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Timken Ball Bearings Catalog

Timken Ball Bearings Catalog

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 wide range of bearing sizes from 3 mm to 600 mm bore, suitable for industries such as aircraft, construction, agriculture, and machine tools. It highlights special coatings for corrosion resistance and seal designs for enhanced performance.

Radial and Angular Contact Bearings: Timken offers single-row and double-row angular contact ball bearings. Single-row bearings are designed for high-speed applications with heavy thrust loads, while double-row bearings provide high radial capacity and moderate thrust capacity in both directions.

Extra Small Series: These bearings are designed for small shafts and are suitable for fractional horsepower motors and precision instruments. They are available with various seal types, including felt and rubber seals.

Light and Medium Series: The 200 and 300 Series bearings are designed for light to medium loads and high speeds. They offer a balance between bore, outside diameter, and width, making them versatile for various applications.

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 the meaning of various suffixes and prefixes used in bearing designations, indicating features like shield types, seal types, and construction variations.

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

Pressed Steel Housed Units: These units are designed for light-duty applications and are available in shaft sizes ranging from 6.35 mm to 12.7 mm. They feature a clamp-type bearing with a spherical outer ring for self-alignment and can be sealed or shielded. The radial load capacity is 25% of the basic bearing's dynamic load rating at 33.3 RPM.

RTF-Rubber Tire Flange Housed Unit: Made from a synthetic, conductive elastomer with Durometer hardness 80-85, these units facilitate mounting in frame-type housings. They offer flexibility in adjusting to minor misalignments 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.

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 made from materials like aluminum, steel, and engineered plastics.

Ultra Light 9300K Series: Designed for applications with restricted housing diameters, these bearings are used in machine tools and jet engine gearboxes. They have a thinner section compared to the 9100K Series.

Extra Light 9100K Series: Suitable for applications requiring quiet operation, these bearings are used in electric motors. They offer various sealing options and are designed to maintain large shaft diameters.

Dimensions and Tolerances: The catalog provides detailed specifications for each bearing series, including bore, outside diameter, width, and load ratings. Tolerances are specified for precision applications.

Product Features: The 00K series is described as a Conrad-type bearing, known for its balance and ability to handle radial and thrust loads. The 00W series is noted for its maximum capacity, featuring a filling slot for additional ball complement, enhancing its load-bearing capabilities.

Configurations: Bearings are available in various configurations, including open, shielded, and sealed types. The document lists combinations of shields, seals, and snap rings, with specific suffixes indicating the configuration type.

Applications: The bearings are suitable for general-purpose applications, with specific models designed for electric motors where quiet operation is essential. The document advises consulting Timken representatives for applications involving high thrust loads or sizes not listed.

Key Data: Tables within the document provide critical data such as dimensions, load ratings, and tolerances for each bearing model. This information is essential for selecting the appropriate bearing for specific applications.

Wide-Type Rubber Seal Bearings: These bearings offer a larger support area for shaft and housing contact and are prepacked with lubricant. They are ideal for electric motors, simplifying housing design by eliminating auxiliary seals.

Mechani-Seal Ball Bearings: Designed for applications requiring frictionless sealing and large grease capacity. They ensure effective grease retention and exclusion of foreign matter.

Medium 300K Series: Features a heavier cross-section than the 200 Series, capable of carrying heavier radial, thrust, and combined loads. Uses Conrad-type bearings with deep races and uninterrupted race shoulders, suitable for electric motors where quietness is essential.

Medium, Wide Type W300PP and W300KLL Series: These series have the same bores and outside diameters as standard 300 Series ball bearings but with added width for extra support. Prepacked with long-life, factory-filtered grease, suitable for electric motors where quietness is required.

Metric Series: This section lists bearings with specific dimensions and load ratings. It includes details such as shaft diameter, static and dynamic load ratings, and other critical measurements.

Tri-Ply Series Disk Harrow Units: Describes a versatile bearing design incorporating a Tri-Ply bearing with features like dynamic alignment capability, relubrication, and a shroud effect. It highlights the ease of handling and assembly due to its one-piece unit design.

