TIMKEN TAPERED ROLLER BEARING CATALOG
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TAPERED ROLLER BEARING CATALOG INDEX
OVERVIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 SHELF LIFE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 ENGINEERING Tapered Roller Bearing Types and Cages . . . . . . . . . . . . . . . . . . . . . .6 Determination of Applied Loads and Bearing Analysis Symbols .10 Metric System Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Inch System Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Tapered Roller Bearing Mounting Designs, Fitting Practices and Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Fitting Practice Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32 Operating Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 Heat Generation and Dissipation . . . . . . . . . . . . . . . . . . . . . . . . .50 Torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55 TAPERED ROLLER BEARINGS Part-Numbering Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66 Radial Roller Bearings Single-Row Bearing Types TS (pressed steel and pin-type) . . . . . . . . . . . . . . . . . . . . . . .81 Metric . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .393 TSF (flanged cup) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .433 TSL (DUO-FACE Plus Seal) . . . . . . . . . . . . . . . . . . . . . . . . .505 Double-Row Bearing Type TDO (single piece (double) outer ring and two single inner rings) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .509 TDI (double-row double inner race) . . . . . . . . . . . . . . . . . .609 TDIT (double-row double inner race with tapered bore) . .640 TNA (double-row non-adjustable) . . . . . . . . . . . . . . . . . . . .647 TNASW (double-row, non-adjustable with lubricant slots) .659 TNASWE (double-row, non-adjustable with lubricant slots and extended back face rib) . . . . . . . . . . . . . . .664 2TS-IM (two single-row assemblies, indirect mount) . . .670 2TS-DM (two single-row assemblies, direct mount) . . . .698 2S (two single-row assemblies with snap ring spacer) . .722 SR (two single row, SET-RIGHT assembly) . . . . . . . . . . .726 Tapered Roller Thrust Bearing Part-Numbering Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .736 TTHD (heavy duty) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .737 TTHDFL (flat race) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .738 TTVS (flat race, self-aligning) . . . . . . . . . . . . . . . . . . . . . . . . . . .740 TTSP (light-duty, with cage) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .741 TTC, TTCS, TTCL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .744 Auxiliary Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .747
ABOUT THE TIMKEN COMPANY
The leading authority on tapered roller bearings, Timken today applies its deep knowledge of metallurgy, tribology and mechanical power transmission across a variety of bearings and related systems to improve reliability and efficiency of machinery and equipment all around the world. Timken (NYSE: TKR; www.timken.com) engineers, manufactures and markets bearings, gear drives, belts, chain and related products, and offers a spectrum of powertrain rebuild and repair services. 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.
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