Specifications
Series :74000
Cone Part Number : 74555D
Cup Part Number : 74850W
Design Unit : Inch
Cage Material : Stamped Steel
Dimensions
d - Bore : 5 1/2 in / 139.700mm
D - Cup Outer Diameter : 8.5000 in / 215.900 mm
B - Double Cone Width : 4.1875 in / 106.360 mm
C - Cup Width : 1.3750 in / 34.925 mm
T - Bearing Width across Cups : 3.7260 in / 94.640 mm
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius1 : 0.06 in / 1.5mm
r - Cup Backface "To Clear" Radius2 : 0.130 in / 3.30mm
da - Cone Frontface Backing Diameter : 6.06 in / 154mm
Db - Cup Backface Backing Diameter : 7.72 in / 196.09 mm
Ab - Cage-Cone Frontface Clearance : -0.09 in / -2.3 mm
Basic Load Ratings
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 : 19900lbf/ 88400N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4: 134000 lbf /594000 N
C90(2) - Dynamic Radial Rating(Two-Row, 90 million revolutions)5 :34600lbf/ 154000N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 : 16600 lbf /73800 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 : 0.131
