M249747/M249710 bearing
Bearing NO. :M249747/M249710
Boundary dimensions(mm)
d :257.175
D :358.775
T :71.438
B :76.2
C :53.975
r 1.2min :1.6
r 3.4min :3.2
Basic load ratings(kN)
Cr :773
Cor :1590
Limiting speed(rpm)
Grease :850
Oil :1200
Application point
a :64.4
Abutment and fillet dimensions(mm)
da max :266
db min :279
Da max :330
Db min :342
ra max :1.6
rb max :3.2
Value
e :0.33
Y :1.8
Y0 :0.99
Weight (kg)
Refer :21
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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