Timken Part Number H715343 - H715311, Tapered Roller Bearings - TS (Tapered Single) Imperial

Specifications

Series	H715300
Cone Part Number	H715343
Cup Part Number	H715311
Design Units	Imperial
Bearing Weight	3.2 Kg7.100 lb
Cage Type	Stamped Steel

Dimensions

d - Bore	68.263 mm2.6875 in
D - Cup Outer Diameter	136.525 mm5.3750 in
B - Cone Width	46.038 mm1.8125 in
C - Cup Width	36.513 mm1.4375 in
T - Bearing Width	46.038 mm1.8125 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	86.11 mm4.17 in
db - Cone Backface Backing Diameter	91.95 mm3.62 in
Da - Cup Frontface Backing Diameter	132.59 mm5.22 in
Db - Cup Backface Backing Diameter	118.11 mm4.65 in
Ab - Cage-Cone Frontface Clearance	2.8 mm0.11 in
Aa - Cage-Cone Backface Clearance	3.6 mm0.14 in
a - Effective Center Location3	-8.6 mm-0.34 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4	18600 lbf82700 N
C1 - Dynamic Radial Rating (1 million revolutions)5	71700 lbf319000 N
C0 - Static Radial Rating	91000 lbf405000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6	15100 lbf67000 N

Factors

K - Factor7	1.24
e - ISO Factor8	0.47
Y - ISO Factor9	1.27
G1 - Heat Generation Factor (Roller-Raceway)	147
G2 - Heat Generation Factor (Rib-Roller End)	32.8
Cg - Geometry Factor	0.0993

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