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TIMKEN
Ball Housed Units

Ball Housed Units

Product catalog summary

Overview
Timken offers a comprehensive range of products and services aimed at enhancing productivity and uptime across various industries. Their offerings include drive train kits, durable housings, couplings, repair services, and steel components. Timken emphasizes collaboration with clients to improve global business operations.

Increase Your Equipment Uptime
Timken provides high-quality bearings, engineered steel, and mechanical power transmission components. They offer integrated products and services, including repair services and equipment monitoring, to prevent downtime. Their technology centers focus on innovation and expanding their portfolio.

Rugged Timken Housed Units
Timken's housed units protect bearings in harsh environments. They offer a selection of housed units with ball, tapered, and spherical bearings, along with enhancements like seals and lubricants. These units conform to industry standards for easy interchangeability.

Introduction to Housed Units
Timken ball housed units are easy to install and offer flexible options. They feature wide-inner-ring ball bearings for additional shaft support. Various locking options and materials are available, including Timken Shaft Guarding Technology to prevent shaft damage.

Timken Type E Housed Units
These units feature double-lip seals and locking collars to protect against contaminants. They have a corrosion-resistant finish and advanced technology for longer bearing life. Typical applications include pulp and paper, power generation, and mining.

Timken Spherical Roller Bearing Solid-Block Housed Units
Designed for harsh conditions, these units are made of solid steel and offer multiple locking and sealing options. They are suitable for industries like metals mills, mining, and agriculture.

Timken SAF Split-Block Housed Units
Available in cast iron, ductile iron, or cast steel, these units are designed for heavy loads and ease of installation. They offer various sealing options and are used in industries such as power generation and mining.

Timken SNT Split Plummer Blocks
These blocks are available in metric sizes and are designed for heavy loads. They offer multiple sealing options and are used in industries like power generation and food processing.

How to Use This Catalog
The catalog provides dimensions, tolerances, and load ratings, along with engineering sections for fitting practices. It is updated periodically, and users are advised to consult Timken engineers for specific needs.

Shelf Life and Storage
Timken provides guidelines for the shelf life of grease-lubricated bearings and components. Shelf life is distinct from design life and is affected by various factors. Timken is not responsible for the shelf life of bearings lubricated by other parties. Storage guidelines include keeping products in original packaging and avoiding damage to packaging.

Shelf Life and Storage Guidelines
Timken provides specific guidelines for the storage of grease-lubricated bearings and components. Products should not be used beyond their defined shelf life. Storage conditions should maintain temperatures between 0°C (32°F) and 40°C (104°F) with humidity below 60%. The area should be free from contaminants and vibrations.

Handling and Maintenance Warnings
Proper handling and maintenance are crucial to avoid equipment failure. Excessive force should not be used during mounting or dismounting. Follow all manufacturer guidelines for installation and maintenance. Bearings should not be operated above 121°C (250°F) to prevent risks of ignition in explosive atmospheres.

Ball Bearing Housed Units
Timken's ball bearing housed units are designed for various industrial applications, featuring a wide-inner-ring ball bearing for additional shaft support. The use of Shaft Guarding Technology™ is recommended to prevent shaft damage. These units are suitable for industries such as agriculture, food processing, and conveyors.

Engineering Considerations
Antifriction bearings are suitable for a range of speeds and load combinations. Environmental factors like temperature and moisture can affect performance. For complex applications, consultation with a Timken engineer is advised.

Materials and Temperature Resistance
Materials used in bearings must withstand various operating environments. Timken provides a table of suggested materials for rings, balls, and rollers, detailing their chemical composition and temperature limits. The TDC™ coating offers excellent corrosion resistance and extended bearing life.

Corrosion Resistance and Coatings
Timken's TDC™ coating provides high hardness and reduced friction, enhancing wear resistance and bearing life. Special coatings are available for applications requiring FDA and USDA compliance.

Internal Clearance
Radial internal clearance is crucial for bearing performance, especially under varying temperature conditions. Bearings with greater internal looseness may be necessary to accommodate thermal expansion.

