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Spherical Roller Bearings
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Spherical Roller Bearings
Product catalog summary
Overview
Timken is a global leader in metallurgy, friction management, and mechanical power transmission, offering a wide range of products and services to enhance productivity across various industries. Their offerings include drive train kits, durable housings, couplings, repair services, and roller chains, supported by a global team of 17,000 employees dedicated to improving customer operations.
Timken is a global leader in metallurgy, friction management, and mechanical power transmission, offering a wide range of products and services to enhance productivity across various industries. Their offerings include drive train kits, durable housings, couplings, repair services, and roller chains, supported by a global team of 17,000 employees dedicated to improving customer operations.
Introduction
Timken's spherical roller bearings are engineered to handle heavier loads and faster speeds, meeting the demands for increased equipment uptime and performance. With over a century of experience, Timken provides custom solutions that enhance equipment efficiency and reduce maintenance costs, supported by technical leadership and engineering support.
Timken's spherical roller bearings are engineered to handle heavier loads and faster speeds, meeting the demands for increased equipment uptime and performance. With over a century of experience, Timken provides custom solutions that enhance equipment efficiency and reduce maintenance costs, supported by technical leadership and engineering support.
Core Capabilities
Timken has evolved from a bearing producer to a supplier of friction management and power transmission solutions. Their material enhancements improve bearing life and protect against debris and corrosion, with precision manufacturing ensuring global consistency and a robust distribution network for easy access worldwide.
Timken has evolved from a bearing producer to a supplier of friction management and power transmission solutions. Their material enhancements improve bearing life and protect against debris and corrosion, with precision manufacturing ensuring global consistency and a robust distribution network for easy access worldwide.
Spherical Roller Bearing Technology
Timken's spherical roller bearings offer increased performance, longer life, and lower operating costs due to optimized internal geometries and improved cage and roller piloting design. Their engineering and manufacturing processes adhere to stringent standards, ensuring consistent quality globally.
Timken's spherical roller bearings offer increased performance, longer life, and lower operating costs due to optimized internal geometries and improved cage and roller piloting design. Their engineering and manufacturing processes adhere to stringent standards, ensuring consistent quality globally.
Performance and Reliability
Timken bearings run cooler than competitors, leading to longer lubricant and bearing life. They have industry-leading load and speed ratings, allowing for higher performance and reliability, with advanced design features contributing to superior performance in demanding applications.
Timken bearings run cooler than competitors, leading to longer lubricant and bearing life. They have industry-leading load and speed ratings, allowing for higher performance and reliability, with advanced design features contributing to superior performance in demanding applications.
Conclusion
Timken's commitment to innovation, quality, and customer support makes it a trusted partner for industries worldwide. Their spherical roller bearings are engineered to deliver exceptional performance, reliability, and cost-effectiveness.
Timken's commitment to innovation, quality, and customer support makes it a trusted partner for industries worldwide. Their spherical roller bearings are engineered to deliver exceptional performance, reliability, and cost-effectiveness.
Products and Services
Timken provides an extensive portfolio of friction-management products and services, adhering to a strict global quality management system. Their bearings, made from high-performance steel, are designed for various applications and industries.
Timken provides an extensive portfolio of friction-management products and services, adhering to a strict global quality management system. Their bearings, made from high-performance steel, are designed for various applications and industries.
Types of Bearings
- Tapered Roller Bearings: Suitable for harsh conditions, handling radial and thrust loads with high power density and long life.
- Cylindrical Roller Bearings: Designed to minimize drag and heat, extending equipment life and reducing maintenance costs.
- Spherical Roller Bearings: Capable of handling misalignment, contamination, and high temperatures, offering high load and speed ratings.
- Thrust Bearings: Optimized for axial loads combined with challenging conditions.
- Ball Bearings: Engineered for a wide range of applications, supporting high-speed operations under various load conditions.
Housed Units
Timken offers a variety of housed units designed to protect bearings in harsh environments, providing benefits like easy maintenance and high protection against contaminants.
Timken offers a variety of housed units designed to protect bearings in harsh environments, providing benefits like easy maintenance and high protection against contaminants.
Lubricants and Lubrication Systems
Timken's lubricants and lubrication systems are essential for maximizing performance and uptime, offering a range of grease formulations and automated lubrication systems.
Timken's lubricants and lubrication systems are essential for maximizing performance and uptime, offering a range of grease formulations and automated lubrication systems.
High-Performance Bearing Solutions
Timken provides specialized bearing solutions, including corrosion-resistant and debris-resistant bearings, with unique surface finishes and coatings to enhance performance.
Timken provides specialized bearing solutions, including corrosion-resistant and debris-resistant bearings, with unique surface finishes and coatings to enhance performance.
Power Transmission Components and Systems
Timken offers components like seals, couplings, and chains designed to withstand extreme conditions and protect machinery.
Timken offers components like seals, couplings, and chains designed to withstand extreme conditions and protect machinery.
Maintenance Tools and Services
Timken provides tools and services to extend bearing life and simplify maintenance, including remanufacturing and repair services.
Timken provides tools and services to extend bearing life and simplify maintenance, including remanufacturing and repair services.
Training
Timken offers training programs for plant professionals, covering all phases of bearing performance with hands-on training and facility tours.
Timken offers training programs for plant professionals, covering all phases of bearing performance with hands-on training and facility tours.
Catalog Usage and Shelf Life Policy
The catalog is designed to help users find suitable bearings, with guidelines on shelf life and storage, emphasizing the importance of proper storage to maintain product integrity.
The catalog is designed to help users find suitable bearings, with guidelines on shelf life and storage, emphasizing the importance of proper storage to maintain product integrity.
Storage Guidelines
Timken recommends keeping products in original packaging until use, avoiding damage to packaging, and adhering to storage guidelines to ensure product longevity.
Timken recommends keeping products in original packaging until use, avoiding damage to packaging, and adhering to storage guidelines to ensure product longevity.
Storage and Handling Guidelines:
- Products should be placed into service promptly after removal from packaging.
- Bulk pack containers should be resealed immediately after removing a product.
- Do not use products beyond their shelf life; consult a Timken sales engineer for shelf life limits.
- Maintain storage temperatures between 0º C (32º F) and 40º C (104º F) with minimal fluctuations.
- Keep relative humidity below 60% and surfaces dry.
- Ensure the storage area is free from contaminants and isolated from vibrations.
- Avoid extreme conditions.
Product Specifications and Recommendations:
- Most bearing components are shipped with a corrosion-preventive compound, which is not a lubricant.
- For oil-lubricated applications, the compound need not be removed, but it should be removed for some specialized grease applications.
Installation and Maintenance:
- Avoid excessive force during mounting or dismounting.
- Follow all tolerance, fit, and torque recommendations.
- Ensure proper alignment and never weld housed units.
- Do not heat components with an open flame or operate at temperatures above 250˚ F (121˚ C).
