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Timken Spherical Roller Bearing Solid-block Housed Unit Catalog
Timken Spherical Roller Bearing Solid-block Housed Unit Catalog
Timken offers a wide range of housed units designed to improve productivity and uptime across various industries. Their products include bearings, engineered steel, and mechanical power transmission components, supported by a global team of experts.
Timken's housed units are engineered to protect bearings in harsh environments, offering options like ball, tapered, and spherical bearings with enhancements such as seals and lubricants to extend bearing life and reduce maintenance costs.
- Ball Bearing Housed Units: Feature wide-inner-ring ball bearings for additional shaft support and easy installation, suitable for agricultural applications, fans, blowers, food processing devices, and conveyors.
- Type E Housed Units: Designed to repel contaminants with double-lip seals and a corrosion-resistant finish, ideal for industries like pulp and paper, power generation, and mining.
- Spherical Roller Bearing Solid-Block Housed Units: Withstand harsh conditions, offering multiple locking configurations and sealing options, used in metals mills, mining, and power generation industries.
- SAF Split-Block Housed Units: Available in various materials, designed for heavy loads and ease of installation, used in power generation, mining, and food processing industries.
- SNT Split Plummer Blocks: Available in metric sizes, suitable for heavy loads, used in power generation, mining, and food processing industries.
Timken provides guidelines for the shelf life and storage of grease-lubricated bearings and components, emphasizing the importance of proper storage to maintain product integrity and performance.
- Maintain temperature between 0°C (32°F) and 40°C (104°F) with minimal fluctuations.
- Keep relative humidity below 60% and surfaces dry.
- Ensure the storage area is free from airborne contaminants and isolated from vibrations.
- Avoid extreme conditions.
- Follow stricter storage requirements if necessary.
- Bearing components are shipped with a corrosion-preventive compound, not a lubricant.
- Remove the compound before using specialized grease lubrications.
- Most housed units are pre-packed with general-purpose grease; frequent replenishment may be needed.
- Different lubricants may be incompatible; select carefully.
- Do not remove products from packaging until ready for mounting.
- Avoid excessive force during mounting/dismounting.
- Follow tolerance, fit, and torque recommendations.
- Ensure proper alignment and never weld housed units.
- Do not heat components with an open flame or operate above 121°C (250°F).
- Proper maintenance and handling are critical to avoid equipment failure.
- Overheated bearings can ignite explosive atmospheres; special care is needed in such environments.
- Use mild steel bars for installation/removal to prevent high-speed fragment release.
- Do not use damaged housed units to avoid equipment damage or injury.
- Timken spherical roller bearing solid-block housed units are designed for harsh environments, handling high temperatures, speeds, loads, and misalignment.
- Customizable with various shaft-locking styles, seals, and housings.
- Available housing styles include pillow blocks, flange blocks, cartridges, and take-up blocks.
- Locking styles include eccentric lock, concentric lock, tapered adapter lock, and V-Lock.
- Seals include labyrinth, triple-lip nitrile, and urethane seals.
- Housing coatings available in powder coating, nickel plating, and Dykor coating.
- Suitable for metal mills, mining, power generation, agriculture, and more.
- Applications include material conveying, building equipment, waste management, and construction vehicles.
- Accommodates shaft diameters from 35 mm to 180 mm.
- Quick installation and improved performance in high-contaminant environments.
- Increased uptime and reduced shaft damage.
- Accepts up to ±1.5 degrees of misalignment.
- Dimensionally interchangeable with other mounted roller bearing units.
The catalog provides analysis tools and data for product selection, but suitability must be validated for specific applications. Timken products are subject to terms and conditions of sale, including limited warranty and remedy.
The spherical roller bearing solid-block housed units feature a standard relief valve and optional bolt-on open and closed steel or urethane secondary seals. They include a double-row spherical roller bearing that accepts misalignment and a black oxide inner ring to reduce shaft fretting corrosion. The units offer six primary seal options, including Teflon®, nitrile rubber, Viton®, and urethane. Five shaft-locking styles are available: single screw set, double screw set, eccentric, tapered adapter, and V-Lock®. The housing fit is J7, size-for-size to light interference, and the units are lubricated with premium industrial grease.
The design allows flexibility through interchangeable components and easy conversion to fixed or expansion in the field. The housing can be coated with powder, nickel, or Dykor® and is manufactured from 75000 psi tensile cast steel, ensuring durability in rough applications.
The engineering section covers topics such as bearing load, normal speed ratings for seals, seal material chemical compatibility, internal radial clearance, shafting, misalignment, lubrication, and installation guides. It provides formulas for calculating drive loads and load sharing among bearings.