Radial and Angular Contact Ball Bearings: Provides specifications for various bearing types, including dimensions, tolerances, and load ratings. It distinguishes between non-relubricatable and relubricatable types, detailing their specific applications and advantages.

Special Features and Applications: Lists bearings with unique features such as special seals, heavy outer rings, and specific bore sizes. It also outlines typical applications for each bearing, such as cam followers, mower spindles, and disk harrows.

Typical Applications: The document outlines various applications for lip seals and bearings, including use in disk harrows, transport wheels, chain cases, and agricultural machinery such as beet and potato harvesters, corn head mechanisms, and planters.

Special Features: The bearings described have special features such as oil seals on one side, tri-ply seals, offset rings, and extended inner rings. These features are designed to enhance performance in specific applications.

Performance Ratings: The document provides static and dynamic load ratings for each bearing, indicating their capacity to withstand different levels of stress and fatigue over time.

Recommendations: The document suggests specific bearings for various agricultural and industrial applications, emphasizing the importance of selecting the right bearing type based on the machinery and operational requirements.

7000WN Angular Contact Product Family: Designed for high thrust loads at lower operating temperatures and includes features like refined bore diameter tolerance, increased thrust capacity, and improved oil flow. The Extra Large 100 Series is available in a radially-fitted counterbore type with a maximum complement of balls.

Applications: The bearings are suitable for use in oil refining pump systems, deep well pump motors, vertical and horizontal pumps, worm gear and right angle drives, spindles, live centers, and gearboxes. They are particularly recommended for applications requiring high axial and radial rigidity.

Wide Inner Ring Bearings: Focuses on features, applications, and technical specifications. Includes information on setscrew locking devices, concentric collars, and relubricatable types, highlighting their suitability for different industrial applications.

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.

Technical Data: The document includes tables with detailed measurements and load ratings for various bearing models, specifying bore tolerances and seal types. It also provides ordering instructions, emphasizing the importance of specifying the bearing number followed by "+ COL" for collar inclusion.

Applications: These bearings are suitable for applications in saw and paper mills, fan and blower assemblies, food and grain handling, and conveyor systems. They are designed to operate with reduced noise, vibration, and friction, making them ideal for demanding industrial conditions.

GY-KRRB and SM Series: Includes specifications, tolerances, and features of different bearing models designed for industrial applications.

Specifications: The catalog lists detailed specifications for each bearing model, including bore size, outer diameter, ring widths, and load ratings. For example, the GY1106KRRB has a bore size of 1 3/8 inches and an outer diameter of 2.8346 inches, with static and dynamic load ratings of 3400 and 6400 lbs, respectively.

Procedures and Standards: The document specifies bore tolerances for different size ranges, such as 1/2” - 2 3/16” with a nominal tolerance of .013 mm and a positive tolerance of +.0005”. It also suggests shaft tolerances for various applications.

Product Features: The GY-KRRB series is designed for extended bearing life in demanding environments, featuring a full-width inner ring for extra support and a three-piece seal for protection against corrosion and contamination. The SM series includes both Type A and B bearings, with Type A having cylindrical and Type B having spherical outside diameters.

Recommendations: The document suggests specific shaft tolerances for optimal performance and highlights the use of nylon patch setscrews in the GY-KRRB series to resist back-out in high-vibration applications.

Key Data from Tables: The tables provide comprehensive data on each bearing model, including dimensions, weight, and load ratings. For instance, the GYM1100KRRB has a static load rating of 11100 N and a dynamic load rating of 21800 N.

Conclusion: This catalog serves as a detailed guide for selecting the appropriate Timken bearing for various industrial applications, emphasizing durability, precision, and adaptability to challenging conditions.

Housed Units: Designed to accommodate a wide range of operating conditions with various types and sizes available. These units typically feature cast iron housings and are mounted on straight shafts with a slip fit. They include self-locking collars and setscrew inner bearing designs for easy mounting. The units are available in several basic types: pillow blocks, flanged cartridges, flangette units, cylindrical cartridges, and take-up units, each suited for specific applications and mounting requirements.