Radial Ball Bearings
The internal clearance of radial contact ball bearings is crucial for absorbing the effects of press fitting during mounting and compensating for thermal expansion. It is measured radially, as prescribed by the American Bearing Manufacturers Association (ABMA), by moving the outer ring horizontally. Table A-2 provides the limits for radial internal clearance for single-row radial contact ball bearings under no load, with tolerances specified in micrometers and ten-thousandths of an inch.

Cages
Cages in ball bearings prevent rolling-element contact and wear, maintaining spacing within the races. Timken offers pressed-steel welded cages and molded-nylon finger-type cages. Pressed-steel cages are suitable for high-temperature applications but do not accommodate misalignment. Molded-nylon cages, made from heat-stabilized nylon 6/6, can withstand temperatures up to 120°C and accommodate misalignment, but caution is advised with aggressive lubricants at high temperatures.

Lubrication
Proper lubrication is essential for bearing performance. Viscosity is a critical property, with a minimum of 100 SUS recommended for normal lubrication. The maximum operating speed of a bearing is influenced by temperature and lubrication type. Table A-4 provides maximum operating speed recommendations for various Timken series. Timken lubricants are designed for high-temperature, anti-wear, and water-resistant applications, with specific guidelines for relubrication intervals based on service conditions.

Lubrication Systems
Timken offers single-point and centralized multi-point lubricators, such as G-Power, M-Power, and C-Power, to deliver periodic grease to bearings and other components. These systems can be filled with Timken-formulated or commercial lubricants and come with various accessories for installation in hard-to-reach locations.

Timken Ball-Bearing Pillow-Block Grease
Timken ball-bearing pillow-block grease is an NLGI No. 2 polyurea-thickened grease designed for long life and high-temperature lubrication in ball bearings. It offers mechanical shear stability and corrosion resistance, even in saltwater environments. The grease is suitable for lightly loaded ball bearings in high-temperature settings such as kilns, glassworks, electric motors, and chemical manufacturing. It operates effectively between -40°C to 163°C (-40°F to 400°F) and is known for low-noise characteristics and excellent pumpability.

SAL/SAOL Lubrication
SAL/SAOL housed units are designed for oil lubrication, featuring a filler cup and an overflow cup to manage oil levels. Proper placement of the overflow cup is crucial to prevent leaks. Inspection and refilling should occur when the shaft is stationary, with oil levels maintained at the top of the overflow cup. High-quality automotive or turbine oil with oxidation inhibitors is recommended, with SAE 30 weight oil suitable for normal conditions.

General Relubrication Suggestions
Periodic relubrication is advised due to the nature of food-grade grease and corrosive environments. Refer to equipment manuals for specific relubrication cycles, with general guidelines available in table A-7.

Ball Bearing Housed Units - Load Ratings and Life Calculations
Load ratings are based on ABMA standards but are enhanced for improved materials and processing. The document provides formulas for calculating radial ball-bearing load ratings, life factors, and fatigue life. Key notations include radial load rating (CN), extended basic dynamic load rating (CE), and life-adjustment factors (a1, a2, a3). Table A-8 lists required Y factors for dynamic equivalent radial loads.

Frequency Coefficients
Table A-9 provides frequency coefficients for wide-inner-ring ball bearings, essential for predictive maintenance. Frequencies are expressed as orders and can be converted to Hz by multiplying by the rotating speed in revolutions per second.

Mounting and Shaft Tolerances
Table A-10 outlines recommended shaft tolerances and mounting data for wide-inner-ring ball bearings. Proper fit is crucial for optimal performance, with specific tolerances provided for different shaft diameters.

Overview
The document is a technical catalog from Timken, focusing on ball bearing housed units. It provides detailed specifications, engineering guidelines, and installation procedures for various series of bearings.

Specifications
The catalog lists multiple series of bearings, including KR-KRR, G-KRR, RA-RR, and GRA-RR. Each series has specific dimensions for shaft diameter, outer-ring size, housing bore, and shoulder diameter. The document includes tables with precise measurements in both inches and millimeters, highlighting maximum and minimum values for each parameter.

Engineering and Mounting
The document emphasizes the importance of selecting the correct shaft fit for optimal bearing performance. It discusses the use of slip fits and press fits, and provides recommended values for shaft limits. Special requirements should be discussed with a Timken engineer.