Compliance and Safety:
- Timken products are subject to various regulatory standards including REACH, RoHS, ATEX, and CE Marking.
- Consult Timken sales engineers for compliance information.
- Proper maintenance and handling are critical to avoid risks of injury or damage.
Engineering and Design:
- Timken offers various spherical roller bearing designs with different cage types for specific applications.
- Optional features include lubrication grooves and oil holes for enhanced lubrication.
- Specific designs are available for vibratory applications with reduced tolerances and specific clearances.
Technical Specifications:
- Metric system tolerances are provided for spherical roller bearings, detailing deviations and runout specifications.
- Tables summarize specifications and classes for spherical roller bearings, including boundary dimension tolerances.
Specifications and Tolerances: The document outlines the standard tolerances for Timken radial spherical roller bearings, adhering to ISO 492 standards. It provides tables listing critical tolerances for outer rings in metric measurements, including outside deviation, width variation, radial runout, and axial runout. The document emphasizes the importance of selecting the appropriate tolerance class (P6 or P5) for applications where running tolerance is critical.
Deviation and Variation: Deviation is defined as the difference between a single ring dimension and the nominal dimension, with the nominal dimension having a +0 mm tolerance. Variation refers to the difference between the largest and smallest measurements of a given parameter for an individual ring.
Mounting and Installation: The document provides guidelines for mounting spherical roller bearings, often in combination with other types of bearings. It describes the typical setup where one bearing is fixed axially and the other allows for movement or float to accommodate environmental conditions. Figures illustrate typical applications, such as gearbox and pulverizer wheel assemblies.
Fitting Practice: Recommended fitting practices are detailed, assuming normal precision bearings, thick steel or cast iron housings, and solid steel shafts. The document advises using interference fits for rotating inner rings to prevent creep and wear. It also discusses fitting practices for stationary inner and outer rings, emphasizing the need for tighter fits in certain conditions.
Tapered Bore Designs: Tapered bore bearings are recommended for simplifying shaft mounting and dismounting. The document explains the use of adapter sleeves and locknuts for securing the inner ring on a tapered shaft. It provides guidelines for approximating clearance loss due to axial drive-up.
Setting and Thermal Gradients: The document highlights the importance of considering fitting practice and thermal gradients when setting bearings. It provides guidelines for selecting the appropriate radial internal clearance (RIC) and discusses the effects of thermal gradients on bearing clearance.
Radial Internal Clearance: Tables list the radial internal clearance limits for spherical roller bearings with both cylindrical and tapered bores. The document explains the significance of different clearance classes (C2, C0, C3, C4, C5) and their impact on bearing performance.
Warnings and Best Practices: The document includes warnings about the risks of improper maintenance and handling, emphasizing the importance of following installation instructions and maintaining proper lubrication. It advises against spinning bearings with compressed air due to the risk of expelling rollers.
Specifications:
The document provides detailed specifications for the inner ring of RIC reduction on tapered shafts. It includes measurements for minimum permissible RIC after installation for various taper ratios (1:12 and 1:30) and different bearing sizes ranging from 20 mm to 1000 mm. The specifications are presented in both metric and imperial units.
The document provides detailed specifications for the inner ring of RIC reduction on tapered shafts. It includes measurements for minimum permissible RIC after installation for various taper ratios (1:12 and 1:30) and different bearing sizes ranging from 20 mm to 1000 mm. The specifications are presented in both metric and imperial units.
Procedures:
The document outlines a step-by-step procedure for mounting, fitting, setting, and installing spherical roller bearings. Key steps include:
The document outlines a step-by-step procedure for mounting, fitting, setting, and installing spherical roller bearings. Key steps include:
- Measuring unmounted radial internal clearance (RIC) using a feeler gauge.
- Confirming RIC values against specifications using provided tables.
- Calculating suggested RIC reduction due to installation.
- Determining maximum and minimum RIC after mounting.
- Evaluating mounted RIC against minimum permissible RIC after installation.
Norms and Recommendations:
The document advises consulting a Timken sales engineer for specific cases involving non-steel shaft materials or thin-walled shafts. It also provides guidance on using tables to determine shaft and housing fits, and calculating resultant fits and RIC reductions.
The document advises consulting a Timken sales engineer for specific cases involving non-steel shaft materials or thin-walled shafts. It also provides guidance on using tables to determine shaft and housing fits, and calculating resultant fits and RIC reductions.
Examples:
Two examples are provided to illustrate the calculation of RIC reduction using spherical roller bearings with tapered and cylindrical bores. These examples include detailed calculations for determining unmounted and mounted RIC, as well as evaluating fit selections.
Two examples are provided to illustrate the calculation of RIC reduction using spherical roller bearings with tapered and cylindrical bores. These examples include detailed calculations for determining unmounted and mounted RIC, as well as evaluating fit selections.
Best Practices:
The document emphasizes the importance of confirming RIC designation selection against operating speeds, particularly for bearings operating at speeds exceeding 70% of the thermal speed rating. It also suggests using the heat expansion method for installing cylindrical bore bearings to achieve a tight interference fit on the shaft.
The document emphasizes the importance of confirming RIC designation selection against operating speeds, particularly for bearings operating at speeds exceeding 70% of the thermal speed rating. It also suggests using the heat expansion method for installing cylindrical bore bearings to achieve a tight interference fit on the shaft.
Heating Methods for Bearing Installation
Two primary methods are used for heating bearings: a tank of heated oil and induction heating. The oil should not exceed 121°C (250°F), with 93°C (200°F) being sufficient for most applications. Induction heating is rapid but should not exceed 93°C (200°F). Bearings should be heated for 20-30 minutes until they expand enough to slide onto the shaft easily. Thermal crayons can be used to check temperatures.
Two primary methods are used for heating bearings: a tank of heated oil and induction heating. The oil should not exceed 121°C (250°F), with 93°C (200°F) being sufficient for most applications. Induction heating is rapid but should not exceed 93°C (200°F). Bearings should be heated for 20-30 minutes until they expand enough to slide onto the shaft easily. Thermal crayons can be used to check temperatures.
Installation Procedures
When using a tight fit inner ring, the assembly method depends on whether the bearing has a cylindrical or tapered bore. Cleanliness is crucial, and the environment should be free from dust and moisture. All components should be cleaned and inspected for dimensional accuracy before installation.
When using a tight fit inner ring, the assembly method depends on whether the bearing has a cylindrical or tapered bore. Cleanliness is crucial, and the environment should be free from dust and moisture. All components should be cleaned and inspected for dimensional accuracy before installation.
Shaft and Housing Finish
Shaft surfaces must be clean and free from nicks and burrs. For stationary housing and rotating shaft applications, a ground finish of 1.6 µm (65 µin.) Ra maximum is recommended. Housing bores should be finished to 3.2 µm (125 µin) Ra maximum.