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

Flanged Cartridges: Used where a shaft passes through the 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: Provide shaft support where the shaft axis is perpendicular to a machined housing. They are designed for standard-duty applications and are available in synthetic, conductive rubber for low-cost, light-duty operations.

Take-Up Units: Used 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 lock the bearing in place. The collar engages with the bearing's inner ring to grip the shaft tightly, eliminating the need for additional components like locknuts or washers.

SURVIVOR Series: Designed for highly corrosive environments, such as food and beverage processing. These units feature a proprietary thin dense chrome coating for superior corrosion protection and are compliant with USDA and FDA standards. They 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.

SURVIVOR PT 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, the NT 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 setscrew units suitable for normal industrial loads, featuring full-width inner ring setscrews and options for highly corrosive environments.

VAK Standard Series: The VAK 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 tables with dimensions, load ratings, and part numbers for each series, providing essential data for selecting the appropriate bearing unit.

Specifications: The document provides detailed specifications for various bearing units, including VAS, SAS, RAKH, RAKHL, and YASM series. Each unit is described with dimensions, load ratings, and specific features. Units are equipped with grease fittings, with variations in fitting sizes depending on the unit.

Procedures: Instructions for ordering specify the need to mention the unit and shaft diameter. The document emphasizes the importance of selecting the correct unit based on application requirements.

Standards and Recommendations: The document outlines suggested shaft tolerances for different series, ensuring optimal performance and compatibility. It also highlights the maximum operating temperature for certain units, particularly the RAKHL expansion series, which is limited to 250°F (121°C).

Key Features:

The SAS series features a streamlined, rugged one-piece pillow block unit with a Timken engineered housing and GYA-RRB setscrew bearing.
The RAKH series is designed for interchangeability with competitive designs and includes self-locking collars.
The YASM series is noted for its medium-duty applications, with durable cast iron housings resistant to corrosion and chemicals.

Critical Information:

All units, except specific sizes, have a 1/8 pipe thread grease fitting.
The document provides a comprehensive catalog reference for further details on each series, including page numbers for specific bearing data.

SAL Industrial Series:

Designed for high-temperature applications with floating and fixed bearing units.
Floating units allow axial movement due to shaft expansion, while fixed units maintain shaft location.
Equipped with self-aligning SM wide inner ring bearings and self-locking collars.
Oil-tight seals are standard, with options for grease lubrication.
Suggested shaft tolerances range from 1 3/16” to 3 15/16”.

SAOL Heavy Series:

Similar to the SAL series but designed for even higher temperatures and heavier applications.
Features include self-aligning SMN wide inner ring bearings and oil-type seals.
Units can be converted from fixed to floating by removing a spacer ring.
Suggested shaft tolerances are provided, with larger sizes requiring consultation with a Timken representative.

DRNR Industrial Series:

Rigid double pillow block designed for heavy-duty applications like fans and blowers.
Compact housing with two wide inner ring bearings and integral R-Seals.
Equipped with grease fittings for relubrication and can be mounted in any position.
Suggested shaft tolerances range from 15/16” to 2 3/16”.

RCJ, TCJ, LCJ Industrial Series:

Cartridge units designed for minimal machining applications.
Pre-assembled and ready for mounting with bolts through the flange.
Equipped with wide inner ring bearings that are self-aligning to compensate for shaft misalignment.

Ordering Information: To order, specify the unit type, shaft diameter, and whether the unit is fixed or floating. Example: SAL 1 7/16’’ (one fixed, one floating).

Tri-Ply Seal Bearings: Best for dirty environments, factory prelubricated, with self-locking collars and optional safety end caps.

Mechani-Seal Bearings: Used in LCJ units, suitable for various applications.

RCJ and TCJ Units: Identical except for the seal type, with TCJ using Tri-Ply seals.

RCJC Series: Features concentric collars for shaft locking, self-alignment capability, and interchangeable bolt hole spacing with RCJ series.

YCJ Series: Uses setscrews for locking, with self-alignment and interchangeable bolt hole spacing.

