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 29585-50000/29520-50000 Tapered Roller Bearing Assemblies	Medium Duty	Setscrew Ball Bearing	210 Series	Ductile Iron
TIMKEN 74550-90278 Tapered Roller Bearing Assemblies	Normal Duty	Setscrew Ball Bearing	204 Series	Cast Iron
TIMKEN 93775-902A1 Tapered Roller Bearing Assemblies	Normal Duty	Setscrew Ball Bearing	210 Series	Cast Iron
TIMKEN 93751D-90113 Tapered Roller Bearing Assemblies	Normal Duty	Setscrew Ball Bearing	208 Series	Ductile Iron
TIMKEN 28980-90100 Tapered Roller Bearing Assemblies	Normal Duty	Setscrew Ball Bearing	207 Series	Cast Iron
TIMKEN 28980-50000/28921B-50000 Tapered Roller Bearing Assemblies	Normal Duty	Setscrew Ball Bearing	206 Series	Cast Iron
TIMKEN 28980-50000/28921-50000 Tapered Roller Bearing Assemblies	Medium Duty	Setscrew Ball Bearing	210 Series	Ductile Iron
TIMKEN EE121140-90012 Tapered Roller Bearing Assemblies	Normal Duty	Setscrew Ball Bearing	212 Series	Ductile Iron
TIMKEN EE117067-90029 Tapered Roller Bearing Assemblies	Intermediate Duty	Setscrew Ball Bearing	210 Series	Cast Iron
TIMKEN EE117063-90031 Tapered Roller Bearing Assemblies	Normal Duty	Setscrew Ball Bearing	210 Series	Cast Iron
TIMKEN EE117063-90024 Tapered Roller Bearing Assemblies	Normal Duty	Setscrew Ball Bearing	209 Series	Cast Iron
TIMKEN EE114080-902A3 Tapered Roller Bearing Assemblies	Tapered Bore	Open	Double Row	Symmetric