Timken Part Number 3782 - 3720, Tapered Roller Bearings - TS (Tapered Single) Imperial

Specifications

Series	3700
Cone Part Number	3782
Cup Part Number	3720
Design Units	Imperial
Bearing Weight	1.00 Kg2.1 lb
Cage Type	Stamped Steel

Dimensions

d - Bore	44.450 mm1.7500 in
D - Cup Outer Diameter	93.264 mm3.6718 in
B - Cone Width	30.302 mm1.1930 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	52.07 mm2.05 in
db - Cone Backface Backing Diameter	57.91 mm2.28 in
Da - Cup Frontface Backing Diameter	87.90 mm3.50 in
Db - Cup Backface Backing Diameter	82.04 mm3.23 in
Ab - Cage-Cone Frontface Clearance	1.5 mm0.06 in
Aa - Cage-Cone Backface Clearance	1.5 mm0.06 in
a - Effective Center Location3	-8.1 mm-0.32 in

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4	7120 lbf31700 N
C1 - Dynamic Radial Rating (1 million revolutions)5	27500 lbf122000 N
C0 - Static Radial Rating	34300 lbf153000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6	4120 lbf18300 N

Factors

K - Factor7	1.73
e - ISO Factor8	0.34
Y - ISO Factor9	1.77
G1 - Heat Generation Factor (Roller-Raceway)	49.9
G2 - Heat Generation Factor (Rib-Roller End)	14.5
Cg - Geometry Factor	0.0903

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