Timken Part Number 33275 - 33462, Tapered Roller Bearings - TS (Tapered Single) Imperial

Specifications

Series	33000
Cone Part Number	33275
Cup Part Number	33462
Design Units	Imperial
Bearing Weight	1.3 Kg2.8 lb
Cage Type	Stamped Steel

Dimensions

d - Bore	69.850 mm2.7500 in
D - Cup Outer Diameter	117.475 mm4.6250 in
B - Cone Width	30.163 mm1.1875 in
C - Cup Width	23.813 mm0.9375 in
T - Bearing Width	30.163 mm1.1875 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1	3.560 mm0.14 in
r - Cup Backface "To Clear" Radius2	3.30 mm0.130 in
da - Cone Frontface Backing Diameter	78.99 mm3.78 in
db - Cone Backface Backing Diameter	85.09 mm3.35 in
Da - Cup Frontface Backing Diameter	113.00 mm4.45 in
Db - Cup Backface Backing Diameter	103.89 mm4.09 in
Ab - Cage-Cone Frontface Clearance	1.8 mm0.07 in
Aa - Cage-Cone Backface Clearance	1.8 mm0.07 in
a - Effective Center Location3	-2.8 mm-0.11 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4	8060 lbf35900 N
C1 - Dynamic Radial Rating (1 million revolutions)5	31100 lbf138000 N
C0 - Static Radial Rating	44300 lbf197000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6	6020 lbf26800 N

Factors

K - Factor7	1.34
e - ISO Factor8	0.44
Y - ISO Factor9	1.38
G1 - Heat Generation Factor (Roller-Raceway)	84.2
G2 - Heat Generation Factor (Rib-Roller End)	25.9
Cg - Geometry Factor	0.116

Tapered roller bearings are rolling element bearings that can support axial forces (i.e., they are good thrust bearings) as well as radial forces.

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.

E has different special properties with other inner rings or outer rings marked with the same basic parts code, not interchangeable inner rings or outer rings.

There is a stop ring on the outer diameter of RB