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TIMKEN Europe
Timken Ball Bearings

Timken Ball Bearings

Product catalog summary

Overview: The document is a technical catalog from Timken, detailing various types of ball bearings, including radial and angular contact bearings. It provides specifications, applications, and features of different bearing series.

Specifications: The catalog covers a range of bearings with bore sizes from 3 mm to 600 mm, suitable for industries such as aircraft, construction, agriculture, and machine tools. It includes details on special coatings for corrosion resistance and seal designs.

Radial and Angular Contact Bearings: Timken offers a variety of radial and angular contact ball bearings, including single-row and double-row designs. These bearings are designed for high-speed operations and heavy thrust loads, with options for duplex arrangements to enhance axial and radial rigidity.

Series Details: The document outlines several series of bearings:

Extra Small Series: Suitable for small shafts and applications like fractional horsepower motors and precision instruments.
Extra Light 9300 and 9100 Series: Ideal for restricted housing diameters, available with shields and seals.
Light 200 Series: Offers a balance between bore, diameter, and width for light to medium loads.
Medium 300 Series: Designed for heavy-duty applications with greater radial and thrust capacity.
XLS and Extra Large 100 Series: Features extra large diameters and compact cross sections.

Special Features: The catalog includes bearings with Tri-Ply Seals for severe contamination environments, Hex Bore Bearings for ease of mounting, and R-Seal Bearings for agricultural machinery.

Suffixes and Prefixes: The document explains various suffixes and prefixes used to denote specific features like full ball complement, angular contact, and different seal types.

Applications: Bearings are used in a wide range of applications, including machine tools, textile machinery, jet engine gearboxes, and farm machinery.

Specifications: The catalog provides detailed specifications for different bearing models, including bore diameter, outside diameter, width, fillet radius, weight, static load rating, and dynamic load rating. These specifications are crucial for selecting the appropriate bearing for specific applications.

Types of Bearings: The document categorizes bearings into open, shielded, and sealed types, each with specific applications and benefits. Shielded and sealed bearings offer protection against contaminants and retain lubrication, making them suitable for environments where cleanliness and maintenance are concerns.

Materials and Quality: Bearings are available in standard bearing-quality steel and stainless steel, with the latter being denoted by a prefix 'A' before the bearing number. Stainless steel bearings are ideal for applications requiring corrosion resistance.

Seal and Shield Combinations: Various combinations of seals and shields are offered, such as one or two shields, one seal and one shield, or two seals. These combinations provide flexibility in balancing protection and performance needs.

Applications: Bearings are designed for use in electric motors, precision instruments, domestic appliances, and other devices where quiet operation and reliability are essential. The catalog highlights the suitability of bearings for small shafts and fractional horsepower motors.

Additional Features: The document mentions special features like felt seals and Mechani-Seals, which enhance the bearing's ability to retain grease and exclude foreign matter, thus extending the bearing's operational life.

Dimensional Tolerances: Detailed tolerance information is provided for each bearing type, ensuring precise fit and function in various mechanical assemblies.

Load Ratings: Static and dynamic load ratings are specified, indicating the bearing's capacity to withstand loads during operation and at rest, respectively. These ratings are based on calculated fatigue life, ensuring reliability over extended use.

Timken Products Overview

1. Flangette Units
These are pressed steel housed units designed for light-duty applications, available in shaft sizes from 6.35 mm to 12.7 mm. They simplify mounting on side plate or frame-type housings and offer self-alignment features. The units are available with sealed or shielded construction and have a radial load capacity of 25% of the basic bearing’s dynamic load rating at 33.3 RPM.

2. Rubber Tire Flange Housed Units (RTF)
These units use a synthetic, conductive elastomer to facilitate mounting of standard cylindrical O.D. bearings. They offer flexibility in adjusting to minor shaft and housing alignment and help reduce noise and vibration. The radial and thrust ratings are 10% of the basic bearing’s dynamic load rating at 33.3 RPM.

3. Special Bearings
These include pulley, guide roller, and pinch roll bearings, available in various bore sizes. They are lightweight with low inertia and torque, featuring outer ring assemblies with integral molded tires. Materials include aluminum, steel, and engineered plastics.

4. Ultra Light and Extra Light Series
The Ultra Light 9300K Series is designed for restricted housing diameters while maintaining large shaft diameters, used in machine tools and jet engine gearboxes. The Extra Light 9100K Series is suitable for applications requiring quiet operation, such as electric motors.

5. Dimensions and Tolerances
The catalog provides detailed dimensions and tolerances for various bearing models, including bore, outside diameter, width, and load ratings. The bearings are inspected to ABEC-1 tolerances, except for the bore.

6. Shields, Seals, and Snap Ring Combinations
Various combinations of shields and seals are available, with snap rings typically packaged separately. The catalog details the dimensions and tolerances for these components.

Key Specifications

Bore sizes range from 6.35 mm to 280 mm.
Load ratings vary across models, with static and dynamic load capacities provided.
Materials include steel, aluminum, and engineered plastics.
Custom designs are available to solve specific assembly problems and reduce inventory.

Overview: The document is a technical catalog from Timken, detailing various bearings and their applications, specifications, and special features. It includes information on lip seals, typical applications, and specific bearing numbers.

Typical Applications: Bearings are used in various agricultural and industrial machinery such as disk harrows, transport wheels, chain cases, corn pickers, and balers. Each application requires specific bearing types to ensure optimal performance.

Special Features: Many bearings feature oil seals on one side, tri-ply seals, offset rings, and extended inner rings. These features are designed to enhance durability and performance in specific applications.

Specifications: The catalog provides detailed specifications for each bearing, including bore size, inner and outer width, and special features like R-seals and shroud caps. Dimensions and tolerances are specified in both metric and imperial units.

