1.5M 02-19 :29 Order No. 11193 | Timken® is a registered trademark of The Timken Company. | © 2019 The Timken Company | Printed in U.S.A. All other trademarks are the property of their respective owners. To view more Timken catalogs, go to www.timken.com/catalogs for interactive versions, or to download a catalog app for your smart phone or mobile device scan the QR code or go to www.timkencatalogs.com. TIMKEN® ANGULAR CONTACT BALL BEARING CATALOG The Timken team applies their know-how to improve the reliability and performance of machinery in diverse markets worldwide. The company designs, makes and markets bearings, gear drives, automated lubrication systems, belts, brakes, clutches, chain, couplings, linear motion products and related power transmission rebuild and repair services.

ABOUT THE TIMKEN COMPANY As a global leader in bearings and power transmission systems, Timken focuses on precise solution design, materials and craftsmanship to deliver reliable and efficient performance that improves productivity and uptime. Timken offers a full range of bearings, belts, chains, couplings, gears and lubricants, along with rebuild and repair services. Timken (NYSE; TKR; www.timken.com) applies its proven expertise in metallurgy, tribology and mechanical power transmission to create innovative approaches to customers’ complex needs. Global availability of products and engineering...

INTRODUCTION • HOW TO USE THIS CATALOG TIMKEN® ANGULAR CONTACT BALL BEARINGS ALL-AROUND RELIABILITY Designed for reliable performance in pump, compressor, electric motor and many other industrial applications, our angular contact ball bearings are able to handle high speeds and both radial and axial loading. These bearings follow ISO standards and are dimensionally interchangeable with competitor metric products. MORE CHOICES We have added 250-new part numbers to our growing portfolio of single-row and double-row products. Now, you have more options from a dependable supplier known for quality...

SHELF LIFE AND STORAGE SHELF LIFE AND STORAGE OF GREASE-LUBRICATED BEARINGS AND COMPONENTS To help you get the most value from our products, Timken provides guidelines for the shelf life of grease-lubricated ball and roller bearings, components and assemblies. Shelf life information is based on Timken and industry test data and experience. SHELF LIFE Shelf life should be distinguished from lubricated bearing component design life as follows: Shelf life of the grease-lubricated bearing/component represents the period of time prior to use or installation. The shelf life is a portion of the anticipated...

TIMKEN WARNINGS DISCLAIMER WARNING Failure to observe the following warnings could create a risk of death or serious injury. Proper maintenance and handling practices are critical. Always follow installation instructions and maintain proper lubrication. Tensile stresses can be very high in tightly fitted bearing components. Attempting to remove such components by cutting the inner ring may result in a sudden shattering of the component, causing fragments of metal to be forcefully expelled. Always use properly guarded presses or bearing pullers to remove bearings from shafts, and always use suitable...

ENGINEERING ENGINEERING This engineering section is not intended to be comprehensive, but does serve as a useful guide in bearing selection. To view the complete engineering catalog and other Timken catalogs, go to www.timken.com/catalogs for interactive versions, or to download a catalog app for your smart phone or mobile device scan the QR code or go to www.timkencatalogs.com. TIMKEN® ANGULAR CONTACT BALL BEARING CATALOG

BEARING TYPES AND CAGES BEARING TYPES AND CAGES Angular contact ball bearings are available from Timken in singlerow 7200 and 7300 series and double-row 3200 and 3300 series. Designed to take both radial and thrust loading, angular contact ball bearings are commonly used in pumps, compressors, electric motors and many other industrial applications. Our expanded portfolio includes a range of single-row standard, single-row universally matched, and double-row designs (see table 1). These angular contact ball bearings follow ISO standards and are dimensionally interchangeable with competitor metric...

METRIC SYSTEM TOLERANCES Ball bearings are manufactured to a number of specifications with each having classes that define tolerances on dimensions such as bore, outer diameter, width and runout. Standard Timken angular contact ball bearings maintain normal tolerances (P0) according to the current ISO 492 standard. Universally matched bearings are manufactured according to P5 class tolerances. The term "deviation" is defined as the difference between a single ring dimension and the nominal dimension. For metric tolerances, the nominal dimension is at a +0 mm tolerance. The deviation is the tolerance...

ENGINEERING ENGINEERING BEARING LIFE BEARING LIFE SPEED RATING The selection of the appropriate bearing for a given application is dependent on several performance criteria. These include bearing fatigue life, rotating precision, power loss requirement, temperature limits, speed capabilities and sound requirements. This section deals primarily with bearing life as related to material-associated fatigue. THERMAL REFERENCE SPEED Bearing life is defined as the length of time, or number of revolutions, until a fatigue spall of 6 mm2 develops. Since fatigue is a statistical phenomenon, the life of...

ENGINEERING ENGINEERING MOUNTING AND FITTING STANDARD DESIGN SINGLE-ROW BEARING DESIGN Standard design angular contact ball bearings are in applications when one bearing is used for each bearing side. The mounting can be either back-to-back (DB, Fig. 4) or face-to-face (DF, Fig. 5). Because standard design bearings need to be adjusted for optimum performance, they are not suitable to mount immediately adjacent to each other. Single-row angular contact ball bearings are designed to handle radial and axial loads simultaneously. However, they can only accommodate axial loads in one direction. As...