Bearing loads are categorized into static, drive, and imposed loads, with radial and axial (thrust) loads being the primary considerations. The document provides formulas for calculating dynamic equivalent radial loads and bearing life, with guidelines for selecting appropriate bearing life targets based on machinery operation hours.
Tables are provided for equivalent radial load factors and allowable radial loads at various RPMs for different shaft diameters and bearing numbers. These tables help in determining the appropriate bearings for specific applications.
This section provides a comprehensive table detailing the chemical compatibility of various seal materials such as Urethane, Nitrile rubber, DuPont™ Viton®, and DuPont™ Teflon® with different chemicals. The compatibility is categorized as A (Little to no effect), B (Minor to moderate effect), C (Severe effect to destruction), and N (No data – test prior to use). The document emphasizes the importance of testing materials prior to use when data is unavailable.
The document includes tables specifying the internal radial clearances for different series of bearings. The tables provide minimum and maximum clearance values in both millimeters and inches for various shaft diameters and bearing numbers.
This section discusses the importance of proper shafting, including recommendations for shaft tolerances and the effects of thermal expansion on steel shafts. It advises on the use of fixed and floating bearings depending on the material and temperature differences between the shaft and framework.
The document explains the self-aligning capability of spherical roller bearing housed units, which can accommodate up to ±1.5 degrees of misalignment without reducing performance life. It also details the use of premium industrial grease for lubrication, suitable for a wide range of temperatures, and mentions compliance with European REACH regulations.
Instructions for installing Timken® solid-block housed unit V-Lock® bearings are provided, emphasizing the importance of clean, straight shafts and proper alignment. The guide includes steps for mounting and securing the housed units, with recommendations for shimming and torqueing bolts to ensure proper installation.
- Clean oil off the sleeve and wedge, apply a thin oil film to the shaft.
- For single-nut housed units, slide the sleeve into position on the shaft.
- For double-nut housed units, ensure the sleeve nut is flush with the sleeve end and slide the assembly into position.
- Remove covers and loosen set screws on the wedge nut.
- Turn the wedge nut counterclockwise to remove the wedge.
- For single-nut units, remove the bearing and sleeve from the shaft.
- For double-nut units, loosen set screws on the sleeve nut, turn clockwise to un-seat, and remove the assembly.
Various tolerances are specified for different shaft diameters and bearing numbers, ensuring proper fit and function.
Torque values are provided for different bearing sizes and set screw sizes to ensure secure installation.
- Use NLGI No. 2 lithium-complex grease for prelubrication.
- Relubricate with compatible grease, especially under extreme conditions.
- Monitor and adjust lubrication to maintain optimal bearing temperature.
Instructions are provided for converting housed units from fixed to expansion and vice versa, with specific steps for flange and pillow block configurations.
- Proper maintenance and handling are critical to avoid risks of injury.
- Overheated bearings can ignite explosive atmospheres; proper selection, installation, and maintenance are essential.
Table C-25 provides suggested intervals based on shaft diameter, bearing number, and operating conditions.
- Ensure the shaft is clean and of proper diameter.
- Apply oil film and slide the housed unit into position.
- Align and secure with mounting bolts, using full shims if necessary.
- Tighten set screws as per specified torque values.
Adequate lubrication is crucial for the longevity of housed unit bearings. Table C-28 provides initial reference points for relubrication intervals based on shaft diameter, RPM, and temperature. It is recommended to adjust these intervals based on specific application experiences. For periods of inactivity, additional grease should be applied to prevent corrosion.
To convert a solid-block housed unit from fixed to expansion, follow these steps: mark the housing and retaining nut, loosen the Teflon-tipped set screw, rotate the retaining nut counterclockwise, and retighten the set screw. Ensure the unit is correctly oriented, as the converted bearing can only float in the direction of the retaining nut.
To revert from expansion to fixed, loosen the set screw, tighten the retaining nut clockwise, and secure the set screw. For mounted bearings, release the locking-collar set screws to allow movement.
- Ensure the shaft is clean and of proper diameter.
- Apply oil to the shaft and bearing bore, position the housed unit, and secure with mounting bolts.
- Align the unit properly, using full shims if necessary.
- Install the eccentric locking collar and tighten using a spanner wrench or hammer and drift.
Timken units are prelubricated with NLGI No. 2 lithium-complex grease, suitable for temperatures from -40°C to 177°C. For extreme conditions, consult a Timken engineer. Proper lubrication is essential to avoid overheating and ensure optimal performance.
Proper maintenance and handling are critical. Overheated bearings can ignite explosive atmospheres, so special care is needed in such environments. Always follow installation and maintenance instructions.
Timken provides two methods for installing housed units: the Axial Drive-Up Method and the Tang Counting Method. The Axial Drive-Up Method is recommended for most applications, while the Tang Counting Method is suitable for less critical applications.