Product Series: The document includes information on different series of bearings, such as the XLS/BIC series and BIh series. These series are characterized by their large diameters, compact sections, and maximum capacity designs, suitable for applications with space restrictions.

Key Data from Tables: The tables provide detailed measurements and load ratings for each bearing type. For example, the XLS44K bearing has a bore of 69.850 mm, an outside diameter of 104.775 mm, and a static load rating of 22000 N.

Recommendations: The document suggests selecting bearings based on specific application requirements, considering factors like load capacity, space constraints, and environmental conditions.

Overview: The document is a technical catalog from Timken, detailing specifications and features of various radial and angular contact ball bearings. It includes information on different series of bearings, their dimensions, tolerances, and load ratings.

Specifications: The catalog provides detailed specifications for each bearing, including bore diameter, outside diameter, width, fillet radius, weight, static load rating, and dynamic load rating. Tolerances for these dimensions are also specified.

Product Series: The document covers several series of bearings, including the 7000WN, 7300WN, 7400W, and 5200K series. Each series is designed for specific applications and load conditions, with variations in contact angles and cage materials.

Contact Angles and Cages: Bearings are available with different contact angles (20°, 30°, 35°, and 40°) and cage materials (steel, nylon, and bronze). The choice of contact angle and cage material affects the bearing's load capacity and application suitability.

Load Capacities: The catalog provides static and dynamic load ratings for each bearing, indicating the maximum loads the bearings can handle. These ratings are based on calculated fatigue life, typically measured in revolutions.

Applications: Recommendations are provided for using single bearings, duplex pairs, and tandem pairs based on the direction and magnitude of thrust loads. The document suggests configurations for applications with high thrust loads or where axial displacement needs to be restricted.

Additional Features: Some bearings are available with special features such as high-strength machined bronze retainers or refined bore diameter tolerances. These features enhance the performance and durability of the bearings in specific applications.

Notes: The document includes notes on maximum shaft or housing fillet radius, availability of certain designs, and additional options like shield and snap ring combinations.

Overview: The document provides detailed specifications and descriptions of various series of wide inner ring bearings, focusing on their design, features, and applications. It includes information on setscrew locking devices, concentric collars, and relubricatable types, highlighting their suitability for different industrial applications.

Specifications: The bearings are dimensionally interchangeable with the RA-RR Series and available in shaft sizes ranging from 5/8 inch to 1 1/2 inches. They feature superfinished raceways, grade 10 balls, and anti-backout nylon patch setscrews. The bearings are factory prelubricated and relubricatable, with options for both relubricatable and non-relubricatable versions.

Series Descriptions:

Y Series: Full-width inner ring bearings designed for increased shaft support in HVAC, conveyors, and other industrial applications.
YA Series: Extended inner ring type with specially designed setscrews and positive contact land-riding R-Seals for protection against contaminants.
ER Series: Offers industry-standard mounting dimensions and a unique setscrew locking device resistant to loosening during operation.
GC Series: Relubricatable bearings with spherical outside diameters and concentric collars locked to the shaft by setscrews.
YM Medium Duty Series: Designed for heavier loads with features like superfinished raceways and nylon patch setscrew locking devices.

Additional Features: The document also details the KR, KRR, and KRRB industrial series, which are non-relubricatable types designed for extremely dirty or wet conditions. They feature R-Seals with flared lips and Shroud-Seals for extra protection.

Ordering Information: To order, specify the bearing number followed by "+ COL". Example: 1103KRRB + COL.

Applications: These bearings are suitable for applications such as saw and paper mill operations, fan and blower assemblies, food and grain handling, and conveyor systems.

Overview: This document is a technical catalog from Timken, detailing specifications and ordering information for various series of ball bearings. It includes information on dimensions, tolerances, load ratings, and ordering instructions for different bearing types.

Specifications: The catalog provides detailed specifications for each bearing type, including dimensions such as bore size, outer diameter, and width. It also lists the static and dynamic load ratings, which indicate the bearing's capacity to withstand loads.

Procedures: Instructions for ordering bearings are provided, specifying that the bearing number should be followed by "+ COL" when placing an order. This ensures the correct configuration is selected.

Standards and Tolerances: The document outlines bore tolerances for different size ranges, ensuring precision in manufacturing and application. For example, bore tolerances for sizes 1 3/16” to 2 3/16” are nominal to .013 mm, +.0005”.

Recommendations: Suggested shaft tolerances are provided for optimal performance, with specific measurements for different size ranges to ensure proper fit and function.

Product Series: The catalog covers several series of bearings, including RA-RR, RA-RRB, GRA-RR, GRA-RRB, YA-RR, and YA-RRB. Each series has unique features such as cylindrical or spherical outside diameters, and options for relubrication.

Key Features: Bearings in these series are designed with extended inner rings and self-locking collars. They feature R-Seals for protection against contaminants and to retain lubricant under severe conditions. Some series are prelubricated, while others allow for relubrication.

Data Tables: The document includes extensive tables listing each bearing's specifications, such as dimensions, load ratings, and weight. These tables are crucial for selecting the appropriate bearing for specific applications.

Timken Products Catalog Overview

This document is a detailed catalog of Timken ball bearings, focusing on various series and types, including specifications, dimensions, and applications. The catalog is structured to provide comprehensive information on different bearing series, including GYA-RR, GYA-RRB, RAL-NPPB, KLL, KLLB, and G-KLLB, among others.

