Timken Part Number 580 - 572-B, Tapered Roller Bearings - TSF (Tapered Single with Flange) Imperial

Specifications

Series	575
Cone Part Number	580
Cup Part Number	572-B
Design Units	Imperial
Bearing Weight	4.9 lb2.2 Kg
Cage Type	Stamped Steel

Dimensions

d - Bore	3.2500 in82.550 mm
D - Cup Outer Diameter	5.5115 in139.992 mm
D1 - Flange Outer Diameter	5.7575 in146.241 mm
B - Cone Width	1.4212 in36.098 mm
C - Cup Width	1.1250 in28.575 mm
C1 - Cup Flange Width	0.2500 in6.350 mm
T1 - Bearing Width	1.4375 in36.513 mm
T - Bearing Width to Flange	0.5625 in14.288 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1	0.14 in3.600 mm
r - Cup Backface "To Clear" Radius2	0.130 in3.30 mm
da - Cone Frontface Backing Diameter	3.58 in90.90 mm
db - Cone Backface Backing Diameter	3.86 in98 mm
Da - Cup Frontface Backing Diameter	5.31 in134.11 mm
Ab - Cage-Cone Frontface Clearance	0.1 in2.5 mm
Aa - Cage-Cone Backface Clearance	0.12 in3 mm
a - Effective Center Location3	-0.21 in-5.3 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4	12100 lbf53600 N
C1 - Dynamic Radial Rating (1 million revolutions)5	46500 lbf207000 N
C0 - Static Radial Rating	65400 lbf291000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6	8330 lbf37100 N

Factors

K - Factor7	1.45
e - ISO Factor8	0.4
Y - ISO Factor9	1.49
G1 - Heat Generation Factor (Roller-Raceway)10	126
G2 - Heat Generation Factor (Rib-Roller End)	32
Cg - Geometry Factor11	0.13

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