74511X/74854 bearing
Bearing NO. :74511X/74854
Boundary dimensions(mm)
d :130
D :215.9
T :47.625
B :47.625
C :34.925
r 1.2min :3.6
r 3.4min :3.2
Basic load ratings(kN)
Cr :322
Cor :549
Limiting speed(rpm)
Grease :1700
Oil :2200
Application point
a :49.7
Abutment and fillet dimensions(mm)
da max :142
db min :156
Da max :193
Db min :205
ra max :3.6
rb max :3.2
Value
e :0.49
Y :1.23
Y0 :0.68
Weight (kg)
Refer :6.6
Tapered roller bearings are made of inner races called cones and outer races call cups. They are called tapered roller bearings because the cone assembly is narrower in one end and the races are built with one side narrower as well to match the rollers. This bearing construction is ideal for environments where high speed and heavy loads occur, and a low friction is needed. Tapered roller bearings are widely used in applications like automotive, rail, gearboxes, agriculture, machine tools, construction and more.
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