1. Specifications and Series Overview

GYA-RR and GYA-RRB Series: These bearings are dimensionally interchangeable with the YA-RR Series. The GYA-RR Series has cylindrical outside diameters, while the GYA-RRB Series features spherical outside diameters for unrestricted initial alignment.
RAL-NPPB Series: Designed for lightly loaded applications, these bearings are compact and cost-effective, featuring an extended inner ring with self-locking collars and prelubricated R-Seals.
KLL and KLLB Series: These non-relubricatable bearings come with one or two Mechani-Seals, suitable for higher speed and temperature applications. The KLLB type allows for self-alignment due to its spherical outside diameter.
G-KLL and G-KLLB Series: These are relubricatable types with two Mechani-Seals, suitable for high-speed and high-temperature applications, featuring low rotational torque due to non-contact seals.

2. Key Parameters and Tolerances

Shaft Tolerances: Suggested shaft tolerances are provided for different series, typically ranging from 1/2” to 2 15/16”, with specific nominal and negative tolerances.
Bore Tolerances: Bore tolerances are specified for various series, ensuring precision in fitting and performance.

3. Bearing Dimensions and Load Ratings

The catalog includes detailed tables listing bearing numbers, dimensions (bore, outer diameter, widths), weight, static and dynamic load ratings, and other critical specifications for each series.
Load ratings are provided in both static and dynamic forms, indicating the capacity of each bearing under different conditions.

4. Ordering Information

Instructions for ordering bearings are included, specifying the need to follow the bearing number with a "+ COL" suffix for certain series.

Conclusion

This catalog serves as a comprehensive guide for selecting the appropriate Timken ball bearings based on specific application requirements, providing detailed specifications, tolerances, and ordering instructions to ensure optimal performance and compatibility.

Overview: The document is a technical catalog from Timken, detailing various series of ball bearings, including specifications, tolerances, and applications. It covers multiple series such as GY-KRRB, GYM-KRRB, ER Industrial Series, and SM Industrial Series, each designed for specific industrial applications.

Specifications: The catalog provides detailed specifications for each bearing model, including bore size, outer diameter, ring widths, and load ratings. For example, the GY-KRRB series includes models with bore sizes ranging from 1/2” to 3 15/16”, with specific tolerances and load ratings provided for each size.

Procedures and Standards: The document outlines bore tolerances for different size ranges, ensuring precision in applications. It specifies suggested shaft tolerances for various series, ensuring compatibility and optimal performance in industrial settings.

Recommendations: The catalog suggests specific shaft tolerances for different series to ensure proper fit and function. For example, the ER Industrial Series is recommended for applications requiring low starting and running torque, with specific shaft tolerances provided for optimal performance.

Key Features: - GY-KRRB Setscrew Lock: Designed for extended bearing life in demanding environments, featuring a full-width inner ring and a three-piece seal for protection against corrosion and contamination. - ER Industrial Series: Offers low starting and running torque, with significant reductions in start-up torque compared to standard bearings. - SM Industrial Series: Available in Type A (cylindrical) and Type B (spherical) designs, with specific ring tolerances and corner radii.

Data Summary: The document includes tables with detailed measurements and load ratings for each bearing model, providing essential data for selecting the appropriate bearing for specific applications.

Overview: The document is a technical catalog from Timken, detailing various types of bearings and housed units. It includes specifications, ordering instructions, and application recommendations for different bearing series.

Specifications: The catalog provides detailed specifications for each bearing type, including dimensions, load ratings, and weight. For example, the SMN series bearings are listed with their bore size, outer diameter, width, and load capacities. The document also specifies bore tolerances and provides guidance on shaft tolerances for optimal performance.

Ordering Instructions: To order a bearing, specify the bearing number followed by "+ COL". For example, "SMN102K + COL". This ensures the correct collar is included with the bearing.

Series Descriptions:

SM-S Industrial Series: Features self-aligning capabilities, allowing the inner ring to align with the shaft. Bearings are not prelubricated, and specific shaft tolerances are recommended.
SMN-S Heavy Series: Similar to the SM-S series but designed for heavier loads. It also features self-alignment and requires specific shaft tolerances.

Housed Units: Timken offers a variety of housed units suitable for different applications, including agriculture, food processing, and conveyors. These units combine the bearing, housing, seal, and locking system into one device, simplifying installation and operation.

Key Features:

Wide range of sizes and materials, including cast iron, polymer, and pressed-steel housings.
Various seal and locking options to suit different operational needs.

Recommendations: For applications where thrust load exceeds 60% of radial load, consultation with a Timken representative is advised to ensure proper bearing selection and application.

Introduction
Ball bearing housed units are versatile components available in various types and sizes to suit different operating conditions. They typically feature cast iron housings and are designed for easy mounting on straight shafts. The units often include self-locking collars and setscrew inner bearing designs for secure installation. Several series also offer concentric locking collars.

Pillow Blocks
Pillow blocks are the most common type of mounted units, providing shaft support with a mounting surface parallel to the shaft axis. They come in various configurations, including pressed steel and rubber options for light-duty applications.

Flanged Cartridges
Flanged cartridges are used when a shaft passes through a machine frame at a right angle. They are available in standard and heavy-duty series, with options for iron and rubber materials. Flangette units offer an economical solution for light-duty applications.

Cylindrical Cartridges
These cartridges provide shaft support where the shaft axis is perpendicular to a machined housing. They are suitable for standard-duty applications and are available in synthetic, conductive rubber for low-cost, light-duty operations.

Take-Up Units
Take-up units are essential for applications requiring shaft adjustment and belt tightening, such as conveyors. They are available in cast iron for standard-duty and pressed steel for light-duty applications.

Installation Procedures
The installation of Timken housed units involves aligning the bearing on the shaft, securing the unit to the base, and using a self-locking collar to engage the bearing inner ring. The setscrew is then tightened to ensure the collar remains engaged.