VCJ Series: Flange cartridges ready for mounting, ideal for minimal machining applications, with positive contact seals and self-locking collars.

SCJ Series: Similar to VCJ but with setscrew locking, suitable for applications requiring minimal shaft length.

Procedures:

Units are factory prelubricated, but grease fittings are available for relubrication if necessary.
For highly corrosive applications, consult Timken for thin dense chrome-coated bearings.

Standards and Recommendations:

Suggested shaft tolerances are provided for different shaft diameters, ensuring proper fit and function.
Safety end caps are recommended for selected sizes to enhance safety and performance.

Data and Load Ratings:

Detailed tables provide dimensions, load ratings, and bearing numbers for each unit type, facilitating selection and ordering.

Ordering Information:

Specify unit and shaft diameter when ordering, with examples provided for clarity.

VCJT Standard Series:

Features two bolt holes for mounting in restricted areas.
Equipped with GRA-RRB bearings with positive contact seals and self-locking collars.
Factory prelubricated with a grease fitting for relubrication.
Safety end caps available for selected sizes.

YCJT Industrial Setscrew Series:

Similar design to YCJ Series but with two bolts for mounting.
Equipped with GY-KRRB wide inner ring, setscrew bearings.
Factory prelubricated with a grease fitting for relubrication.
Safety end caps available for selected sizes.

SCJT Standard Series:

Constructed similarly to SCJ Type but with two bolts for mounting.
Assembled with GYA-RRB bearings with positive contact seals and setscrew locking.
Factory prelubricated with a grease fitting for relubrication.

FLCT Standard Series:

Designed for sturdy shaft support in minimal space.
Equipped with RA-RRB extended inner ring ball bearings with positive contact seals.
Permanently prelubricated and resistant to contaminants.

RFC Industrial Piloted Series:

Piloted flange cartridges for accurate mounting and heavy load support.
Assembled with R-Seal (GC-KRRB) bearings with a concentric locking collar.
Factory prelubricated with a grease fitting for relubrication if required.

General Specifications:

Suggested shaft tolerances are provided for each series, ensuring precise fitting.
Units are designed to be factory prelubricated, with options for relubrication.
Safety features such as end caps are available for selected sizes.

Ordering Information: To order, specify the unit and shaft diameter. Popular sizes are highlighted in bold for easy reference.

Flangette Units and Bearings: Used in applications where space is limited or specific alignment and lubrication requirements are needed.

Specifications: The document lists dimensions, load ratings, and specific features for each unit type. For example, RA flangette units are similar to Timken RR units and consist of interchangeable, pressed-steel, zinc-plated flanges housing a standard ball bearing. They incorporate an extended inner ring bearing with a self-locking collar and spherical seat for initial self-alignment.

Procedures: To order, specify the unit and shaft diameter. The document provides examples and detailed tables with dimensions and load ratings for each unit type. It also specifies that stampings must be ordered in pairs to assemble bearings.

Standards and Recommendations: Suggested shaft tolerances are provided for different shaft diameters. The document emphasizes that thrust ratings for stampings are 50% of radial ratings and that all units are non-relubricatable unless specified otherwise.

Relubricatable Units: GRA and GRR series are designed for relubrication in environments with excessive moisture and contamination. These units are zinc-plated and dimensionally interchangeable with non-relubricatable types, incorporating G-KRRB bearings and GRA-RRB inner ring bearings with positive contact seals.

Key Data: The document includes extensive tables with measurements in both metric and imperial units, detailing dimensions such as shaft diameter, hole width, and load ratings for each unit type.

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 are provided for different shaft diameters.

Product Series:

YTU Industrial Series: Features include compact supports for adjustable shafts and conveyor take-up pulleys. Specific dimensions and load ratings are provided for various unit sizes.
VTU Standard Series: Similar to the YTU series, with specifications for shaft tolerances and prelubrication details.
TTU Industrial Series: Incorporates 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 with a Timken precision ball bearing.
Available in designs for V-belts and chain idlers, featuring rubber seals for protection against contaminants.
Non-relubricatable with features to prevent belt chafing and allow water drainage.