Installation Procedures
The catalog outlines step-by-step instructions for installing ball bearing housed units. Key steps include ensuring the shaft is clean and of proper diameter, aligning the bearing in its housing, and securing the unit with bolts. Two locking methods are described: eccentric locking-collar bearings and set screw locking bearings. For high-speed or high-temperature applications, additional steps are provided, such as handling gaskets and packings carefully and ensuring proper positioning of the overflow cup.

Key Recommendations
- Use flat washers of appropriate size when installing housed units. - For eccentric locking-collar bearings, ensure the collar is forced against the inner ring by thrust. - For high-speed or high-temperature bearings, position the fixed bearing closest to the drive position.

Additional Notes
The document references specific pages in the Timken Engineering Manual for further details on housing bore dimensions and outer ring tolerances. It also provides links to download 3D models and 2D drawings from the Timken website.

Overview
The document is a technical guide from the TIMKEN® Housed Unit Catalog, focusing on ball bearing housed units. It includes specifications, installation procedures, and selection guides for various bearing types and applications.

Warnings and Safety
Proper maintenance and handling are critical to avoid risks of injury or equipment failure. Always follow installation instructions and maintain proper lubrication. Use appropriate tools and personal protective equipment when handling bearings.

Specifications

Shaft Tolerance: Suggested tolerances for shaft sizes range from nominal to -0.0005 in. for smaller shafts to -0.0015 in. for larger shafts, with adjustments for heavy loads or high speeds.
Set Screw and Bolt Torque: Tables provide recommended tightening torques for set screws and bolts, varying by size and material.

Technical Data
This section provides installation details related to shaft tolerance and torque for set screws and bolts, emphasizing the importance of correct installation to ensure optimal performance.

Selection Guide
A comprehensive guide for selecting ball-bearing housed units based on load, bearing type, and housing type. It includes recommendations for light, normal, and heavy-duty applications.

Wide-Inner-Ring Ball Bearings

These bearings are designed for ease of mounting and maximum shaft support, available in various locking systems and sizes.
Applications include agriculture, food processing, and conveyors.

Nomenclature
The document explains the naming conventions for different bearing series, including prefixes and suffixes that denote specific features and construction types.

Installation Instructions
Detailed instructions for installing self-locking collars, which simplify the installation process by eliminating the need for additional components like locknuts and washers.

Conclusion
The document serves as a comprehensive resource for selecting and installing TIMKEN® ball bearing housed units, emphasizing safety, proper installation, and maintenance practices to ensure longevity and performance.

Introduction
The document provides detailed technical specifications and installation procedures for Timken's wide-inner-ring ball bearings, specifically focusing on the Y, YA, and ER series. These bearings are designed for various industrial applications, including HVAC systems, conveyors, and more.

Specifications

Y Series: Features full-width inner rings, superfinished raceways, grade-10 balls, and anti-backout nylon-patch set screws. They are factory-prelubricated and suitable for reversing applications.
YA Series: Extended inner-ring type with specially designed set screws and positive-contact R-seals for protection against contaminants.
ER Series: Offers industry-standard mounting dimensions, equipped with snap rings, and features a unique set screw locking device resistant to loosening.

Installation Procedure
The installation involves mating the cam of the collar with the cam of the wide inner ring, pressing the locking collar against the wide inner ring, and turning in the direction of shaft rotation until tightly engaged. A set screw in the collar provides supplementary locking.

Shaft Guarding Technology™
This technology uses a stainless-steel band to transfer gripping pressure on the shaft, preventing damage and reducing the need for shaft replacements. It is designed to exceed gripping application requirements and reduce fretting corrosion.

Industrial Series Bearings

KR, KRR, KRRB: Non-relubricatable types designed for dirty or wet conditions, featuring R-seals and shroud-seals for extra protection.
G-KRR, G-KRRB: Relubricatable types with similar features to the RR series, designed for extremely dirty or wet conditions.

Applications
These bearings are suitable for a wide range of industries, including agriculture, forest products, industrial machinery, food processing, and more.