SURVIVOR Series
The SURVIVOR Series is designed for highly corrosive environments, such as food processing. These units feature a proprietary thin dense chrome coating for superior corrosion protection and are dimensionally interchangeable with Timken's cast iron housed units.

Ordering Information
To order SURVIVOR polymer assemblies, add the "PT" suffix to the current cast iron housed unit designations.

Overview: The document provides detailed specifications and ordering information for Timken's SURVIVOR PT and NT Series bearings, as well as the RAK, TAK, LAK, YAK, and VAK industrial series. These products are designed for use in various industrial applications, including food handling and highly corrosive environments.

SURVIVOR PT Series: This series features components made from stainless steel, nylon, and polymer, with FDA-approved grease. It is suitable for applications requiring corrosion resistance.

SURVIVOR NT Series: Designed for food handling and corrosive applications, this series includes nickel-plated housings and thin dense chrome coating for enhanced protection. It is available in various configurations, including pillow blocks and flanged cartridges.

Ordering Information: To order SURVIVOR assemblies, add the "NT" suffix to the cast iron housed unit designations. For inserts, use the "TDCF" suffix.

RAK, TAK, LAK Industrial Series: These pillow blocks are designed for normal industrial loads and feature self-aligning capabilities and pre-lubrication. They are available with different seal types for various applications.

YAK Industrial Series: This series includes low-base setscrew pillow blocks suitable for normal industrial loads, with options for highly corrosive environments.

VAK Standard Series: Combines engineered housing with RA-RR extended inner ring bearings, suitable for various mounting positions and pre-lubricated for convenience.

Technical Specifications: The document includes detailed dimensions, load ratings, and suggested shaft tolerances for each series, ensuring compatibility and optimal performance in specified applications.

Overview: This document provides detailed specifications and data for various types of industrial bearings, specifically focusing on VAS, SAS, RAKH, RAKHL, and YASM series. It includes dimensions, load ratings, and installation guidelines for each bearing type.

Specifications:

VAS Series: Includes dimensions and load ratings for different shaft diameters. Notable for its 1/8 pipe thread grease fitting, except for specific units with 1/4-28 fitting.
SAS Series: Features a streamlined pillow block unit with Timken engineered housing and GYA-RRB setscrew bearing. Prelubricated with a grease fitting for relubrication. Suggested shaft tolerances are provided.
RAKH Series: Designed for interchangeability with competitive designs, these units provide fixed shaft location and allow for axial movement when used with RAKHL expansion units. Maximum operating temperature is 250°F (121°C).
RAKHL Expansion Series: Allows for axial shaft expansion due to temperature changes. Works in conjunction with RAKH pillow blocks.
YASM Medium Duty Series: Suitable for conveyor, fan, blower, sawmill, and grain handling applications. Features durable cast iron housings with corrosion resistance.

Procedures and Recommendations:

All units are factory prelubricated but include fittings for additional lubrication if necessary.
For ordering, specify the unit and shaft diameter. Popular sizes are highlighted in bold.
Suggested shaft tolerances are provided for each series to ensure proper fit and function.

Key Data and Tables:

Tables include detailed dimensions, load ratings, and weight for each bearing unit.
Specific bearing numbers and corresponding page references in the Timken Products Catalog are provided for further details.

Overview: The document provides detailed specifications and guidelines for various industrial bearing units, including the SAL, SAOL, DRNR, and RCJ/TCJ/LCJ series. These units are designed for applications involving varying temperatures and require specific mounting configurations.

SAL Industrial Series:

Designed for applications with normal to high temperatures.
Includes fixed and floating types to accommodate shaft expansion.
Features self-aligning SM wide inner ring bearings and self-locking collars.
Equipped with oil-tight seals, suitable for oil or grease lubrication.
Installation requires lubrication with high-grade oil or grease.
Suggested shaft tolerances are provided for different sizes.

SAOL Heavy Series:

Suitable for higher temperature applications.
Similar features to the SAL series, with additional specifications for larger sizes.
Includes self-aligning SMN wide inner ring bearings.
Oil-type seals are standard, with grease lubrication as an option.

DRNR Industrial Series:

Rigid double pillow block design for heavy-duty applications.
Compact housing with two wide inner ring bearings and integral R-Seals.
Individual grease chambers and fittings for relubrication.
Can be mounted in any position, ensuring radial and thrust capacity.
Suggested shaft tolerances are specified.

RCJ, TCJ, LCJ Industrial Series:

Used in applications requiring minimal machining.
Units come assembled and ready for mounting.
Equipped with wide inner ring bearings that compensate for shaft misalignment.
RCJ flange cartridge features G-KRRB (R-Seal) bearings.

Ordering Information: To order, specify the unit and shaft diameter, and whether the unit is fixed or floating. Examples are provided for clarity.

Overview: The document provides detailed specifications and guidelines for various Timken bearing units, including G-KPPB, G-KLLB, RCJ, TCJ, LCJ, RCJC, YCJ, VCJ, and SCJ series. These bearings are designed for different industrial applications, offering features like prelubrication, self-locking collars, and safety end caps.

Specifications:

G-KPPB (Tri-Ply Seal): Wide inner ring bearings suitable for dirty environments.
G-KLLB (Mechani-Seal): Wide inner ring bearings used in LCJ units.
RCJ and TCJ Units: TCJ units use Tri-Ply seal bearings, offering enhanced protection.
RCJC Industrial Series: Features concentric collar bearings for self-alignment and interchangeable bolt hole spacing with RCJ series.
YCJ Industrial Setscrew Series: Uses setscrews for locking, with spherical outside diameter for self-alignment.
VCJ Standard Series: Flange cartridges with GRA-RRB bearings, ideal for minimal machining applications.
SCJ Standard Series: Flange cartridges with GYA-RRB bearings, suitable for applications requiring minimal shaft length.