Shaft surfaces must be clean and free from nicks and burrs. For stationary housing and rotating shaft applications, a ground finish of 1.6 µm (65 µin.) Ra maximum is recommended. Housing bores should be finished to 3.2 µm (125 µin) Ra maximum.
Mounting Techniques
Never apply pressure to the outer ring for a shaft press fit or to the inner ring for a housing press fit. Avoid using steam or hot water for cleaning bearings to prevent rust. Do not heat bearings beyond 149°C (300°F). The arbor press method is suitable for smaller bearings, using a soft steel tube slightly larger than the shaft.
Never apply pressure to the outer ring for a shaft press fit or to the inner ring for a housing press fit. Avoid using steam or hot water for cleaning bearings to prevent rust. Do not heat bearings beyond 149°C (300°F). The arbor press method is suitable for smaller bearings, using a soft steel tube slightly larger than the shaft.
Mounting Tapered Bore Bearings
Use a feeler gauge to measure the reduction in radial internal clearance (RIC) during installation. Lubricate the tapered shaft with machine oil and slide the bearing onto the shaft. Tighten the locknut to achieve the desired interference fit and RIC reduction.
Use a feeler gauge to measure the reduction in radial internal clearance (RIC) during installation. Lubricate the tapered shaft with machine oil and slide the bearing onto the shaft. Tighten the locknut to achieve the desired interference fit and RIC reduction.
Shaft and Housing Fits
Tables provide guidelines for specifying shaft and housing fits based on operating conditions. Different fits are recommended for various load conditions and applications, such as stationary inner ring loads, rotating inner ring loads, and very heavy loads.
Tables provide guidelines for specifying shaft and housing fits based on operating conditions. Different fits are recommended for various load conditions and applications, such as stationary inner ring loads, rotating inner ring loads, and very heavy loads.
Engineering Resources
3D models and 2D drawings are available for download at cad.timken.com.
3D models and 2D drawings are available for download at cad.timken.com.
Specifications:
The document provides detailed specifications for Timken spherical roller bearings, including tolerance ranges, shaft and housing fits, and operating temperature limits. Tolerances are shown as variances from nominal bearing outer diameters, with specific ranges provided for different bearing sizes.
The document provides detailed specifications for Timken spherical roller bearings, including tolerance ranges, shaft and housing fits, and operating temperature limits. Tolerances are shown as variances from nominal bearing outer diameters, with specific ranges provided for different bearing sizes.
Procedures:
Guidelines for specifying shaft and housing fits are outlined, with charts provided for different operating conditions. The document emphasizes the importance of considering temperature effects on bearing performance and equipment design.
Guidelines for specifying shaft and housing fits are outlined, with charts provided for different operating conditions. The document emphasizes the importance of considering temperature effects on bearing performance and equipment design.
Standards:
The document references DIN Standard 623 for bearing stability designations and provides maximum operating temperatures for different stability levels (S0 to S4). It also includes ASTM standards for material specifications.
The document references DIN Standard 623 for bearing stability designations and provides maximum operating temperatures for different stability levels (S0 to S4). It also includes ASTM standards for material specifications.
Recommendations:
Recommendations are given for material selection based on operating temperatures, with tables listing suitable materials, chemical compositions, and hardness levels. The document advises consulting Timken sales engineers for non-standard heat stability or high-temperature steel grades.
Recommendations are given for material selection based on operating temperatures, with tables listing suitable materials, chemical compositions, and hardness levels. The document advises consulting Timken sales engineers for non-standard heat stability or high-temperature steel grades.
Key Data from Tables:
- Tolerance ranges are specified from +0 to listed values.
- Maximum operating temperatures for stability designations range from 150°C (302°F) to 350°C (662°F).
- Material recommendations include low-alloy carbon-chromium steels and corrosion-resistant stainless steels, with specific hardness and dimensional stability data.
- Tolerance ranges are specified from +0 to listed values.
- Maximum operating temperatures for stability designations range from 150°C (302°F) to 350°C (662°F).
- Material recommendations include low-alloy carbon-chromium steels and corrosion-resistant stainless steels, with specific hardness and dimensional stability data.
Critical Information:
- Bearings should not exceed specified temperature limits to maintain performance and dimensional stability.
- Lubrication limitations are discussed, highlighting the impact of temperature on grease performance.
- Equipment designers must consider temperature effects on precision and thermal expansions, with prototype testing recommended to define operating temperature ranges.
- Bearings should not exceed specified temperature limits to maintain performance and dimensional stability.
- Lubrication limitations are discussed, highlighting the impact of temperature on grease performance.
- Equipment designers must consider temperature effects on precision and thermal expansions, with prototype testing recommended to define operating temperature ranges.
Operating Temperatures: The document provides standard operating temperatures for various bearing components, including cages, shields, and seals. These temperatures range from -65°F to 800°F, depending on the material used, such as molded nylon, phenolic resin, and stainless steel.
Heat Generation and Dissipation: Bearing operating temperature is influenced by heat generation from sources like bearings and seals, and the system's ability to dissipate heat. Heat generation is calculated using the product of bearing torque and speed, while heat dissipation involves conduction, convection, and radiation. Circulating oil systems can help manage heat dissipation effectively.
Torque: Running torque in bearings depends on load, speed, lubrication, and internal characteristics. The document provides formulas for calculating running torque, particularly for spherical roller bearings, with coefficients based on bearing series.
Lubrication: Proper lubrication minimizes rolling resistance and sliding friction, transfers heat, and protects against corrosion. The choice between oil and grease depends on the application, with oil preferred for high-speed or high-temperature conditions. Various lubrication methods, such as oil bath and circulating systems, are discussed, highlighting their advantages and suitability for different applications.
Viscosity: Selecting the appropriate oil viscosity involves considering load, speed, and environmental factors. The document compares ISO/ASTM and SAE viscosity classifications, emphasizing the importance of matching viscosity to operating conditions.
Viscosity Grade System for Industrial Oils
ISO Viscosity System
This section outlines the ISO viscosity system for industrial oils, focusing on general-purpose rust and oxidation (R&O) lubricating oils and industrial extreme-pressure (EP) gear oils.
ISO Viscosity System
This section outlines the ISO viscosity system for industrial oils, focusing on general-purpose rust and oxidation (R&O) lubricating oils and industrial extreme-pressure (EP) gear oils.
General-Purpose R&O Lubricating Oil
These oils are commonly used in industrial applications for lubricating Timken bearings. They are made from solvent-refined, high viscosity-index petroleum oil with corrosion and oxidation inhibitors. The viscosity index is a minimum of 80, with a pour point of -10°C (14°F). Viscosity grades range from ISO/ASTM 32 to 220, with higher grades suitable for low-speed/high-temperature applications and lower grades for high-speed/low-temperature applications.
