Timken 3478
Tapered Roller Bearings - Single Cones - Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
Specifications
Series
3400
Cone Part Number
3478
Design Units
Imperial
Cage Type
Stamped Steel
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1
182000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2
47200 N
Dimensions
d - Cone Bore
34.925 mm
B - Cone Width
29.771 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius3
3.600 mm
da - Cone Frontface Backing Diameter
43.5 mm
db - Cone Backface Backing Diameter
50 mm
Ab - Cage-Cone Frontface Clearance
1.3 mm
Aa - Cage-Cone Backface Clearance
1 mm
a - Effective Center Location4
-8.6 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions)5
27100 N
C1 - Dynamic Radial Rating (1 million revolutions)6
105000 N
C0 - Static Radial Rating
119000 N
C7
17000 N
Factors
K - Factor8
1.6
G1 - Heat Generation Factor (Roller-Raceway)
29.9
G2 - Heat Generation Factor (Rib-Roller End)
11.2
Cg - Geometry Factor9
0.0781