Procedures and Recommendations:

Units are factory prelubricated, but grease fittings are available for relubrication.
For highly corrosive applications, consult Timken for thin dense chrome-coated bearings.
Safety end caps are available for selected sizes.
Suggested shaft tolerances are provided for different unit sizes.

Data and Load Ratings:

Detailed tables provide dimensions, load ratings, and bearing numbers for each unit type.
Specific shaft diameters and tolerances are recommended for optimal performance.

Ordering Information:

To order, specify the unit and shaft diameter, with examples provided for clarity.
Popular sizes are highlighted in bold for easy reference.

PBS Series Overview:
The PBS series is designed for economical transmission units suitable for light-duty and moderate-speed applications. The housing is constructed from heavy-gauge, zinc-plated steel stampings, and includes RA-RRB extended inner-ring bearings with positive contact land-riding seals. These units are prelubricated and feature a Timken self-locking collar for assembly. The base-to-center height and bolt spacing are compatible with many other pillow blocks on the market.

Specifications:
- Shaft diameter options range from 7/8" to 1 7/16".
- Load ratings and dimensions vary per unit, with specific models like RA100RRB and RA103RRB offering different capacities and sizes.
- Suggested shaft tolerances are nominal to -0.013 mm, -0.0005".

PB and RPB Series Overview:
The PB series offers ball bearings at an economical price for light-duty applications. It features a two-piece separable zinc-plated steel housing with a spherical bearing seat for self-alignment. The RPB series includes a thick, electrically-conductive rubber interliner for noise reduction and vibration control.

Specifications:
- Shaft diameter options range from 1/2" to 1 1/4".
- Load ratings and dimensions vary per unit, with models like RA100RRB and RA103RRB2 providing different specifications.
- Suggested shaft tolerances are nominal to -0.013 mm, -0.0005".

vFMST and LFST Series Overview:
The vFMST series is a zinc-plated, pressed-metal flange unit ideal for light-duty applications, featuring flush-mounting and self-alignment. The LFST series simplifies bearing flange unit installations with a conductive rubber interliner for noise and vibration reduction.

Specifications:
- Shaft diameter options range from 3/4" to 1 1/4".
- Load ratings and dimensions vary per unit, with models like RA012RRB and RA103RRB offering different capacities.
- Suggested shaft tolerances are nominal to -0.013 mm, -0.0005".

RR Flangette Unit Overview:
The RR Flangette unit consists of two interchangeable, pressed-steel, zinc-plated flanges housing a standard bearing with a self-locking collar. It provides initial self-alignment and is equipped with the KRRB (R-Seal) wide inner ring ball bearing.

Specifications:
- Shaft diameter options range from 1/2" to 2 1/8".
- Load ratings and dimensions vary per unit, with models like 1008KRRB and 1105KRRB offering different specifications.
- Suggested shaft tolerances vary based on shaft diameter, with specific tolerances provided for different size ranges.

Overview: The document provides detailed specifications and guidelines for various bearing units and their applications, focusing on the RCSM, RCR, CR, RABR, RTU, and YTU series. It includes information on dimensions, load ratings, and suggested tolerances for shaft and housing diameters.

Specifications: The document outlines specific shaft tolerances for different bearing sizes, such as ½” to 1 15/16” with nominal to -0.10 mm, and 2” to 2 3/16” with nominal to -0.0255 mm. It also provides detailed dimensions and load ratings for each bearing unit, including radial load ratings and maximum suggested speeds.

Procedures: Instructions for ordering are provided, specifying the need to mention the unit and shaft diameter. Popular sizes are highlighted in bold for ease of selection.

Norms and Recommendations: The document suggests housing diameters and provides guidelines for maximum speeds and load ratings. It also emphasizes the importance of using the correct suffix for replacement bearings and highlights the need for prelubrication and relubrication options.

Applications: The bearings are designed for various applications, including domestic heating, air-conditioning, ventilating equipment, and conveyor systems. Special series like the RABR HVAC are noted for their conductive rubber interliner to dissipate static charges.

Key Data from Tables: The tables provide comprehensive data on bearing dimensions, load ratings, and suggested housing diameters. They also include specific details for each series, such as the RCSM, RCR, CR, and RTU series, with emphasis on their unique features and applications.

Critical Information: The document highlights the importance of selecting the correct bearing unit and shaft diameter for specific applications. It also stresses the need for proper lubrication and maintenance to ensure optimal performance and longevity of the bearings.

Overview: This document provides detailed specifications and guidelines for Timken bearing units, specifically designed for applications requiring shaft adjustment and belt-tightening, such as conveyor systems. It includes information on various series of bearings, their features, and ordering instructions.

Specifications:

Incorporates self-aligning B-Type extra wide inner ring ball bearings with setscrew lock.
Factory prelubricated with a grease fitting for relubrication if necessary.
Safety end caps available for selected sizes.
Suggested shaft tolerances: ½”- 1 15/16”, nominal to -.013 mm, -.0005”; 2”- 2 15/16”, nominal to -.025 mm, -.0010”.

Product Series:

YTU Industrial Series: Provides compact, efficient supports for adjustable shafts and conveyor take-up pulleys. Includes dimensions and load ratings for various units.
VTU Standard Series: Similar applications as YTU, with specific shaft tolerances and bearing data provided.
TTU Industrial Series: Features self-aligning, B-Type, extra wide inner ring ball bearings with self-locking collars, suitable for highly corrosive applications.

Idler Pulley Units:

Combines a pressed-steel pulley and a Timken precision ball bearing with rubber seals.
Available in designs for V-belts and chain idlers, featuring non-relubricatable units with special features for durability and efficiency.