These oils are commonly used in industrial applications for lubricating Timken bearings. They are made from solvent-refined, high viscosity-index petroleum oil with corrosion and oxidation inhibitors. The viscosity index is a minimum of 80, with a pour point of -10°C (14°F). Viscosity grades range from ISO/ASTM 32 to 220, with higher grades suitable for low-speed/high-temperature applications and lower grades for high-speed/low-temperature applications.
Industrial EP Gear Oil
Used for heavily loaded industrial equipment, these oils must withstand abnormal shock loads. They are composed of highly refined petroleum oil with corrosion, oxidation inhibitors, and EP additives. The viscosity index is also a minimum of 80, with a pour point of -10°C (14°F). Viscosity grades range from ISO/ASTM 100 to 460, with higher grades for high-temperature/slow-speed applications and lower grades for low-temperature/high-speed applications.
Used for heavily loaded industrial equipment, these oils must withstand abnormal shock loads. They are composed of highly refined petroleum oil with corrosion, oxidation inhibitors, and EP additives. The viscosity index is also a minimum of 80, with a pour point of -10°C (14°F). Viscosity grades range from ISO/ASTM 100 to 460, with higher grades for high-temperature/slow-speed applications and lower grades for low-temperature/high-speed applications.
Grease Lubrication
Grease lubrication is suitable for low-to-moderate speed applications. Greases consist of a base oil, thickening agent, and additives. Common thickeners include lithium, aluminum, and calcium compounds, each with specific properties like water resistance and temperature stability. Synthetic greases offer advantages in wide temperature ranges, from -73°C (-100°F) to 288°C (550°F).
Grease lubrication is suitable for low-to-moderate speed applications. Greases consist of a base oil, thickening agent, and additives. Common thickeners include lithium, aluminum, and calcium compounds, each with specific properties like water resistance and temperature stability. Synthetic greases offer advantages in wide temperature ranges, from -73°C (-100°F) to 288°C (550°F).
Contamination and Grease Selection
Contamination from abrasive particles and water can significantly reduce bearing life. Greases like calcium and aluminum-complex are highly water-resistant. Grease selection should consider consistency, temperature stability, and resistance to chemical reactions. Timken offers a range of application-specific greases for various industrial needs.
Contamination from abrasive particles and water can significantly reduce bearing life. Greases like calcium and aluminum-complex are highly water-resistant. Grease selection should consider consistency, temperature stability, and resistance to chemical reactions. Timken offers a range of application-specific greases for various industrial needs.
Grease Use Guidelines
Proper grease application is crucial, with the bearing cavity typically kept one-third to one-half full to avoid excessive heat generation. Relubrication should occur at regular intervals to maintain bearing performance.
Proper grease application is crucial, with the bearing cavity typically kept one-third to one-half full to avoid excessive heat generation. Relubrication should occur at regular intervals to maintain bearing performance.
Specifications and Recommendations:
Timken provides a range of lubricants designed for industrial operations, including high-temperature, anti-wear, and water-resistant additives. Grease is preferred over oil for ease of use in bearing lubrication, requiring periodic relubrication. Proper grease application involves packing it between rolling elements, with specific methods for tapered roller bearings.
Timken provides a range of lubricants designed for industrial operations, including high-temperature, anti-wear, and water-resistant additives. Grease is preferred over oil for ease of use in bearing lubrication, requiring periodic relubrication. Proper grease application involves packing it between rolling elements, with specific methods for tapered roller bearings.
Grease Application Methods:
Grease can be applied by hand or using a mechanical grease packer. The relubrication cycle depends on operating temperature and sealing efficiency. High temperatures and inefficient seals necessitate more frequent regreasing. Grease should be replaced when contaminated or degraded.
Grease can be applied by hand or using a mechanical grease packer. The relubrication cycle depends on operating temperature and sealing efficiency. High temperatures and inefficient seals necessitate more frequent regreasing. Grease should be replaced when contaminated or degraded.
Grease Consistency and Compatibility:
Grease consistency varies and is measured by penetration number. The NLGI classification provides a standard for grease grades. Compatibility between different grease types is crucial to avoid improper lubrication.
Grease consistency varies and is measured by penetration number. The NLGI classification provides a standard for grease grades. Compatibility between different grease types is crucial to avoid improper lubrication.
Grease Lubrication for Bearing/Housing Assemblies:
Polyurea and lithium-based greases are recommended for general-purpose lubrication, especially in moist environments. Grease selection should consider consistency, operating temperature, and the presence of extreme pressure additives for heavy loads.
Polyurea and lithium-based greases are recommended for general-purpose lubrication, especially in moist environments. Grease selection should consider consistency, operating temperature, and the presence of extreme pressure additives for heavy loads.
Multi-Purpose Industrial Grease:
Lithium, lithium complex, and calcium sulfonate greases are suitable for various applications. They should be smooth, homogeneous, and free from corrosive materials. The viscosity of the base oil should match the application speed and load.
Lithium, lithium complex, and calcium sulfonate greases are suitable for various applications. They should be smooth, homogeneous, and free from corrosive materials. The viscosity of the base oil should match the application speed and load.
Application Considerations:
For high-speed applications, lighter base oil viscosity is recommended, while heavier viscosity is suitable for low-speed applications. Grease fill should be adjusted based on application speed and housing void.
For high-speed applications, lighter base oil viscosity is recommended, while heavier viscosity is suitable for low-speed applications. Grease fill should be adjusted based on application speed and housing void.
Thermal Reference Speed and Limiting Speed:
Thermal Reference Speed is based on ISO 15312 standards, balancing heat generation and conduction. Limiting Speed considers cage behavior and material wear. Both speeds require specific conditions and may need consultation with a Timken engineer for applications exceeding catalog values.
Thermal Reference Speed is based on ISO 15312 standards, balancing heat generation and conduction. Limiting Speed considers cage behavior and material wear. Both speeds require specific conditions and may need consultation with a Timken engineer for applications exceeding catalog values.
Spherical Roller Bearings:
Timken's spherical roller bearings are designed for high radial loads and consistent performance under challenging conditions. They feature superior design and technical support, with specific nomenclature and modification codes for various applications.
Timken's spherical roller bearings are designed for high radial loads and consistent performance under challenging conditions. They feature superior design and technical support, with specific nomenclature and modification codes for various applications.
Introduction
Timken provides high-performance plummer block housings designed for heavy-duty applications. These housings are engineered for easy assembly and disassembly, featuring split construction and alignment aids. They are suitable for shaft sizes ranging from 20 to 400 mm and are used in various industrial applications such as conveyors and rolling mills.
Timken provides high-performance plummer block housings designed for heavy-duty applications. These housings are engineered for easy assembly and disassembly, featuring split construction and alignment aids. They are suitable for shaft sizes ranging from 20 to 400 mm and are used in various industrial applications such as conveyors and rolling mills.
