Timken Part Number 28682 - 28622-B, Tapered Roller Bearings - TSF (Tapered Single with Flange) Imperial

Specifications

Series	28600
Cone Part Number	28682
Cup Part Number	28622-B
Design Units	Imperial
Bearing Weight	1.1 lb0.5 Kg
Cage Type	Stamped Steel

Dimensions

d - Bore	2.2500 in57.150 mm
D - Cup Outer Diameter	3.8437 in97.630 mm
D1 - Flange Outer Diameter	3.9960 in101.498 mm
B - Cone Width	0.9688 in24.608 mm
C - Cup Width	0.7656 in19.446 mm
C1 - Cup Flange Width	0.1560 in3.962 mm
T1 - Bearing Width	0.9688 in24.608 mm
T - Bearing Width to Flange	0.3592 in9.124 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1	0.14 in3.600 mm
r - Cup Backface "To Clear" Radius2	0.030 in0.80 mm
da - Cone Frontface Backing Diameter	2.48 in63 mm
db - Cone Backface Backing Diameter	2.76 in70.1 mm
Da - Cup Frontface Backing Diameter	3.74 in95.00 mm
Ab - Cage-Cone Frontface Clearance	0.1 in2.5 mm
Aa - Cage-Cone Backface Clearance	0.04 in1 mm
a - Effective Center Location3	-0.13 in-3.3 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4	7180 lbf32000 N
C1 - Dynamic Radial Rating (1 million revolutions)5	27700 lbf123000 N
C0 - Static Radial Rating	32000 lbf142000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6	4950 lbf22000 N

Factors

K - Factor7	1.45
e - ISO Factor8	0.4
Y - ISO Factor9	1.49
G1 - Heat Generation Factor (Roller-Raceway)10	54
G2 - Heat Generation Factor (Rib-Roller End)	20.2
Cg - Geometry Factor11	0.0979

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