Ordering Information:

Specify unit and shaft diameter when ordering, with popular sizes highlighted in bold.
Contact Timken representatives for applications involving high corrosion exposure.

Additional Features:

Housed units replacement chart provided for easy reference.
Roller chain idler sprockets made from sintered steel, offering an economical solution for various applications.

Overview: The document is a technical catalog from Timken, detailing various types of bearings and related components. It includes specifications, features, and installation procedures for different bearing models and safety end caps.

Specifications: The catalog lists numerous bearing types, such as RCJ, RCJN, RRT, RFC, and others, each with specific features like non-relubricatable or relubricatable options, spherical outer rings, and double R-seals. Examples are provided for each type, indicating the bearing number and corresponding components.

Installation Procedures: The document outlines the installation steps for Timken safety end caps, which include cleaning the mounting area, attaching the adhesive-backed mounting ring, and snapping the end cap into place. These end caps are designed to protect rotating shafts and meet OSHA requirements.

Lubrication: Timken offers a range of lubricants designed for high-temperature and demanding environments. The catalog describes single-point and centralized multi-point lubricators, which help maintain proper lubrication for bearings and other components.

Super Precision Bearings: Timken provides super precision machine tool bearings, suitable for high-speed and high-stiffness applications. These bearings come in various sizes and configurations, offering benefits like low noise and vibration, high accuracy, and low operating temperatures.

Safety End Caps: The catalog details the features and ordering information for Timken safety end caps, which are available in kits for different shaft sizes and housing styles. These caps are easy to install and provide basic protection and washdown capabilities.

Introduction
The Timken Products Catalog D147 focuses on super precision ball bearings, detailing various types and their applications. It explains the significance of prefixes and suffixes in the Timken® Fafnir® numbering system, which denote size, series, and special variations for precision bearings.

Specifications
Super precision bearings are categorized by their ABEC/ISO classes, with additional parameters like raceway curvature, ball sphericity, and preload offset tolerance impacting performance. Timken ensures strict control over these parameters to provide premium performance.

Optimized Grades of Precision
Timken offers MM, MMV, and MMX grades, with MM and MMV providing super precision and MMX offering ultra precision. These bearings are designed for high-speed applications with tight tolerances.

Bearing Types
Angular-contact bearings are available in various configurations, such as 2MM-WI and 3MM-WI, designed for different load and speed requirements. Ball screw support bearings are also highlighted, designed for high stiffness in servo-controlled machinery.

Applications
Timken bearings are used in various applications, including high-speed internal grinding spindles, ultra precision surface grinding spindles, and heavy-duty precision boring spindles. Each application requires specific bearing configurations to ensure optimal performance.

Special Requirements
High-speed grease-lubricated spindles and heavy precision workheads are examples of applications requiring special design features, which Timken can accommodate through consultation with their representatives.

Conclusion
The catalog provides detailed assembly drawings and examples of successful applications, emphasizing the importance of selecting the right bearings for specific machine tool requirements.

High-Speed Precision Boring Head
This component operates at 2500 to 3000 RPM using angular-contact, super precision bearings. The front bearings are of different sizes, with the larger bearing clamped against the housing shoulder. The rear bearings are spring-loaded and allowed to float to accommodate temperature changes. Grease lubrication is used to prevent excessive heat generation.

Ultra Precision Grinding Workhead
This workhead maintains accuracy within ten millionths of an inch using ultra precision ball bearings and a stiff shaft. It features a four-bearing arrangement for heavy work and a two-bearing setup for lighter tasks. Bearings are grease-packed before mounting.

Precision Toolroom Surface Grinder Spindle
Utilizes Timken® Fafnir® duplexed, super precision, preloaded bearings for rigidity and low operating temperature. The housing is straight-bored for alignment, and the rear bearings float to compensate for thermal changes. Bearings are grease lubricated for life.

Single Bar Machine
Supported by two pairs of super precision bearings, operating speeds range from 78 to 1500 RPM. A pair of bearings carries a 25000-pound thrust load during unchucking. Bearings are grease-packed for life.

100,000 RPM High-Cycle Wheelhead
Features super precision bearings produced to ABEC 9 (ISO P2) tolerances, operating at 100,000 RPM with oil mist lubrication and water-cooled motor.

Precision Jig-Boring Spindle
Delivers extreme accuracy over a wide speed range, supported by grease-lubricated super precision bearings. It achieves hole location accuracy of one ten-thousandth of an inch.

Super Precision Lathe Headstock
Produces work with roundness of 35 millionths of an inch at speeds up to 4800 RPM. Utilizes tandem and spring-loaded bearings for rigidity, prelubricated with grease.

High-Speed Motorized Router
Uses a duplex pair of super precision ball bearings for routing through aluminum plates. Driven by a 30 hp motor at speeds up to 15000 RPM with oil mist lubrication.

Precision Vertical Milling Spindle
Operates at 12 speeds from 260 to 6200 RPM. Features duplex pairs of preloaded bearings for high radial and axial rigidity, with grease-packed bearings for life.

Ball Bearings Specifications
The document includes detailed specifications for various ball bearings, including dimensions, load ratings, and tolerances. Bearings are designed to meet ABEC 9 (ISO P2) levels for running accuracy and performance, with non-critical features conforming to ABEC 7 (ISO P4) requirements.

Overview: The document is a technical catalog from Timken, detailing specifications and performance data for various bearing models, specifically the 2MM and 3MM series. It includes information on dimensions, load ratings, speed capabilities, and construction features.