Conclusion
The document provides comprehensive information on the specifications, installation, and applications of Timken's wide-inner-ring ball bearings, emphasizing their durability and suitability for various industrial environments.

Overview
The document is a section of the TIMKEN® Housed Unit Catalog, focusing on ball bearing housed units. It provides detailed specifications, types, and ordering information for various series of bearings, including GRA-RR, RA-DD, YA-RR, GYA-RR, and RAL-NPPB.

Specifications
The catalog details different series of bearings, each with specific features:

GRA-RR and GRA-RRB: These are relubricatable types with cylindrical and spherical outside diameters, respectively. They include provisions for relubrication and are available in various sizes with specific shaft tolerances.
RA-DD: Non-relubricatable bearings with extended inner-ring and self-locking collars. They feature non-contact grease shields for improved performance and are factory-prelubricated.
YA-RR and YA-RRB: Non-relubricatable types with extended inner-ring and specially designed set screws. They offer improved protection against contaminants and are available in cylindrical and spherical outside diameters.
GYA-RR and GYA-RRB: Relubricatable types interchangeable with YA-RR series, available in cylindrical and spherical outside diameters for unrestricted initial alignment.
RAL-NPPB: Light series bearings for lightly loaded applications, featuring self-locking collars and prelubricated with R-seal for lubricant retention.

Key Parameters
Each bearing type is detailed with parameters such as shaft diameter, outer diameter, ring widths, static and dynamic load ratings, and weight. Suggested shaft tolerances are provided for each series.

Ordering Information
To order, specify the bearing number followed by "+ COL". Example: GRA100RRB + COL.

Notes
The document includes notes on bore tolerance and specific details about spherical outer-ring widths for certain models.

Overview
This document is a technical catalog from Timken, detailing various series of wide-inner-ring ball bearings and housed units. It includes specifications, ordering information, and suggested shaft tolerances for different bearing series.

Specifications
The catalog provides detailed specifications for each bearing series, including dimensions, load ratings, and weight. For example, the GYM-KRRB series is designed for medium-duty applications with features like a full-width inner ring and a three-piece seal for protection against contamination.

Ordering Information
To order, specify the bearing number followed by "+ COL". For example, "RAL100NPPB + COL". Some bearings are available with cylindrical outer diameters, indicated by deleting the suffix 'B'.

Series Details

Light Series (RAL-NPPB): Designed for light-duty applications.
Medium Series (GYM-KRRB): Features extended bearing life and superior holding power with nylon-patch set screws.
Heavy Series (GN-KRRB): Suitable for heavy or shock loads, with a thicker sealing member and complete lubricant retention.
Special Duty (GN-KLLB): Similar to standard LL series but with a heavier section and a three-piece seal construction.
SMN A and B Types/MUOA-B Inserts: These have the same ring tolerances as 300-series single-row radial ball bearings, with type A having cylindrical O.D. and type B having spherical O.D.

Key Features
The document highlights features such as extended bearing life, protection against contamination, and superior holding power in applications with severe vibration. It also provides suggested shaft tolerances for different bearing sizes.

Tables and Data
The catalog includes extensive tables listing bearing numbers, dimensions, load ratings, and other critical specifications. These tables are essential for selecting the appropriate bearing for specific applications.

Conclusion
This catalog serves as a comprehensive guide for selecting Timken wide-inner-ring ball bearings and housed units, providing all necessary specifications and ordering information.

Introduction
Ball bearing housed units are designed to accommodate a wide range of operating conditions. These units typically feature cast-iron housings and are mounted on straight shafts with a slip fit. They include self-locking collars and set screw inner-bearing designs for easier mounting. Various series are available with concentric locking collars, and most units have a self-aligning feature. Units with prelubricated wide-inner-ring ball bearings may be supplied without grease fittings.

Types of Housed Units

Pillow Blocks: Provide shaft support where the mounting surface is parallel to the shaft axis. Available in narrow and premium width series for different load capacities.
Flanged Cartridges: Used where a shaft passes through the machine frame at a right angle. Available in standard and heavy-duty series.
Cylindrical Cartridges: Provide shaft support where the shaft axis is perpendicular to a machined housing. Suitable for low-cost, light-duty applications.
Take-up Units: Used for shaft adjustment and belt-tightening in conveyor applications. Available in cast-iron and pressed steel for different duty applications.

