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 LM272249-902C8 Tapered Roller Bearing Assemblies	160 mm	Felt Type	Split Cylindrical Expansion Type	Four-Bolt Plummer Block
TIMKEN LM272249-902C4 Tapered Roller Bearing Assemblies	HH221400	HH221434	Imperial	Stamped Steel
TIMKEN LM102949-90010 Tapered Roller Bearing Assemblies	130 mm	270 mm	265 mm	134 mm
TIMKEN LL217849-50000/LL217810-50000 Tapered Roller Bearing Assemblies	380 mm	560 mm	180 mm	5 mm
TIMKEN LL714649-50000/LL714610-50000 Tapered Roller Bearing Assemblies	380 mm	620 mm	194 mm	5 mm
TIMKEN LL352149-90011 Tapered Roller Bearing Assemblies	380 mm	560 mm	135 mm	5 mm
TIMKEN 581-90317 Tapered Roller Bearing Assemblies	15500	15590	Imperial	Stamped Steel
TIMKEN 581-90315 Tapered Roller Bearing Assemblies	1 5/16 in	Cylindrical bore	Ball Bearing	Bearing Steel
TIMKEN LL244549-50000/LL244510-50000 Tapered Roller Bearing Assemblies	65 mm	140 mm	33 mm	23 mm
TIMKEN LM263149D-90021 Tapered Roller Bearing Assemblies	400 mm	540 mm	106 mm	4 mm
TIMKEN LL225749-50000/LL225710-50000 Tapered Roller Bearing Assemblies	Cylindrical Bore	Open	Double Row	Symmetric
TIMKEN LM263149D-90020 Tapered Roller Bearing Assemblies	6-11/16 in	Aluminium Triple Labyrinth	Split Cylindrical Expansion Type	Four-Bolt Plummer Block