Timken 28990
Tapered Roller Bearings - Single Cones - Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
Specifications
Series
28900
Cone Part Number
28990
Design Units
Imperial
Cage Type
Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
185000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
47900 N
Dimensions
d - Cone Bore
61.976 mm
B - Cone Width
24.608 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius3
2 mm
da - Cone Frontface Backing Diameter
68 mm
db - Cone Backface Backing Diameter
72 mm
Ab - Cage-Cone Frontface Clearance
2.3 mm
Aa - Cage-Cone Backface Clearance
0.5 mm
a - Effective Center Location4
-1.8 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)5
27500 N
C1 - Dynamic Radial Rating (1 million revolutions)6
106000 N
C0 - Static Radial Rating
149000 N
C7
20000 N
Factors
K - Factor8
1.37
G1 - Heat Generation Factor (Roller-Raceway)
60.1
G2 - Heat Generation Factor (Rib-Roller End)
24.5
Cg - Geometry Factor9
0.103
