Timken Part Number HM518445 - HM518410, Tapered Roller Bearings - TS (Tapered Single) Imperial

Specifications

Series	HM518400
Cone Part Number	HM518445
Cup Part Number	HM518410
Design Units	Imperial
Bearing Weight	2.8 Kg6.1 lb
Cage Type	Stamped Steel

Dimensions

d - Bore	88.900 mm3.5000 in
D - Cup Outer Diameter	152.400 mm6.0000 in
B - Cone Width	39.688 mm1.5625 in
C - Cup Width	30.163 mm1.1875 in
T - Bearing Width	39.688 mm1.5625 in

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1	6.35 mm0.25 in
r - Cup Backface "To Clear" Radius2	3.30 mm0.130 in
da - Cone Frontface Backing Diameter	100.08 mm4.63 in
db - Cone Backface Backing Diameter	112.01 mm4.41 in
Da - Cup Frontface Backing Diameter	147.10 mm5.83 in
Db - Cup Backface Backing Diameter	136.91 mm5.39 in
Ab - Cage-Cone Frontface Clearance	4.1 mm0.16 in
Aa - Cage-Cone Backface Clearance	2.8 mm0.11 in
a - Effective Center Location3	-6.4 mm-0.25 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4	17300 lbf76900 N
C1 - Dynamic Radial Rating (1 million revolutions)5	66700 lbf297000 N
C0 - Static Radial Rating	90800 lbf404000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6	11900 lbf52900 N

Factors

K - Factor7	1.45
e - ISO Factor8	0.4
Y - ISO Factor9	1.49
G1 - Heat Generation Factor (Roller-Raceway)	162
G2 - Heat Generation Factor (Rib-Roller End)	33.7
Cg - Geometry Factor	0.0966

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