Tapered Roller Bearing Assemblies

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The inner and outer ring raceways are segments of cones and the rollers are tapered so that the conical surfaces of the raceways, and the roller axes, if projected, would all meet at a common point on the main axis of the bearing. This geometry makes the motion of the cones remain coaxial, with no sliding motion between the raceways and the OD of the rollers.

This conical geometry creates a linear contact patch which permits greater loads to be carried than with spherical (ball) bearings, which have point contact. The geometry means that the tangential speeds of the surfaces of each of the rollers are the same as their raceways along the whole length of the contact patch and no differential scrubbing occurs.

The rollers are stabilized and restrained by a flange on the inner ring, against which their large end slides, which stops the rollers from popping out due to the "pumpkin seed effect" of their conical shape.The larger the half angles of these cones the larger the axial force that the bearing can sustain.

Bearing Number Bore Dia Outer DIa Width Size
TIMKEN HM136948-90243 Tapered Roller Bearing Assemblies Intermediate Duty Setscrew Ball Bearing 209 Series Cast Iron
TIMKEN HM136940-90366 Tapered Roller Bearing Assemblies 203 Series Non-Expansion 4 Bolt Flange Grease Seal (Taper)
TIMKEN HM136948-90238 Tapered Roller Bearing Assemblies Normal Duty Setscrew Ball Bearing 206 Series Polymer
TIMKEN HM136948-90241 Tapered Roller Bearing Assemblies Normal Duty Setscrew Ball Bearing 205 Series Cast Iron
TIMKEN HM136948-90094 Tapered Roller Bearing Assemblies Intermediate Duty Setscrew Ball Bearing 205 Series Cast Iron
TIMKEN HM136948-90226 Tapered Roller Bearing Assemblies Normal Duty Setscrew Ball Bearing 203 Series Zinc
TIMKEN HM136948-90222 Tapered Roller Bearing Assemblies Intermediate Duty Setscrew Ball Bearing 205 Series Zinc
TIMKEN HM136948-90224 Tapered Roller Bearing Assemblies Intermediate Duty Setscrew Ball Bearing 207 Series Zinc
TIMKEN HM136948-90223 Tapered Roller Bearing Assemblies Normal Duty Setscrew Ball Bearing 206 Series Cast Iron
TIMKEN HM136940-90234 Tapered Roller Bearing Assemblies Normal Duty Grip Tight Ball Bearing 205 Series Cast Iron
TIMKEN HM136940-90152 Tapered Roller Bearing Assemblies Intermediate Duty Setscrew Ball Bearing 206 Series Zinc
TIMKEN HM136948-90190 Tapered Roller Bearing Assemblies Medium Duty Setscrew Ball Bearing 207 Series Cast Iron
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