M278749/M278710 bearing
Bearing NO. :M278749/M278710
Boundary dimensions(mm)
d :571.6
D :812.8
T :155.575
B :158.75
C :120.65
r 1.2min :6.4
r 3.4min :6.4
Basic load ratings(kN)
Cr :3790
Cor :8760
Limiting speed(rpm)
Grease :370
Oil :470
Application point
a :143.2
Abutment and fillet dimensions(mm)
da max :595
db min :630
Da max :750
Db min :775
ra max :6.4
rb max :6.4
Value
e :0.33
Y :1.8
Y0 :0.99
Weight (kg)
Refer :254
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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