Design and Construction
Timken's plummer block housings are available for both tapered and cylindrical bore bearings. They are constructed from high-grade cast iron, with options for steel and ductile iron. The housings are precision-fitted with dowel pins to ensure a precise fit and are not interchangeable as separate parts.
Timken's plummer block housings are available for both tapered and cylindrical bore bearings. They are constructed from high-grade cast iron, with options for steel and ductile iron. The housings are precision-fitted with dowel pins to ensure a precise fit and are not interchangeable as separate parts.
Mounting Options
Plummer blocks can be mounted using either tapered adapter sleeves or directly on shouldered shafts. The adapter mount allows for flexibility in axial positioning and accommodates light thrust loads. For heavy thrust loads, a direct straight bore mounting is recommended.
Plummer blocks can be mounted using either tapered adapter sleeves or directly on shouldered shafts. The adapter mount allows for flexibility in axial positioning and accommodates light thrust loads. For heavy thrust loads, a direct straight bore mounting is recommended.
Seal Options
Timken offers various sealing options to protect bearings, including double-lip, V-ring, labyrinth, and taconite seals. Each seal type is designed to meet specific application needs, with considerations for temperature, speed, and contamination resistance.
Timken offers various sealing options to protect bearings, including double-lip, V-ring, labyrinth, and taconite seals. Each seal type is designed to meet specific application needs, with considerations for temperature, speed, and contamination resistance.
Lubrication
The housings are designed for grease lubrication but can be modified for oil systems. Bearings with lubrication grooves should have fresh lubricant fed directly to the center to ensure proper distribution.
The housings are designed for grease lubrication but can be modified for oil systems. Bearings with lubrication grooves should have fresh lubricant fed directly to the center to ensure proper distribution.
Installation Guidelines
Proper installation is crucial for optimal performance. The process involves cleaning the work area, checking shaft specifications, aligning the housing, and ensuring correct seal installation. Detailed steps are provided for mounting housings with double-lip seals.
Proper installation is crucial for optimal performance. The process involves cleaning the work area, checking shaft specifications, aligning the housing, and ensuring correct seal installation. Detailed steps are provided for mounting housings with double-lip seals.
Load Ratings and Life
Load ratings for spherical roller bearings are provided, and the ability of the plummer block to carry the load should be considered. For non-standard conditions, consultation with a Timken sales engineer is recommended.
Load ratings for spherical roller bearings are provided, and the ability of the plummer block to carry the load should be considered. For non-standard conditions, consultation with a Timken sales engineer is recommended.
Installation Guides for SNT Spherical Roller Bearing Plummer Blocks
1. General Preparation:
Ensure the work area is clean and the shaft seat is dimensionally accurate. The shaft should be free from imperfections, and the surface roughness of the support surface should not exceed Ra ≤ 12.5 μm. Ensure flatness within specified limits.
1. General Preparation:
Ensure the work area is clean and the shaft seat is dimensionally accurate. The shaft should be free from imperfections, and the surface roughness of the support surface should not exceed Ra ≤ 12.5 μm. Ensure flatness within specified limits.
2. Mounting Housings with Labyrinth Seals:
- Position the housing on the support surface and fit attachment bolts without tightening.
- Mount the labyrinth ring and bearing on the shaft, filling the bearing with grease.
- Install the shaft with bearing and labyrinth rings in the housing base.
- Align the housing base using vertical markings and tighten the attachment bolts.
- Install the cap onto the base and tighten the cap bolts to the specified torque.
- Insert the hollow O-ring cord in the grooves of the labyrinth rings.
- Position the housing on the support surface and fit attachment bolts without tightening.
- Mount the labyrinth ring and bearing on the shaft, filling the bearing with grease.
- Install the shaft with bearing and labyrinth rings in the housing base.
- Align the housing base using vertical markings and tighten the attachment bolts.
- Install the cap onto the base and tighten the cap bolts to the specified torque.
- Insert the hollow O-ring cord in the grooves of the labyrinth rings.
3. Mounting Housings with V-Ring Seals:
- Position the housing and fit attachment bolts without tightening.
- Arrange the V-ring with sealing washer on the shaft.
- Mount the bearing and fill it with grease.
- Install the shaft with bearing and sealing washers in the housing base.
- Align the housing base and tighten the attachment bolts.
- Install the cap onto the base and tighten the cap bolts.
- Coat the V-ring counterfaces with grease and push the V-ring seals into position.
- Position the housing and fit attachment bolts without tightening.
- Arrange the V-ring with sealing washer on the shaft.
- Mount the bearing and fill it with grease.
- Install the shaft with bearing and sealing washers in the housing base.
- Align the housing base and tighten the attachment bolts.
- Install the cap onto the base and tighten the cap bolts.
- Coat the V-ring counterfaces with grease and push the V-ring seals into position.
4. Mounting Housings with Taconite Seals:
- Position the housing and fit attachment bolts without tightening.
- Mount the first V-ring and labyrinth ring on the shaft.
- Mount the bearing and fill it with grease.
- Install the shaft with bearing and seals in the housing base.
- Align the housing base and tighten the attachment bolts.
- Install the cap onto the base and tighten the cap bolts.
- Rotate the shaft and supply grease until it purges from the labyrinth rings.
- Position the housing and fit attachment bolts without tightening.
- Mount the first V-ring and labyrinth ring on the shaft.
- Mount the bearing and fill it with grease.
- Install the shaft with bearing and seals in the housing base.
- Align the housing base and tighten the attachment bolts.
- Install the cap onto the base and tighten the cap bolts.
- Rotate the shaft and supply grease until it purges from the labyrinth rings.
5. Safety Warnings:
- Proper maintenance and handling are critical to avoid risks of injury or equipment damage.
- Overheated bearings can ignite explosive atmospheres; special care is needed in such environments.
- Do not use damaged housed units.
- Proper maintenance and handling are critical to avoid risks of injury or equipment damage.
- Overheated bearings can ignite explosive atmospheres; special care is needed in such environments.
- Do not use damaged housed units.
6. Grease Fill Recommendations:
- For normal applications, fill the bearing void to 100% and housing void to 40-60%.
- For low-speed applications, fill the housing void to 60-100%.
- For high-speed applications, fill the housing void to 30-40%.
- For normal applications, fill the bearing void to 100% and housing void to 40-60%.
- For low-speed applications, fill the housing void to 60-100%.
- For high-speed applications, fill the housing void to 30-40%.
7. Torque Specifications:
- Detailed torque specifications for cap and attachment bolts are provided in the table.
- Detailed torque specifications for cap and attachment bolts are provided in the table.
8. Ordering Information:
- Basic numbers for ordering plummer block housings and components are listed, including options for cast iron, cast steel, and ductile iron housings.
- Basic numbers for ordering plummer block housings and components are listed, including options for cast iron, cast steel, and ductile iron housings.
Overview: The document provides detailed specifications and ordering information for SNT and FSNT housings used with tapered bore bearings. It includes guidelines for selecting materials, components, and dimensions for various shaft diameters.
