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31300 Series

31328XJ2 bearing

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  • 31300 Series
  • 31300 Series
Designation :31328XJ2
Principal dimensions（mm）
d1 :140
D :300
B :77
Basic load ratings（KN）
dyc(Cr) :693
stc(Cor) :900
Pu :88
Speed ratings（rpm）
Speed Ratings :1500
Limiting Speed :2200
Weight(Kg) :24,5
ISO335 
Dimensions (ABMA) :7GB
Dimensions （mm）
d :140
d1～ :219
B :70
C :47
r1,2(min) :5
r3,4(min) :4
a :90
Abutment and fillet dimensions （mm）
da(max) :169
db(min) :160
Da(min) :235
Da(max) :283
Db(min) :280
Ca(min) :9
Cb(min) :30
ra(max) :4
rb(max) :3
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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