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31300 Series

31317J2 bearing

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  • 31300 Series
  • 31300 Series
Designation :31317J2
Principal dimensions（mm）
d1 :85
D :180
B :44,5
Basic load ratings（KN）
dyc(Cr) :242
stc(Cor) :285
Pu :33,5
Speed ratings（rpm）
Speed Ratings :2600
Limiting Speed :3800
Weight(Kg) :4,60
ISO335 
Dimensions (ABMA) :7GB
Dimensions （mm）
d :85
d1～ :131
B :41
C :28
r1,2(min) :4
r3,4(min) :3
a :55
Abutment and fillet dimensions （mm）
da(max) :103
db(min) :99
Da(min) :143
Da(max) :166
Db(min) :169
Ca(min) :6
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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