Specifications:
- Housings are available in cast iron, with options for cast steel (prefix 'S') or ductile iron (prefix 'D').
- Each housing includes a cap, base, and cap bolts.
- Locating rings, adapter sleeve assemblies, and seals are specified for each housing type.
Components:
- Locating Rings: Minimum two required for fixed position, sold individually.
- Adapter Sleeve Assembly: Includes sleeve, locknut, and lockwasher.
- Seals: Labyrinth, taconite, double-lip, and V-ring seals are available, with specific packaging details.
Housing Dimensions:
- Dimensions and mass are provided for both two-bolt and four-bolt housings, with detailed measurements for each component.
- Tables list dimensions such as A, A1, A2, A3, H, H1, H2, J, J1, J2, L, N, N1, and G in millimeters, along with housing mass in kilograms.
Ordering Information:
- Basic numbers for ordering plummer block housings and components are listed in tables.
- Specific part numbers are provided for different shaft diameters and housing types.
Additional Resources:
- 3D models and 2D drawings are available for download at cad.timken.com.
Introduction
Timken provides engineering and manufacturing capabilities for heavy-duty pillow blocks, offering benefits such as expert consultation for applications involving large shaft sizes. The catalog covers sizes from 1.37795 to 11.811 inches (35-300 mm) and special sizes up to 1000 mm. Applications include conveyors, mining, and heavy structures. Features include split construction for easy assembly and disassembly, with benefits like quick cap removal without damage.
Timken provides engineering and manufacturing capabilities for heavy-duty pillow blocks, offering benefits such as expert consultation for applications involving large shaft sizes. The catalog covers sizes from 1.37795 to 11.811 inches (35-300 mm) and special sizes up to 1000 mm. Applications include conveyors, mining, and heavy structures. Features include split construction for easy assembly and disassembly, with benefits like quick cap removal without damage.
Design and Construction
Timken's pillow blocks are available with tapered or cylindrical bore bearings. The split construction allows for easy maintenance, and the units are doweled for precise fit. Standard materials include high-grade cast iron, with options for cast steel. Most blocks use four-bolt mounting to ensure stability and prevent lubricant loss.
Timken's pillow blocks are available with tapered or cylindrical bore bearings. The split construction allows for easy maintenance, and the units are doweled for precise fit. Standard materials include high-grade cast iron, with options for cast steel. Most blocks use four-bolt mounting to ensure stability and prevent lubricant loss.
Mounting
Spherical roller bearing pillow blocks can be mounted on straight shafts using tapered bore bearings and adapters, allowing flexibility in axial positioning. For heavy thrust loads or precise axial location, direct straight bore mounting is recommended. Fixed and float positions are available, with stabilizing rings used for fixed positions.
Spherical roller bearing pillow blocks can be mounted on straight shafts using tapered bore bearings and adapters, allowing flexibility in axial positioning. For heavy thrust loads or precise axial location, direct straight bore mounting is recommended. Fixed and float positions are available, with stabilizing rings used for fixed positions.
Lubrication and Seals
Pillow blocks are designed for grease and oil-bath lubrication, with options for circulating oil systems. Triple-ring labyrinth seals help retain lubricants and exclude contaminants. For harsh environments, DUSTAC® seals offer additional protection.
Pillow blocks are designed for grease and oil-bath lubrication, with options for circulating oil systems. Triple-ring labyrinth seals help retain lubricants and exclude contaminants. For harsh environments, DUSTAC® seals offer additional protection.
Load Ratings and Life
Load ratings are provided in the catalog, with life calculation formulas available in the Engineering Manual. Proper mounting procedures are crucial to avoid excessive heating and reduced performance.
Load ratings are provided in the catalog, with life calculation formulas available in the Engineering Manual. Proper mounting procedures are crucial to avoid excessive heating and reduced performance.
Inch Tapered Bore Mounting
The catalog provides detailed specifications for SAF225 and SAF226 series, including assembly components and options for fixed or float units. Assemblies are typically cast iron, with options for cast steel or ductile iron. Four-bolt bases are standard unless noted otherwise.
The catalog provides detailed specifications for SAF225 and SAF226 series, including assembly components and options for fixed or float units. Assemblies are typically cast iron, with options for cast steel or ductile iron. Four-bolt bases are standard unless noted otherwise.
Overview: This document is a technical specification from the Timken Spherical Roller Bearing Catalog, focusing on the Inch Tapered Bore Mounting for the SDAF225, SDAF226, SAF230K, and SDAF230K series. It provides detailed information on the assembly components, dimensions, and ordering instructions for pillow block assemblies.
Specifications: The document lists various components required for assembling spherical roller bearing pillow blocks, including base bolts, bearing numbers, adapter assembly numbers, housing options, stabilizing rings, and triple seals. Each assembly includes a housing cap and base, cap bolts, bearing, bearing adapter, locknut, lockwasher, stabilizing ring, and triple-ring seals.
Dimensions and Weights: Detailed tables provide dimensions for each series, including diameter, length, and weight specifications. The tables also specify the required number of components for each assembly.
Ordering Instructions: For non-standard pillow block assemblies, the shaft size must be specified. The document also provides instructions for ordering float units by adding the suffix 'Float' or 'FL' to the part number. Assemblies are available in cast iron, with options for cast steel or ductile iron by adding specific letters to the prefix.
Recommendations: The document advises using two stabilizing rings for fixed applications and not using them for float mounting. It also highlights the importance of specifying shaft size for applications SAF23048 and larger.
Additional Resources: The document references the availability of 3D models and 2D drawings for download at cad.timken.com.
Overview: This document is a technical catalog from Timken, detailing specifications and installation procedures for spherical roller bearing pillow blocks and related accessories. It includes information on shaft seals, adapter sleeves, and withdrawal sleeves, along with installation instructions and ordering guidelines.
Specifications: The catalog provides detailed specifications for various bearing numbers, adapter assemblies, stabilizing rings, and triple seals. It includes a table listing the approximate weights of different bearing configurations. The document also outlines the dimensions and assembly standout for DUSTAC shaft seals, which are recommended for use in contaminated environments.
Procedures: Installation procedures for the DUSTAC shaft seal are provided, emphasizing the importance of checking shaft diameters, expanding the V-ring seal, and ensuring proper alignment and compression of the seal. The document also details the steps for mounting bearings and adjusting for internal clearance.
Standards and Recommendations: The catalog highlights the importance of using Timken accessories, which are manufactured to the same quality standards as their bearings. It recommends using DUSTAC shaft seals for environments with high contamination and provides guidelines for ordering pillow block housings with specific seal configurations.
Accessories: The document lists various accessories for spherical roller bearings, including adapter sleeves, locknuts, lockwashers, and lockplates. It provides nomenclature and part descriptions for these accessories, ensuring compatibility with both metric and inch shaft sizes.