Specifications: Each bearing model is listed with its dimensions (bore, outer diameter, width), weight, and ball quantity. The document provides static and dynamic load ratings, limiting speeds, and radial clearances. The bearings are categorized by series, such as ultra-light and super precision, with specific construction features like the Wi construction, which includes a low shoulder on the non-thrust side of outer rings.

Performance Data: The catalog includes speed capability data for grease and oil lubrication, with specific RPM values for different mounting configurations. It also provides preload and stiffness data, indicating axial and radial stiffness in N/µm and lbs./in.

Construction and Design: The Wi construction is highlighted, which incorporates a maximum complement of balls separated by a one-piece cage. The bearings meet ABEC 9 (ISO P2) levels for running accuracy and performance, with non-critical features conforming to ABEC 7 (ISO P4) requirements.

Notes and Recommendations: The document advises consulting a Timken representative for mounting arrangements other than DB or DF. It also provides guidelines for permissible speed calculations and adjustments for ceramic ball complements.

Key Tables and Data: The document contains extensive tables listing each bearing model with its corresponding specifications and performance metrics. Key data includes preload values, axial and radial stiffness, and operating speeds under various conditions.

Overview: The document is a technical catalog from Timken, detailing specifications for various ball bearings. It includes dimensions, load ratings, and recommended fits for different bearing models.

Specifications: Each bearing model is listed with its bore diameter, outer diameter, width, ball quantity, weight, static and dynamic load ratings, and limiting speed. The document provides both metric and inch measurements.

Dimensional Details: The catalog specifies tolerances for bore and outer diameters, as well as width tolerances for preloaded bearing sets. It also includes shoulder diameters and shaft diameters for mounting fits.

Performance Standards: Bearings meet ABEC 9 (ISO P2) levels for running accuracy and performance, with non-critical features conforming to ABEC 7 (ISO P4) requirements.

Construction: The bearings use Conrad construction with a maximum complement of balls separated by a two-piece land piloted cage.

Load Ratings: The document provides static and dynamic load ratings for each bearing, indicating their capacity to withstand loads during operation.

Recommended Fits: Suggested fixed and floating shoulder diameters, shaft diameters, and housing bore dimensions are provided to ensure proper mounting and operation.

Key Data Extraction: The catalog includes detailed tables with precise measurements and tolerances, essential for selecting the appropriate bearing for specific applications.

Overview: The document is a technical catalog for Timken ball bearings, detailing specifications, dimensions, load ratings, and recommended fits for various bearing models. It includes both metric and inch measurements, focusing on super precision bearings.

Load Ratings: The catalog specifies static (Co) and dynamic (Ce) load ratings for each bearing, indicating the maximum load the bearing can withstand without permanent deformation and the load it can endure during operation, respectively.

Dimensional Sizes: The document lists dimensions for each bearing model, including bore diameter (d), outer diameter (D), and width (c). It also specifies the number and size of balls used in each bearing.

Recommended Fits: Suggested fits for fixed and floating applications are provided, including shoulder diameters, shaft diameters, and housing bore dimensions. The document outlines mounting fits for both stationary and rotating applications.

Performance Standards: The bearings meet ABEC 9 (ISO P2) levels for running accuracy and performance, with non-critical features conforming to ABEC 7 (ISO P4) requirements. The construction includes a maximum complement of balls separated by a two-piece land piloted cage.

Key Data Extraction: The document includes tables with detailed specifications for each bearing model, such as MM203K, MM204K, etc., with data on dimensions, load ratings, and recommended fits. This information is crucial for selecting the appropriate bearing for specific applications.

Overview: This document provides technical specifications and guidelines for Timken bearings, specifically the MM-EX and MM-XWO series, designed for replacement on Ex-Cell-O spindles. It includes details on design tolerances, construction types, and operational recommendations.

Specifications:

The MM-EX series features a nominal plus tolerance with "WI" construction, while the MM-XWO series has a nominal minus tolerance with "WO" construction.
Bearings are not intended for new design applications and should not be interchanged with MM-XWO.
Key features include four slots in outer ring faces and no keyway in bore for certain models.

Procedures and Recommendations:

Consult a Timken representative for new design applications.
Measurement of shafts and housings is crucial to determine the appropriate replacement bearing style.
Shafts and housings should be checked and reworked to ensure proper fits.
Preload selection should be based on the spindle's operating speed and lubrication system.

Performance Parameters:

Bearings are designed to meet specific Ex-Cell-O replacement requirements with detailed bore and O.D. tolerances.
Maximum RPM varies by model, with specifications provided for grease, oil, and mist lubrication systems.

Key Data from Tables:

Each bearing model is listed with its part number, preload, bore, O.D., width, and maximum RPM for different lubrication methods.
For example, the MM165XWOCRDU model has a bore of 3.50000 inches, an O.D. of 6.3125 inches, and a maximum RPM of 9000 with oil mist lubrication.

Additional Information:

The document emphasizes the importance of not interchanging MM-EX with MM-XWO bearings.
Timken provides a range of products including bearings, power transmission systems, precision components, gears, seals, and lubrication services.

Catalog excerpts

CYLINDRICAL ROLLER BEARING CATALOG TIMKEN BALL BEARINGS CATALOG

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CYLINDRICAL ROLLER BEARING CATALOG TIMKEN BALL BEARINGS CATALOG

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BALL BEARINGS TIMKEN PRODUCTS CATALOG TIMKEN SERVICE

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RADIAL AND ANGULAR CONTACT BEARINGS Overview: Timken is a premier manufacturer of ball bearings. We produce a broad range of precision ball bearings, wide inner ring ball bearings and housed units for standard industrial applications and specialized uses. From standard single-row deep groove radial ball bearings to advanced integral designs, Timken has your solution. • izes: 3 mm - 600 mm bore. S • arkets: Aircraft, construction, agriculture, machine tool and general industry. M • eatures: Special coatings for corrosion resistance, special seal designs. F • enefits: Radial: Better life in contaminated...