Roller Chain Idler Sprockets:

Made from sintered steel, providing an economical solution for replacing hardened plate steel sprockets.
Non-relubricatable and suitable for various applications.

Ordering Information: To order, specify the unit and shaft diameter or pulley number. Popular sizes are highlighted in bold for easy reference.

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, including angular contact and ballscrew support bearings. These are available in various sizes and configurations, offering high speed, accuracy, and low noise.

Key Features: The catalog emphasizes the importance of proper lubrication and safety measures, such as the use of safety end caps and specialized lubricants, to enhance the performance and longevity of bearings in industrial applications.

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 detailed, highlighting their design for high stiffness and ease of installation.

Applications: Timken bearings are used in various machine tool applications, including high-speed internal grinding spindles, ultra precision surface grinding spindles, and heavy-duty precision boring spindles. Each application benefits from the bearings' ability to maintain accuracy and rigidity under different operational conditions.

Special Requirements: Timken addresses special requirements for high-speed and heavy-duty applications, offering design features tailored to specific needs. The catalog encourages consultation with Timken representatives for customized solutions.

High-Speed Precision Boring Head: This component operates at 2500 to 3000 RPM using angular-contact, super precision bearings. The design allows for axial movement under spring load, preventing excessive heat and maintaining low operating temperatures. Bearings are grease lubricated.

Ultra Precision Grinding Workhead: Designed for extreme accuracy, maintaining straightness and roundness within ten millionths of an inch. Utilizes ultra precision ball bearings manufactured to tighter tolerances than ABEC 9 standards. The workhead features a four-bearing arrangement for heavy work and a two-bearing setup for lighter tasks, both grease lubricated.

Precision Toolroom Surface Grinder Spindle: Utilizes Timken Fafnir duplexed, super precision, preloaded bearings for high rigidity and low operating temperatures. The housing is designed for true alignment, with the rear bearings floating to compensate for thermal changes. Bearings are grease lubricated for life.

Single Bar Machine: Supported by two pairs of super precision bearings, operating at speeds from 78 to 1500 RPM. Capable of handling a 25000-pound thrust load during unchucking operations. Bearings are grease packed for life.

100,000 RPM High-Cycle Wheelhead: Features super precision bearings produced to ABEC 9 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. Capable of boring holes with an accuracy of one ten-thousandth of an inch.

Super Precision Lathe Headstock: Achieves work roundness of 35 millionths of an inch at speeds up to 4800 RPM. Utilizes a tandem pair of bearings opposed by a spring-loaded bearing for excellent rigidity. Bearings are prelubricated with grease.

High-Speed Motorized Router: Uses a specially matched 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 different speeds, providing high radial and axial rigidity through a back-to-back bearing arrangement. Bearings are grease packed 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.

Specifications: The catalog provides detailed specifications for each bearing model, including bore diameter, outer diameter, width, ball quantity, weight, static and dynamic load ratings, and limiting speed. Each bearing is identified by a unique model number (e.g., MM9101K, MM9103K).

Dimensional Details: The document lists precise measurements for each bearing, including tolerances for bore and outer diameters, as well as width. These measurements are crucial for ensuring proper fit and function in mechanical assemblies.

Load Ratings: Load ratings are provided for both static (Co) and dynamic (Ce) conditions, indicating the maximum load the bearings can handle under different operational scenarios.

Recommended Fits: The catalog suggests fixed and floating shoulder diameters for shaft and housing, along with mounting fits and housing clearance. These recommendations ensure optimal performance and longevity of the bearings.

Performance Standards: Bearings in the catalog meet ABEC 9 (ISO P2) levels for running accuracy and performance, with non-critical features conforming to ABEC 7 (ISO P4) requirements. This ensures high precision and reliability in applications.

Construction: The bearings feature Conrad construction, which includes a maximum complement of balls separated by a two-piece land piloted cage, enhancing durability and performance.

Key Data Extraction: The document includes tables with critical data such as dimensions, load ratings, and recommended fits, which are essential for engineers and technicians in selecting the appropriate bearings for specific applications.