- Clean components and apply a thin oil film.
- Position the open-end cover/seal on the shaft, followed by the adapter sleeve and housed unit.
- Loosely install mounting bolts, check alignment, and use full shims if necessary.
- Install the lockwasher and locknut, leaving a gap of approximately 6.350 mm.
- Use a screwdriver to position the sleeve, tighten the locknut, and measure axial movement.
- Bend a tang on the lockwasher to secure the locknut.
- Tighten the mounting bolts.
- Similar initial steps as the Axial Drive-Up Method.
- Note the tang alignment with the locknut slot and tighten the locknut according to Table C-33.
- Bend a tang on the lockwasher to secure the locknut.
Timken housed units are prelubricated with NLGI No. 2 lithium-complex grease, suitable for temperatures from -40°C to 177°C. Relubrication should be done with compatible grease, especially under extreme conditions. Proper lubrication affects operating temperature and bearing life.
Table C-34 provides suggested starting points for relubrication intervals based on RPM and temperature. Adjustments should be made based on specific application conditions.
- For converting from expansion to fixed, tighten the retaining nut and set screw.
- For converting from fixed to expansion, loosen the retaining nut and set screw, ensuring correct orientation for floating direction.
Timken offers various locking styles and housing styles for spherical roller bearing solid-block housed units, suitable for harsh environments.
This document provides detailed information on Timken's spherical roller bearing solid-block housed units, focusing on their specifications, seal types, locking styles, and ordering procedures.
The bearings are available in both inch and metric sizes, with series 222XX and 232XX for specific applications. The units are made of cast steel for enhanced strength and feature a double-row, spherical roller bearing design for high load capacity and misalignment tolerance.
Various seal options are available, including:
- M Seal: Triple-lip nitrile rubber for moist and dirty environments.
- N Seal: Triple-lip DuPont™ Viton® for chemical resistance and higher temperatures.
- O Seal: Triple-lip urethane for abrasion resistance.
- B Seal: Double-lip nitrile rubber for oil lubrication and extreme conditions.
- C Seal: Double-lip Viton for chemical and abrasion resistance.
- T Seal: DuPont™ Teflon® labyrinth for non-contacting, high-speed applications.
The document outlines several locking styles, including concentric lock (CA), eccentric lock (CJ), V-Lock (CV), and tapered adapter lock (CK).
To order the correct unit, determine the appropriate locking style, housing, and seal options. Part numbers can be found in the catalog tables, or assistance can be sought from a Timken engineer.
Primary seals are installed between the bearing's inner ring and housing, available in contacting or non-contacting types. Secondary seals provide additional protection, with options like steel and urethane covers, and various seal types for different speed and contamination conditions.
The document includes detailed tables of steel cover dimensions for various shaft diameters and bearing numbers, ensuring compatibility with specific applications.
- Specifications: The catalog provides detailed specifications for each bearing unit, including part numbers, shaft diameters, and dimensions (A, B, C, D, etc.). It distinguishes between single-collar (QA) and double-collar (QAA) units, with specific dimensions for each type.
- Procedures: The document outlines the use of specific dimensions (SA, RA for single-collar and SAA, RAA for double-collar units) for proper installation and maintenance of the bearing units.
- Standards and Tolerances: It specifies pilot tolerances and housing configurations, such as six-bolt housing for certain units, ensuring compatibility and performance standards are met.
- Recommendations: Recommendations for selecting the appropriate bearing unit based on shaft diameter and application requirements are provided, ensuring optimal performance and longevity.
- Specifications: Each bearing model is listed with its part number, shaft diameter, and bearing number. Detailed dimensions are provided, including measurements for A, B, C, D (min and max), E, F, G, H, J, K, L, M, R, S, and weight in both kilograms and pounds.
- Product Variants: The catalog covers multiple series within the EC Series, such as the qmPR, qmPH/qmPG, qmPX, qmPXT, qmSN, qmC, and qmCW series. Each series has specific design features and applications.
- Design Features: The document highlights the design elements of each series, such as the number of bolts (two-bolt or four-bolt designs), metric or imperial measurements, and specific styles like SN-style or SAF-style blocks.
- Applications: These housed units are designed for use in various industrial applications where robust and reliable bearing support is required.
Catalog excerpts
Timken® Spherical Roller Bearing Solid-Block Housed Units
Open the catalog to page 1
TIMKEN® HOUSED UNIT CATALOG INDEX OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SHELF LIFE POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Ball Bearing Housed Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 Tapered Roller Bearing Type E Housed Units. . . . . . . . . . . . . . . . . B-1 Spherical Roller Bearing Solid-Block Housed Units. . . . . . . . . . . C-1 Timken®...
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 rail bearings, steel for an aircraft engine shaft, or...