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Radial and Angular Contact Ball Bearings Prefixes: A stainless steel F flanged outer ring H snug fit J extra loose internal fit JJ extra extra loose internal fit L internal self-aligning M precision ABEC 3 P loose fit R normal fit S extra small inch-dimension type T tight fit V precision ABEC 5 W wide-type single-row (same width inner and outer) WIR single-row, wide inner only Bore Size: (04 and up: multiply last two numbers by five to get bore in millimeters) 00 10 mm 01 12 mm 02 15 mm 03 17 mm 04 20 mm 05 25 mm 12 60 mm 20 100 mm Numbers: Basic Type Series: S1 3, 5, 7, etc., single-row inch,...

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Radial and Angular Contact Ball Bearings Radial Ball Bearings Tri-Ply Seal Series, Non-Relubricatable Type Extra Small 30 Metric Series . . . . . . . . . . . . . . . . . . . . . . . . . . . D6 Extra Small 33 Series and S Inch Series . . . . . . . . . . . . . . . . . . D8 Tri-Ply Seal Series, Relubricatable Type . . . . . . . . . . . . . . . . . D29 F Flanged Series, Cylindrical and Tapered O.D. . . . . . . . . . . . . D9 Tri-Ply Seal Series, Disk Harrow Units . . . . . . . . . . . . . . . . . . D30 RTF-Rubber Tire Flanged Housed Unit . . . . . . . . . . . . . . . . . . D10 Light 200 Series, R-Seal...

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BALL BEARINGS INTRODUCTION EXTRA SMALL SERIES Extra small bearings are available in the 30 Metric Series, the 33 and S Inch Series and the F Flanged Series. These bearings can sustain radial, thrust and combined loads proportionate to the capacities of the small shafts for which they are designed. They are appropriate for use in fractional horsepower motors, precision instruments, domestic appliances, film projectors and similar devices. The F flanged series has external shoulders with the bearing for mounting in through-bored housings. This series is used where compactness is essential or where...

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Radial and Angular Contact Ball Bearings XLS AND EXTRA LARGE 100 SERIES Bearings in the inch-dimension XLS Series and metric-dimension Extra Large 100 Series have extra large diameters and a compact cross section. XLS bearings are made in the Conrad and maximum capacity filling slot designs. The Extra Large 100 Series offers the maximum capacity, filling slot and counterbore types. XLS and Extra Large 100 Series TRI-PLY SEAL DISK HARROW BEARINGS Bearings with Tri-Ply Seals are designed for service involving severe contamination, such as disk harrows, disk tillers and other seed preparation equipment...

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BALL BEARINGS Extra Small 30 Metric Series • Offer various combinations of shields and seals, as listed below. • Electric motor quality for applications where quietness is required. • Stainless steel series, denoted by a prefix A before the • Designed for small shafts. • Can sustain radial, thrust and combined load proportionate to capacities of small shafts. • Suitable for use in fractional horsepower motors, domestic appliances, precision instruments and similar devices. bearing number. (Example: A38K) Open and shielded types dimensions – tolerances Bearing Number Bore Outside Width Fillet...

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Radial and Angular Contact Ball Bearings Extra Small 30 Metric Series MECHANI-SEALS • Developed by The Timken Company. • Adapted to the 30 metric series for effective grease retention and exclusion of foreign matter. • Can be operated at speeds comparable to open-type bearings. • Available with: ® • One Mechani-Seal (suffix L). • One Mechani-Seal and one shield (suffix LD). • Two Mechani-Seals (suffix LL). One Seal One Seal and Shield L LD Inner Wt. Fillet Seal Protection (1) DIMENSIONS – TOLERANCES Bearing Number Bore d one +0.000 mm seal one and two -0.008 mm seal shield seals +0.0000" L LD...

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BALL BEARINGS Extra Small 33 and S Inch Series • Designed for small shafts. • Can sustain radial, thrust and combined loads, proportionate to capacities of small shafts. • Suitable for use in fractional horsepower motors, domestic appliances, precision instruments and similar devices. • Include combinations of shields and seals, as listed below. • Electric motor quality for applications where quietness is required. • Several sizes are manufactured both in standard bearing-quality steel and stainless steel, as indicated in the tables. DIMENSIONS – TOLERANCES Bearing Number Bore Outside Width Fillet...

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Radial and Angular Contact Ball Bearings E Flanged Series CYLINDRICAL O.D. • Four sizes offered in flanged construction. • Integral shoulders for mounting in through-bored housings. • Straight outside diameters. • Interchangeable with corresponding unflanged sizes. • Available with double shields. • Electric motor quality for applications where quietness Open Type Shielded Type DIMENSIONS – TOLERANCES Bearing Number Bore Outside Width Inner Ring Flange Shielded Type Wt. Static Extended d Diameter C Shoulder Overall Load Dynamic chamfer D Width Rating Load Rating J x 45° A CO +0.000 mm +0.25 mm...

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BALL BEARINGS ST Flangette Unit • Pressed steel housed units designed for light-duty applications. • Available in shaft sizes from 6.35 mm - 12.7 mm (1/4 to 1/2 inch). • Designed to simplify mounting on side plate or frame-type housings. • Two identical steel stampings house a clamp-type bearing with a spherical O.D. outer ring. • Spherical inside surface of each stamping mates with the spherical O.D. of the bearing, providing initial self-alignment at mounting. • Offers features of basic clamp-type bearing. • Available with sealed or shielded construction. • Radial load capacity is 25 percent...

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Timken Ball Bearings

Timken Ball Bearings

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