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30200 Series

30221J2 bearing

  • 30200 Series
  • 30200 Series
Designation :30221J2
Principal dimensions(mm)
d1 :105
D :190
B :39
Basic load ratings(KN)
dyc(Cr) :270
stc(Cor) :355
Pu :40
Speed ratings(rpm)
Speed Ratings :2600
Limiting Speed :3400
Weight(Kg) :4,25
ISO335 
Dimensions (ABMA) :3FB
Dimensions (mm)
d :105
d1~ :141
B :36
C :30
r1,2(min) :3
r3,4(min) :2,5
a :37
Abutment and fillet dimensions (mm)
da(max) :123
db(min) :117
Da(min) :165
Da(max) :178
Db(min) :177
Ca(min) :6
Cb(min) :9
ra(max) :2,5
rb(max) :2
Value
e :0,43
Y :1,4
Yo :0,8

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.