Timken 74512D – 74850W
Tapered Roller Bearings - TDI (Tapered Double Inner) Imperial
(BRAND)：TIMKEN
(Availability)：In Stock
Specifications
Series
74000
Cone Part Number
74512D
Cup Part Number
74850W
Design Unit
Inch
Cage Material
Stamped Steel
Dimensions
d - Bore
130.175 mm
D - Cup Outer Diameter
215.900 mm
B - Double Cone Width
101.600 mm
C - Cup Width
34.925 mm
T - Bearing Width across Cups
101.600 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1
1.5 mm
r - Cup Backface "To Clear" Radius2
3.30 mm
da - Cone Frontface Backing Diameter
146 mm
Db - Cup Backface Backing Diameter
196.09 mm
Ab - Cage-Cone Frontface Clearance
2.8 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3
99000 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4
665000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5
172000 N
C6
82600 N
Factors
K - Factor7
1.2
e - ISO Factor8
0.49
Y1 - ISO Factor9
1.38
Y2 - ISO Factor10
2.06
G1 - Heat Generation Factor (Roller-Raceway)
363
G2 - Heat Generation Factor (Rib-Roller End)
68.5
Cg - Geometry Factor11
0.134