Key Data from Tables: The tables in the document provide critical data on bearing numbers, adapter assemblies, and seal configurations. They also include information on the sizes and types of adapter sleeves and withdrawal sleeves available, along with their corresponding locknuts and locking devices.
Conclusion: This catalog serves as a comprehensive guide for selecting and installing Timken spherical roller bearing pillow blocks and accessories. It emphasizes the importance of using high-quality components to ensure the longevity and reliability of bearing installations.
Overview: The document provides detailed information on tapered-bore antifriction bearings, their mounting methods, and measurement techniques for tapered shafts. It also includes specifications for sine bar gages and a comprehensive index of spherical roller bearing accessories.
Specifications:
- Tapered-bore bearings can be mounted on adapter sleeves or directly on tapered shaft seats. Proper fit is crucial to avoid issues like turning of the bearing inner race, uneven loading, severe inner race hoop stress, and insufficient support.
- Accurate shaft taper measurement is essential, with ring gages and sine bar gages being the two accepted methods.
- Sine bar gages are preferred for their precision and ease of use, especially for large shafts.
Measurement Tools:
- Sine bar gages are available in various sizes for 1:12 and 1:30 shaft tapers, including 3 inch to 14 inch for 1:12 tapers and 4 inch to 12 inch for 1:30 tapers.
- Each set includes sine bar gages, a sine bar saddle, a web clamp, and optionally, a wooden box.
- Consultation with a Timken sales engineer is recommended for specific needs and availability.
Tables and Data:
- The document includes a table listing sine bar sizes and their corresponding bearing part numbers, indicating compatibility with various tapered bore bearings.
- An extensive index of metric and inch accessories for spherical roller bearings is provided, detailing adapter sleeves, withdrawal sleeves, and hydraulic nuts for different bearing bores.
Recommendations:
- Ensure precise manufacturing and maintenance of shaft tapers to prevent premature bearing wear.
- Use sine bar gages for accurate measurement of shaft size and taper.
- For additional sizes and specific requirements, contact a Timken sales engineer.
Overview: This document is a technical catalog from Timken, focusing on spherical roller bearing accessories, specifically metric and inch adapter sleeves, hydraulic adapter sleeves, and withdrawal sleeves. It provides detailed specifications for each type of sleeve, including dimensions, thread types, and associated components.
Metric HA Adapter Sleeves for Inch Shaft: These sleeves are designed for effective tapered bore bearing assembly and include a mounting sleeve, locknut, and lockwasher or lockplate. The document lists various part numbers with their respective dimensions and weights. It also specifies the appropriate hydraulic nuts for each sleeve.
Metric OH Hydraulic Adapter Sleeves: These sleeves facilitate the mounting of large bearings with hydraulic assistance, requiring an oil pump to inject pressurized oil. The document provides a comprehensive list of part numbers, dimensions, and weights, along with the necessary locknuts and lockwashers or lockplates.
Metric AH Withdrawal Sleeves: These sleeves are used for the dismounting of tapered bore bearings from shafts. The document includes specifications such as part numbers, dimensions, and weights, along with the appropriate withdrawal and hydraulic nuts.
Key Specifications: The document includes detailed tables with measurements in millimeters and inches, thread types (metric and trapezoid), and weights in kilograms. It also highlights the importance of consulting a Timken sales engineer for additional dimensions not listed.
Recommendations: For precise applications, users are advised to download 3D models and 2D drawings from the Timken CAD website. Additionally, for any dimensions not covered in the catalog, consultation with a Timken sales engineer is recommended.
Overview: This document is a technical catalog from Timken, detailing specifications for spherical roller bearing accessories, specifically focusing on metric and inch withdrawal sleeves. These components are crucial for the effective dismounting of tapered bore bearings from shafts.
Specifications: The document provides detailed specifications for various withdrawal sleeves, including dimensions such as diameter (d1), length (L, L1), thread type, and weight. It also lists the appropriate withdrawal and hydraulic nut numbers for each sleeve.
Procedures: The document notes that the dimension L1 decreases as the withdrawal sleeve is driven in during mounting. It emphasizes the importance of consulting a Timken sales engineer for additional dimensions that may be available.
Standards and Recommendations: The sleeves are designed for effective dismounting, with hydraulic assistance recommended for larger bearings. The document specifies the use of oil pumps to inject pressurized oil for hydraulic sleeves.
Key Data from Tables: The tables list withdrawal sleeve part numbers alongside their dimensions and weights. They also specify the thread type, which is either metric (M) or trapezoid (Tr), with the latter indicating a 30° trapezoid thread.
Critical Information: The document highlights the importance of using the correct withdrawal and hydraulic nuts for each sleeve type to ensure proper dismounting. It also suggests downloading 3D models and 2D drawings from the Timken website for further reference.
Overview: This document is a technical catalog from Timken, detailing specifications for spherical roller bearing accessories, including metric locknuts, lockwashers, lockplates, and pull-type sleeves. The catalog provides comprehensive data on dimensions, weights, and compatibility for various components used in mounting tapered bore bearings on shafts.
Metric Locknuts: The catalog lists metric locknuts (KM and KML series) with specifications such as thread size, dimensions (D1, D3, D4, Bn, s, T, D6), and weight. These locknuts are available in both standard and 304 stainless steel options. The thread designation indicates the major diameter and pitch of the thread.
Metric Lockwashers: Lockwashers (MB and MBL series) are detailed with dimensions including thread size, inner and outer diameters (D1, D4, D5), thickness (t), and weight per 100 pieces. The number of tangs and compatibility with locknuts are also specified. These are also available in 304 stainless steel.
Metric Lockplates: Lockplates (MS series) are described with dimensions such as thickness (t1), width (S), and length (L2, L3), along with their appropriate locknut compatibility and weight per 100 pieces.
Inch Accessories - Pull-Type Sleeves: The document includes specifications for SNW/SNP pull-type sleeve assemblies, which consist of a sleeve, locknut, and either a lockwasher or lockplate. The table provides dimensions for adapter assemblies and components, including shaft diameter, tolerance, and adapter dimensions.
Key Data Extraction: The tables provide critical data for selecting the appropriate components based on size, weight, and material requirements. The document emphasizes the availability of 3D models and 2D drawings for these components, accessible via the Timken website.
Specifications:
The document provides detailed specifications for various components related to spherical roller bearings and hydraulic nuts. It includes measurements in both metric and inch units, covering dimensions such as diameter, length, and thread specifications.
The document provides detailed specifications for various components related to spherical roller bearings and hydraulic nuts. It includes measurements in both metric and inch units, covering dimensions such as diameter, length, and thread specifications.
Procedures:
Instructions are provided for selecting appropriate shaft limits and dimensions for specific applications. The document references additional tables for further guidance on shaft limits.
