M255448/M255411 bearing
Bearing NO. :M255448/M255411
Boundary dimensions(mm)
d :288.925
D :406.949
T :77.907
B :77.788
C :61
r 1.2min :9.5
r 3.4min :3.6
Basic load ratings(kN)
Cr :1010
Cor :2210
Limiting speed(rpm)
Grease :850
Oil :1200
Application point
a :73.3
Abutment and fillet dimensions(mm)
da max :314
db min :318
Da max :374
Db min :388
ra max :9.5
rb max :3.6
Value
e :0.34
Y :1.77
Y0 :0.98
Weight (kg)
Refer :31.1
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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