Features and Benefits

Powder-Coat Finish: Reduces chipping and corrosion.
Nylon-Patch Set Screw: Increases bearing life by reducing the potential of backing out due to vibration.
Seal Curl: Secures mechanical attachment of the seal, resisting pop-out during relubrication.
Superfinished Raceways: Reduces friction for cooler, quieter running and longer life.
Double-Filtered Polyurea Grease: Improves lubrication cleanliness for excellent performance at higher speeds.

Installation Procedures

Self-Locking Collar Installation: Facilitates the mounting of wide-inner-ring ball bearings without the need for additional components like locknuts or washers.
Concentric Collar Installation: Simplifies installation with pre-assembled collars.
Set Screw Locking Bearing: Involves tightening inner ring set screws to specified torque values for secure mounting.

Specifications
Detailed specifications for various unit types, including dimensions, load ratings, and suggested shaft tolerances, are provided. Units are available in different configurations to suit specific industrial applications, with options for different seal types and materials.

Overview
The document provides detailed specifications and ordering information for various Timken housed unit series, including medium-duty, heavy-duty, and industrial series. These units are designed for specific applications such as conveyors, fans, blowers, and grain handling.

Medium-Duty Pillow Blocks
The YASM medium-duty pillow blocks feature GYM-KRRB bearing inserts and are suitable for applications like conveyors and sawmills. They have durable, powder-coated cast-iron housings that resist corrosion and weather exposure. Suggested shaft tolerances range from 1 inch to 3 inches.

STB Series
These two-bolt housed units are compact and ideal for limited space applications. They come pre-assembled with GYA-RRB bearings and are factory-prelubricated. Shaft diameters range from 3/4 inch to 1 15/16 inches.

VTB Series
Similar to the STB series but with GRA-RRB bearings and locking collars. They are also pre-assembled and ready for mounting. Shaft diameters range from 3/4 inch to 2 inches.

RAO, LAO Heavy Series
These are heavy-duty ball bearing housed units designed for high-capacity applications. They feature self-locking collars for easy mounting and are suitable for wet or dirty conditions. Shaft diameters range from 1 3/16 inches to 2 15/16 inches.

RSA, LSA Industrial Series
Equipped with wide inner ring ball bearings, these units are prelubricated and ready for use. They include a self-locking collar and are suitable for shaft diameters from 1/2 inch to 3 15/16 inches.

RSAO, LSAO Heavy Series
Designed for heavy loads and shock conditions, these units are prelubricated and include a grease fitting for relubrication. They are suitable for shaft diameters from 1 3/16 inches to 3 15/16 inches.

Ordering Information
To order any unit, specify the unit type and shaft diameter. Examples are provided for each series.

Overview
The document is a technical catalog from Timken, detailing specifications and ordering information for various types of ball bearing housed units, specifically focusing on cast-iron flanged units in the RCJ, TCJ, LCJ, RCJC, YCJ, and VCJ series.

Specifications

RCJ, TCJ, LCJ Series: These units are designed for minimal machining and come pre-assembled with bolts through the flange. They feature wide-inner-ring ball bearings that are self-aligning to compensate for shaft misalignment. Different seal types are used for different series (e.g., G-KRRB for RCJ, G-KPPB for TCJ, and G-KLLB for LCJ).
RCJC Series: Similar to the RCJ series but uses a concentric collar for shaft locking. Equipped with GC-KRRB bearings, these units provide initial self-alignment and are interchangeable with RCJ series in terms of bolt-hole spacing.
YCJ Series: Incorporates Shaft Guarding Technology with set screws as the locking device. These units are equipped with GY-KRRB bearings and are designed for easy interchangeability with RCJ series.
VCJ Series: These flange cartridges are ready for mounting with minimal machining required. They are assembled with GRA-RRB bearings and self-locking collars.

Ordering Information
To order, specify the unit type and shaft diameter. Example: RCJ 1 3/16 in.

Additional Features

All units are factory-prelubricated with provisions for relubrication.
Safety end caps are available for selected sizes.
Suggested shaft tolerances are provided for different shaft diameter ranges.

