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 LL889049-90022 Tapered Roller Bearing Assemblies	300 mm	500 mm	160 mm	5 mm
TIMKEN LL889049-40000/LL889010D-40000 Tapered Roller Bearing Assemblies	420 mm	620 mm	238 mm	150 mm
TIMKEN LL889049-40000/LL889010-40000 Tapered Roller Bearing Assemblies	140 mm	Felt Type	Split Cylindrical Retained Type	Four-Bolt Plummer Block
TIMKEN LM272249-902C2 Tapered Roller Bearing Assemblies	380 mm	620 mm	243 mm	5 mm
TIMKEN LL788349-40000/LL788310-40000 Tapered Roller Bearing Assemblies	260 mm	400 mm	104 mm	4 mm
TIMKEN LL778149-90019 Tapered Roller Bearing Assemblies	200 mm	360 mm	98 mm	4 mm
TIMKEN LL778149-90018 Tapered Roller Bearing Assemblies	560 mm	870 mm	330 mm	200 mm
TIMKEN LL778149-902A1 Tapered Roller Bearing Assemblies	670 mm	980 mm	350 mm	230 mm
TIMKEN LL778149-90012 Tapered Roller Bearing Assemblies	55 mm	Kevlar Packing Seal	Split Cylindrical Retained Type	Round Flange
TIMKEN LL771948-902A6 Tapered Roller Bearing Assemblies	2-7/16 in	High Temperature Packing	Split Cylindrical Retained Type	Round Flange
TIMKEN LL771948-902A4 Tapered Roller Bearing Assemblies	FSNT 526	22226K	SR230X13	TSNG526
TIMKEN LL771948-902A2 Tapered Roller Bearing Assemblies	850 mm	1120 mm	155 mm	8 mm