Instructions are provided for selecting appropriate shaft limits and dimensions for specific applications. The document references additional tables for further guidance on shaft limits.
Standards and Norms:
The document adheres to American National Threads Class 3 for certain components and Acme General Purpose Threads Class 3G for others. Tolerances for specific dimensions are also specified.
The document adheres to American National Threads Class 3 for certain components and Acme General Purpose Threads Class 3G for others. Tolerances for specific dimensions are also specified.
Recommendations:
Recommendations include consulting additional tables for shaft limits and ensuring compatibility with specified thread classes.
Recommendations include consulting additional tables for shaft limits and ensuring compatibility with specified thread classes.
Data Summary:
The document includes tables listing part numbers, dimensions, piston lengths, areas, and weights for HMVC hydraulic nuts. Key data points include major diameter, thread count, and assembly weight.
The document includes tables listing part numbers, dimensions, piston lengths, areas, and weights for HMVC hydraulic nuts. Key data points include major diameter, thread count, and assembly weight.
Additional Information:
The document is part of the Timken Spherical Roller Bearing Catalog, which offers downloadable 3D models and 2D drawings. It highlights Timken's expertise in improving machinery reliability and performance across various markets.
The document is part of the Timken Spherical Roller Bearing Catalog, which offers downloadable 3D models and 2D drawings. It highlights Timken's expertise in improving machinery reliability and performance across various markets.
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Catalog excerpts
Timken Spherical Roller Bearing Catalog
Open the catalog to page 1
SPHERICAL ROLLER BEARING METRIC ACCESSORIES NOTES TIMKEN SPHERICAL ROLLER BEARING CATALOG
Open the catalog to page 2
TIMKEN OVERVIEW SPHERICAL ROLLER BEARING CATALOG INDEX TIMKEN OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SHELF LIFE POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 ENGINEERING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Bearing Types and Cages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Metric System Tolerances . . . . . . . ....
Open the catalog to page 3
TIMKEN OVERVIEW GROW STRONGER WITH TIMKEN Every day, people around the world count on the strength of Timken. Our expertise in metallurgy, friction management and mechanical power transmission helps them accelerate improvements in productivity and uptime. We supply products and services that can help keep your operations moving forward, whether you need drive train kits for commercial vehicles, durable housings for bearings in dirty environments, couplings that avoid metal-to-metal contact between motors and gearboxes, repair services for bearings and gearboxes, roller chain for dry, abrasive...
Open the catalog to page 4
TIMKEN OVERVIEW INCREASE YOUR EQUIPMENT UPTIME In addition to high-quality bearings and mechanical power transmission components, we provide valuable integrated products and services. For example, we offer repair services, on-site technical support and industrial services for inspecting, repairing and upgrading gearboxes, electric motors and controls. Additionally, we offer a broad selection of seals, premium lubricants, lubricators, couplings and chain to keep your operations moving smoothly. Our 12 technology centers in the United States, Europe and Asia help pioneer tomorrow’s innovations...
Open the catalog to page 5
SPHERICAL ROLLER BEARING INTRODUCTION INDUSTRIAL INNOVATOR Today, manufacturing and s support at their plants, and processing equipment handle o options for additional support from heavier loads, faster speeds and app application engineers who specialize e. greater expectations than ever before. var in a variety of industrial applications. ents As finished-product quality requirements increase, producers continue to place a very high CORE CAPABILITIES premium on equipment uptime and performance. Timken has evolved from its early roots as a bearing Timken has more than a century of experience developing...
Open the catalog to page 6
SPHERICAL ROLLER BEARING INTRODUCTION INCREASED PERFORMANCE AND UPTIME LONGER BEARING LIFE LOWER OPERATING COSTS TIMKEN. LEADING SPHERICAL ROLLER BEARING TECHNOLOGY, PERFORMANCE Timken has set the standard for spherical roller bearing technology – resulting in bearings that offer increased performance and uptime, longer life and lower operating costs. Industry best design practices led to the development of optimized internal geometries and surface finishes, and improved cage and roller piloting design – resulting in bearings that run cooler, faster, and longer than the competition. With a significant...
Open the catalog to page 7
SPHERICAL ROLLER BEARING INTRODUCTION ADVANCED BEARING AND CAGE DESIGN Type EJ Bearing Design Increased Performance Stronger Results Above pitch cage design increases cage stiffness. Reduces stress under shock loading or high acceleration conditions. Cage pocket guides roller.* Eliminates the need for a center guide ring – reducing friction and lowering bearing operating temperatures. Hardened cage on all sizes.* Provides wear resistance and fatigue strength at higher levels. Face slots in cage.* Provides better oil lubricant flow and contaminant purging, and reduces weight. Better able to handle...
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SPHERICAL ROLLER BEARING INTRODUCTION BROADEST RANGE IN THE INDUSTRY, 25MM BORE TO 1250MM BORE Timken offers the broadest range of sizes in both steel cage and brass cage designs for spherical roller bearings. Bore (mm) Cage ▶ Brass Steel Brass Steel Brass Steel Brass Steel Brass Steel Brass Steel Brass Steel Brass Steel Brass Steel Brass Steel Brass Steel Download 3D Models and 2D Drawings at cad.timken.com. • TIMKEN SPHERICAL ROLLER BEARING CATALOG
Open the catalog to page 9
SPHERICAL ROLLER BEARING INTRODUCTION PRODUCTS AND SERVICES We offer equipment builders and operators one of the most extensive friction-management product and service portfolios in the industry. We also strictly adhere to the Timken Quality Management System in every plant worldwide, so each bearing product meets the same high quality standards – no matter where in the world it is manufactured. BEARINGS Putting advanced ideas in motion for more than a century has led to our best-in-class collection of bearings designed for every purpose, every application and every industry. If it moves, chances...
Open the catalog to page 10
SPHERICAL ROLLER BEARING INTRODUCTION BALL BEARINGS From electric motors to agricultural implements to food processing equipment, Timken ball bearings are engineered to perform in a wide range of applications and conditions. Radial ball bearings tolerate relatively high-speed operation under various load conditions Angular contact ball bearing designs include contact angles that support both radial and axial loads HOUSED UNITS SNT/SAF PLUMMER (PILLOW) BLOCK HOUSED UNITS Customizable design, interchangeable components and reliable spherical roller bearings deliver the heavy-duty performance that...
Open the catalog to page 11
SPHERICAL ROLLER BEARING INTRODUCTION HIGH-PERFORMANCE BEARING SOLUTIONS Timken provides a variety of high-performance bearing solutions, including Timken® AquaSpexx®, DuraSpexx® and thin dense chrome bearings for corrosion protection. Our debrisresistant bearings are ideal for contaminated and/or marginal lubrication conditions. We also provide customized bearing solutions such as special race profiles to meet special application requirements. In addition to component geometry and metallurgy, we find many ways to enhance bearing performance by applying unique surface finishes and special coatings...
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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.