Data Tables
The document includes detailed tables listing dimensions, load ratings, and part numbers for each unit type, providing essential data for selection and application.

Overview
The document provides detailed specifications and ordering information for various series of ball bearing housed units, specifically focusing on the VCJ, SCJ, RCJO, LCJO, YCJM, and YCJTM series. These units are designed for different industrial applications, offering features such as pre-lubrication, relubrication fittings, and specific shaft tolerances.

VCJ Standard Series
This series includes factory-prelubricated units with optional safety end caps. Suggested shaft tolerances range from 1/2 in. to 2 3/16 in. The document provides a detailed table of dimensions and load ratings for various unit sizes, including bearing, collar, and housing numbers.

SCJ Standard Series
Similar to the VCJ series, these units are prelubricated and come with a grease fitting for relubrication. They are ideal for applications requiring minimal shaft length. The document lists dimensions and load ratings for different unit sizes.

RCJO and LCJO Heavy Series
These units are designed for heavy-duty applications and come with self-locking collars. They are dimensionally interchangeable and prelubricated. The document specifies shaft tolerances and provides a table of dimensions and load ratings.

YCJM Medium Duty Series
This series features four-bolt flanged cartridges with GYM-KRRB bearing inserts, suitable for conveyor and fan applications. The units are powder-coated for durability and corrosion resistance. Shaft tolerances and ordering information are provided.

YCJTM Medium Duty Series
Similar to the YCJM series, these units are designed for medium-duty applications with two-bolt flanged cartridges. They offer premium features to extend bearing life and are interchangeable with competitive designs.

Key Specifications
Across all series, the document emphasizes the importance of specifying the unit and shaft diameter when ordering. It also highlights the availability of downloadable 3D models and 2D drawings for these units.

Overview
The document is a technical catalog from Timken, detailing various series of ball bearing housed units, specifically focusing on cast-iron flanged units. It includes specifications, dimensions, load ratings, and ordering information for different series such as RCJT, TCJT, LCJT, RCJTC, VCJT, and YCJT.

Specifications
Each series is described with specific design features, such as the number of bolt holes, type of bearings used, and shaft-locking mechanisms. The document provides detailed dimensions and load ratings for each unit, along with suggested shaft tolerances.

Procedures
The catalog outlines the ordering process, specifying the need to mention the unit and shaft diameter. It also highlights the availability of factory-prelubricated units and the provision of grease fittings for relubrication.

Norms and Recommendations
Safety end caps are recommended for selected sizes, and specific shaft tolerances are suggested for optimal performance. The document emphasizes the importance of specifying the correct unit and shaft diameter when ordering.

Key Data from Tables
The tables provide detailed measurements in both inches and millimeters for various dimensions such as shaft diameter, bolt hole size, and unit weight. They also list the bearing, collar, and housing numbers for each unit.

Critical Information
The document highlights the importance of selecting the correct series based on application needs, such as mounting area restrictions and shaft protection requirements. It also notes the interchangeability of bolt-hole spacing with competitive units for certain series.

Overview
The document provides detailed specifications and data for various series of ball bearing housed units, including SCJT, FLCT, RFC, RC, and GVFD/GVFDR. These units are designed for different applications, offering features like self-alignment, prelubrication, and specific mounting configurations.

SCJT Series
This series is characterized by its two-bolt mounting system and is equipped with GYA-RRB bearings. It includes positive-contact, land-riding seals, and set screw locking. The units are factory-prelubricated with a grease fitting for relubrication. Suggested shaft tolerances range from 1/2 inch to 2 3/16 inches.

FLCT Series
These units are designed for space-saving applications with a flush mount against the frame. They feature RA-RRB extended inner ring ball bearings and are permanently prelubricated. Suggested shaft tolerances are provided for ordering.

RFC Series
The RFC series is suitable for heavy load applications and features piloted flange cartridges for accurate mounting. It includes R-seal bearings with a concentric-locking collar and is factory-prelubricated. Suggested shaft tolerances are specified for ordering.

