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31300 Series

31318J2 bearing

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  • 31300 Series
  • 31300 Series
Designation :31318J2
Principal dimensions（mm）
d1 :90
D :190
B :46,5
Basic load ratings（KN）
dyc(Cr) :264
stc(Cor) :315
Pu :36,5
Speed ratings（rpm）
Speed Ratings :2400
Limiting Speed :3400
Weight(Kg) :5,90
ISO335 
Dimensions (ABMA) :7GB
Dimensions （mm）
d :90
d1～ :138
B :43
C :30
r1,2(min) :4
r3,4(min) :3
a :57
Abutment and fillet dimensions （mm）
da(max) :109
db(min) :105
Da(min) :151
Da(max) :176
Db(min) :179
Ca(min) :5
Cb(min) :16,5
ra(max) :3
rb(max) :2,5
Value
e :0,83
Y :0,72
Yo :0,4

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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