31300 Series

31311J2/QCL7C

  • 31300 Series
  • 31300 Series
  • 31300 Series

Description



Tapered roller bearings feature a cup and cone assembly. The cup is comprised of the outer ring and the cone assembly consists of inner ring, rollers, and cage. This bearing construction accommodates combined loads and provides low friction during operation. By adjusting one single row tapered roller bearing against a second tapered roller bearing and applying a preload, a rigid bearing application can be achieved.

Tapered toller bearing have four types :

1.Single row tapered roller bearing

2.Matched tapered roller bearing

3.Double-row tapered roller bearing 

4.Four-row tapered roller bearing 


Dimension and Parameters

Designation :31311J2/QCL7C
Principal dimensions(mm)
d1 :55
D :120
B :31,5
Basic load ratings(KN)
dyc(Cr) :140
stc(Cor) :137
Pu :16,6
Speed ratings(rpm)
Speed Ratings :4300
Limiting Speed :5600
Weight(Kg) :1,55
ISO335 
Dimensions (ABMA) :7FB
Dimensions (mm)
d :55
d1~ :88,4
B :29
C :21
r1,2(min) :2,5
r3,4(min) :2
a :37
Abutment and fillet dimensions (mm)
da(max) :68
db(min) :65
Da(min) :94
Da(max) :112
Db(min) :113
Ca(min) :4
Cb(min) :10,5
ra(max) :2
rb(max) :2
Value
e :0,83
Y :0,72
Yo :0,4
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