RC Series
This series is designed for straight-bore housings and includes a self-locking collar with a spherical outside diameter for self-alignment. It is equipped with G-KRRB bearings and provides suggested housing bore and shaft tolerances.

GVFD/GVFDR Series
These malleable-iron flanged units provide self-alignment and rigid support for medium-duty applications. They are available in relubricatable and non-relubricatable versions, with interchangeable mounting bolt holes. Suggested shaft tolerances are provided for ordering.

Key Data Tables
The document includes detailed tables listing unit bearing numbers, dimensions, load ratings, and other specifications for each series. These tables are essential for selecting the appropriate unit based on specific application requirements.

Overview
The document is a technical catalog from Timken, detailing various ball bearing housed units, including the PB, RPB, VFMST, LFST, RR, and RA series. These units are designed for light-duty applications and feature different housing and bearing configurations.

PB and RPB Series

The PB series offers economical ball bearings for light-duty applications, featuring a two-piece separable zinc-plated steel housing with a spherical bearing seat for self-alignment.
The RPB series is similar but includes a thick, electrically conductive rubber inner liner for quiet operation.
Both series come prelubricated and have specific shaft tolerances.

VFMST Series

This series includes zinc-plated, pressed-metal flange units with prelubricated bearings, ideal for light-duty applications.
Features include flush-mounting and additional contamination protection.

LFST Series

These units are zinc-plated, pressed-steel, and flush-mounted, simplifying bearing flange-unit installations.
They feature a conductive rubber interliner for noise and vibration reduction.

RR and RA Flangette Units

Both units consist of interchangeable, pressed-steel, zinc-plated flanges housing a standard bearing with a self-locking collar.
The RA unit is similar to the RR unit but includes an extended inner-ring bearing.

Specifications and Ordering

Each series has specific dimensions, load ratings, and suggested shaft tolerances.
Ordering requires specifying the unit and shaft diameter.

Key Notes

Housing thrust ratings are a fraction of radial load ratings, and maximum suggested speed is 2400 RPM.
Units should not be mounted vertically or upside down.

Overview
This document is a technical catalog from Timken, detailing specifications and ordering information for ball bearing housed units, specifically pressed-steel flangette units. It includes various models such as RA, RAT, RRT, RATR, and RRTR series, with detailed dimensions, load ratings, and ordering instructions.

Specifications
The catalog provides detailed specifications for each bearing unit, including shaft diameter, bolt size, radial load ratings, and dimensions for short and long shanks. It also specifies the necessary tolerances for shaft diameters, which range from 1/2 inch to 2 3/16 inches, with specific nominal and negative tolerances.

Procedures
To order a unit, the catalog instructs to specify the unit type and shaft diameter. For example, ordering a flangette requires specifying the model and the shaft diameter, such as 'RA 1 in. flangette'.

Standards and Recommendations
The document notes that stampings must be ordered in pairs to assemble bearings, and thrust ratings for stampings are 50% of radial ratings. It also highlights that shaft diameters with an 'S' indicate a smaller housing.

Key Data from Tables
The tables provide comprehensive data on each unit's dimensions and load ratings. For instance, the RA 1 1/2 unit has a radial load rating of 7500 N and a weight of 1.447 kg. The tables also include dimensions for bolt holes, flange holes, and other critical measurements necessary for installation.

Additional Notes
The catalog mentions that these units are designed for installations where standard three-bolt flangettes cannot be used due to space limitations. It also notes that all units are non-relubricatable, except for specific zinc-plated units designed for relubrication in environments with excessive moisture and contamination.

Overview
The document is a technical catalog for Timken's ball bearing housed units, specifically focusing on the Survivor PS and PT series. These units are designed for environments requiring high corrosion resistance, such as food processing and other industries with stringent hygiene standards.

Specifications
The catalog provides detailed specifications for various models, including shaft diameter, static load rating, limiting speed, and bearing numbers. The units are available in different configurations, such as high-base and low-base pillow blocks, and flanged cartridges.

Materials and Design
The units feature a 300-series stainless-steel insert for maximum corrosion resistance. The housing is made of a durable, corrosion-proof polymer that withstands a wide range of chemicals, acids, and alkalis. It can operate continuously at temperatures up to 121°C (250°F) and briefly up to 160°C (320°F).

