Timken B-2812 needle roller bearings

Timken B-2812 bearing Size Chart (mm/inches)
Series	435
Cone Part Number	438
Cup Part Number	432DC
Design Units	Imperial
Bearing Weight	4.37 lb
Cage Type	Stamped Steel
Ab - Cage-Cone Frontface Clearance	0.05 in
d	1.7500 in
D	3.7500 in
B - Cone Width	1.1772 in
C - Double Cup Width	2.0000 in
T - Bearing Width across Cones	2.4376 in
R - Cone Backface To Clear Radius1	0.14 in
r - Cup Frontface To Clear Radius2	0.03 in
db - Cone Backface Backing Diameter	2.24 in
Da - Cup Frontface Backing Diameter	3.46 in
Aa - Cage-Cone Backface Clearance	0.04 in
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3	7400 lbf
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4	49700 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5	12900 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6	3600 lbf
K - Factor7	2.05
e - ISO Factor8	0.28
Y1 - ISO Factor9	2.37
Y2 - ISO Factor10	3.53
Cg - Geometry Factor11	0.0805

Product Features