Open the catalog to page 4
TIMKEN OVERVIEW INCREASE YOUR EQUIPMENT UPTIME In addition to high-quality bearings, engineered steel and mechanical power transmission components, we provide valuable integrated products and services. For example, we offer repair services and equipment monitoring equipment that can alert you to problems before they impact your uptime. Additionally, we offer a broad selection of seals, premium lubricants, lubricators, couplings and chain to keep your operations moving smoothly. Our 10 technology centers in the United States, Europe and Asia help pioneer tomorrow’s innovations with extensive basic...
Open the catalog to page 5
INTRODUCTION HOUSED UNIT OVERVIEW RUGGED TIMKEN® HOUSED UNITS HELP PROTECT YOUR BEARINGS When you choose sturdy Timken housings, your bearings can keep rolling smoothly, even in harsh environments impacted by dirt, debris, water and other contaminants. Timken engineers designed special housings to withstand tough challenges on the job. Protected inside durable cast iron or steel, our highly engineered Timken® ball and roller bearings work hard to help you manufacture and transport materials, without excessive maintenance due to contaminants. Choose from our selection of housed units designed...
Open the catalog to page 6
INTRODUCTION HOUSED UNIT OVERVIEW TIMKEN® BALL HOUSED UNITS OFFER EASY INSTALLATION, FLEXIBLE OPTIONS Timken® ball housed units, available in a variety of sizes and types, feature wide-inner-ring ball bearings that provide additional shaft support and locking options. The Timken® wide-inner-ring ball bearing is designed for straight shafts and can be positioned without shoulders, locknuts or adapters. For easy installation, our ball housed units can be ordered pre-assembled with bearings, housings, seals and locking systems. Choose from pillow blocks, flanged cartridges, take-up units and cylindrical...
Open the catalog to page 7
INTRODUCTION HOUSED UNIT OVERVIEW TIMKEN® TYPE E HOUSED UNITS REPEL CONTAMINANTS, ENHANCE PERFORMANCE Timken® Type E tapered roller bearing housed units feature double-lip seals and locking collars that protect against water and other contaminants. This double-lip seal design blocks debris and retains grease better than single-lip or triple-lip seals, according to Timken 2012 laboratory tests. Its cast-iron exterior includes a corrosion-resistant electro-coat finish for the housing and collar, a more durable shield than industry-standard powder coating or black oxide. Set screws with nylon patches...
Open the catalog to page 8
INTRODUCTION HOUSED UNIT OVERVIEW TIMKEN® SPHERICAL ROLLER BEARING SOLID-BLOCK HOUSED UNITS WITHSTAND HARSH CONDITIONS Timken® spherical roller bearing solid-block housed units stand up to rugged conditions. Composed of solid steel, they withstand most falling debris and handle up to ±1.5 degrees of misalignment. The steel used in these products is up to two times stronger than cast iron, which may break or pound out in tough applications. Timken spherical roller bearing solid-block housed units come in five locking configurations: single and double set screws, eccentric locks for reversing applications,...
Open the catalog to page 9
INTRODUCTION HOUSED UNIT OVERVIEW TIMKEN® SAF SPLIT-BLOCK HOUSED UNITS BEAR HEAVY LOADS Timken® SAF split-block housed units are available in rugged cast iron, ductile iron or cast steel to match a range of industrial environments. Our Timken SAF housed units have separate, matched caps and bases. In larger sizes where housed units are heavier, this split-block design eases installation. Remove the cap using a pry-tool slot for bearing inspection, service and replacement. Available in a variety of shaft sizes, Timken SAF units offer the choice of tapered-bore design for easy mounting or a straight-bore...
Open the catalog to page 10
INTRODUCTION HOUSED UNIT OVERVIEW TIMKEN® SNT SPLIT PLUMMER BLOCKS CARRY HEAVY LOADS Timken® SNT split plummer blocks are available in metric sizes. Their rugged cast iron, ductile iron or cast steel designs stand up to a range of industrial environments. Our Timken SNT plummer blocks have separate, matched caps and bases. In larger sizes where plummer blocks are heavier, this split-block design eases installation. Remove the cap using a pry-tool slot for bearing inspection, service and replacement. Available in a variety of metric shaft sizes, Timken SNT plummer block units offer the choice...
Open the catalog to page 11
TIMKEN HOW TO USE THIS CATALOG HOW TO USE THIS CATALOG We designed this catalog to help you find the Timken housed units best suited to your specifications. Timken offers an extensive range of bearings and accessories in both imperial and metric sizes. For your convenience, size ranges are indicated in millimeters and inches. Contact your Timken engineer to learn more about our complete line for the special needs of your application. This publication contains dimensions, tolerances and load ratings, as well as engineering sections describing fitting practices for shafts and housings, internal...
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