Features
Key features include stainless-steel set screws, crush bushings, and grease fittings. The design ensures no voids in the base where bacteria can collect, making it suitable for food processing environments. The units are factory lubricated with FDA/USDA-approved grease.

Applications
These units are suitable for light loads and low-speed applications, particularly in food handling, dairy, refrigeration, HVAC, and other corrosive environments. The PT series is noted for its dimensional stability and resistance to premature failure under corrosive conditions.

Ordering Information
The document provides part numbers for ordering, with examples given for both the PS and PT series. The PT series can be ordered by adding the PT suffix to existing cast-iron housed-unit designations.

Overview
The document provides detailed specifications and features of Timken's Ball Bearing Housed Units, specifically focusing on the Survivor PT Series, including YTB, YFB, RAK/S, RCJ, RCJT, RTB, and NT Series. These units are designed for applications requiring corrosion resistance and durability, particularly in food and beverage industries, materials handling, and other corrosive environments.

Specifications
The document lists various models with their respective shaft diameters, static and dynamic load ratings, speed ratings, and bearing numbers. For example, the YTB and YFB series are highlighted for their corrosion-proof polymer housing and stainless-steel components, suitable for temperatures up to 121°C (250°F) continuously and 160°C (320°F) briefly.

Features
Key features across the series include:

Corrosion-resistant polymer housing with stainless-steel components.
Industrial-duty contact seals with stainless-steel shroud caps.
Factory lubrication with FDA/USDA-approved grease for incidental food contact.
Stainless-steel set screws with Shaft Guarding Technology to prevent shaft damage.

Series Highlights

YTB and YFB Series: Focus on lighter loads with corrosion protection, featuring a flush base design to prevent bacterial collection.
RAK/S Series: Offers both low-base and high-base options, emphasizing shock load resistance and proper bearing fit.
RCJ and RCJT Series: Designed for lighter loads with a focus on corrosion protection, featuring a stainless-steel lock collar.
NT Series: Provides superior corrosion resistance with nickel-plated housing and stainless-steel components, suitable for the heaviest loads.

Applications
These units are suitable for various industries, including food and beverage, dairy, refrigeration, HVAC, chemical, and maritime applications, where corrosion resistance and durability are critical.

Ordering Information
The document provides guidance on ordering complete assemblies and individual components, emphasizing the availability of different configurations and shaft sizes.

Overview
The document is a technical catalog from Timken, focusing on ball bearing housed units and related components. It provides detailed specifications, replacement procedures, and installation guidelines for various bearing units.

Specifications
The catalog lists multiple bearing units with specific part numbers, dimensions, and features. Key specifications include inner and outer ring types, seal types, and relubrication capabilities. For example, the G-relubricatable units feature a B-spherical outer ring and RR-double R-seal.

Replacement Bearings
The document outlines replacement bearing assemblies, detailing the features and part numbers for each type. It includes examples of how to identify and replace bearings using specific part numbers and configurations.

Machine Units
The catalog describes machine units, which consist of wide-inner-ring ball bearings with sealing caps and collars. These units are available in standard (SM) and heavy (SMN) series, with A-type and B-type configurations.

Safety End Caps
Timken offers safety end caps designed to protect exposed rotating shafts. The installation process involves attaching an adhesive-backed mounting ring and snapping the end cap into place. The kits are available for various shaft sizes and housing styles.

Ordering Information
The document provides a table with ordering information for safety end cap kits, specifying the shaft sizes and compatible housed units.

Conclusion
This catalog serves as a comprehensive guide for selecting, replacing, and installing Timken ball bearing housed units and accessories, emphasizing safety and compatibility across different equipment types.

Catalog excerpts

Timken® Ball Bearing Housed Unit Catalog

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TIMKEN® HOUSED UNIT CATALOG INDEX OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 SHELF LIFE POLICY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Ball Bearing Housed Units. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 TIMKEN® HOUSED UNIT CATALOG • Download 3D Models and 2D Drawings at cad.timken.com

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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...

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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...

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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...

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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...

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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...

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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,...

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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...

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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...

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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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Ball Housed Units

Ball Housed Units

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