Specifications: The catalog provides detailed specifications for each bearing model, including dimensions (bore, outer diameter, width), weight, ball quantity, and load ratings (static and dynamic). It also specifies the maximum speed, radial clearance, and tolerances for shaft and housing diameters.

Design Features: The bearings are designed for maximum axial rigidity, low drag torque, and control of lateral eccentricity. They are manufactured to ABEC 9 axial tolerances and ABEC 7 radial and envelope tolerances. The bearings are nonseparable angular-contact type with a 60˚ contact angle and are prelubricated with heavy-duty grease.

Mounting Arrangements: Bearings can be mounted in duplexed pairs or multiplexed sets in Back-to-Back (DB), Face-to-Face (DF), or Tandem (DT) arrangements. This flexibility allows for various application needs and enhances performance.

Performance Data: The document includes performance data for the ball screw support series, detailing static and dynamic thrust capacities, maximum speed, axial spring constants, and drag torque. The data is presented for both single and dual bearing sets.

Applications: These bearings are suitable for applications requiring high precision and reliability, such as in machinery where axial and radial loads are significant. The catalog emphasizes the bearings' suitability for high-speed operations and their ability to maintain performance under heavy loads.

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 and a maximum RPM of 9000 with mist lubrication.

Additional Information:

The document emphasizes the importance of not interchanging MM-EX with MM-XWO bearings.
Timken provides a range of industrial services, including remanufacture and repair.

Catalog excerpts

TIMKEN BALL BEARINGS CATALOG

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TIMKEN BALL BEARINGS CATALOG

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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 F flanged outer ring J extra loose internal fit JJ extra extra loose internal fit S extra small inch-dimension type (same width inner and outer) WIR single-row, wide inner only Bore Size: (04 and up: multiply last two numbers by five to get FT full ball complement K Conrad, non-filling slot type W maximum capacity, filling slot type Wl angular contact, low-shoulder outer WO angular contact, low-shoulder inner WN angular contact, low-shoulder, Numbers: Basic Type Series: SI 3, 5, 7, etc., single-row inch, extra small 30 single-row metric, extra small 100...

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Radial and Angular Contact Ball Bearings Radial Ball Bearings Page Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . D4 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 . . . . . . . . . . . . . . ....

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BALL BEARINGS 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 it is not...

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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. TRI-PLY SEAL DISK HARROW BEARINGS BearingswithTri-Ply Seals are designed for service involving severe contamination, such as disk harrows, disk tillers and other seed preparation equipment and certain conveyor applications....

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EXTRA SMALL 30 METRIC SERIES • 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. • Offer various combinations of shields and seals, as listed • Electric motor quality for applications where quietness is • Stainless steel series, denoted by a prefix A before the bearing number. (Example: A38K) OPEN AND SHIELDED TYPES DIMENSIONS - TOLERANCES (1> Maximum shaft or housing fillet radius that bearing corners will clear....

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Radial and Angular Contact Ball Bearings EXTRA SMALL 30 METRIC SERIES • 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 and one shield (suffix LD). Bearing Number Ring Width I') Maximum shaft or housing fillet radius that bearing corners will clear I2) Does not apply to bearings with two seals. Note: Inner ring offset Is .51 mm (.020 Inches) for the L, LD, and VLD verslons. Seal Protection l3l Two seals (suffix LL)...

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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 • Several sizes are manufactured both in standard bearing-quality steel and stainless steel, as indicated in the tables. l'I Maximum shaft or housing fillet radius that bearing corners will...

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Radial and Angular Contact Ball Bearings FLANGED SERIES • 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 "I Also available In stainless steel. To specify, add preflx'A" before bearing number l2l Based on 106 revolutions of calculated fatigue life •Also available with two contact seals. To specify, replace "KDD" In part number with "PP". • F...

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BALL BEARINGS Pressed steel housed units designed for light-duty applications. Available in shaft sizes from 6.35 mm -12.7 mm PA to V2 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 of basic bearing's dynamic load Inspected...

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Timken Ball Bearings Catalog

Timken Ball Bearings Catalog

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