Timken NA78250
Tapered Roller Bearings - Single Cones - Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
Specifications
Design Units
Imperial
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
353000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
91500 N
Dimensions
d - Cone Bore
63.500 mm
B - Cone Width
38.894 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius3
2.300 mm
db - Cone Backface Backing Diameter
85 mm
Ab - Cage-Cone Frontface Clearance
-1.9447 mm
Aa - Cage-Cone Backface Clearance
3.8894 mm
a - Effective Center Location4
7.9 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)5
52600 N
C6
77900 N
Factors
K - Factor7
0.67
