31300 Series
  • 31300 Series
  • 31300 Series

31300 Series

Tapered roller bearings have tapered inner and outer raceways and rollers to handle simultaneous radial and thrust loads. Their axial load carrying capacity is directly related to the contact angle of the rollers and raceway shaft. 

They are available in single-row, double-row, and four-row designs. The individual parts of tapered roller bearings are commonly sold separately as cups and cones. Cones contain the roller assembly and inner ring while cups include the outer ring. Full assembly units contain both the cup and cone. As separable bearings, different designs and sizes are available to accommodate a variety of applications.


Dimension and Parameters
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31300 Series 31300 Series
31312J2/QCL7C
  • Designation
    31312J2/QCL7C
  • Principal dimensions(mm)
  • d1
    60
  • D
    130
  • B
    33.5
  • Basic load ratings(KN)
  • dyc(Cr)
    166
  • stc(Cor)
    166
  • Pu
    20.4
  • Speed ratings(rpm)
  • Speed Ratings
    3800
  • Limiting Speed
    5300
  • Weight(Kg)
    1.90
  • ISO335 
  • Dimensions (ABMA)
    7FB
  • Dimensions (mm)
  • d
    60
  • d1~
    95.9
  • B
    31
  • C
    22
  • r1,2(min)
    3
  • r3,4(min)
    2.5
  • a
    39
  • Abutment and fillet dimensions (mm)
  • da(max)
    74
  • db(min)
    72
  • Da(min)
    103
  • Da(max)
    118
  • Db(min)
    123
  • Ca(min)
    5
  • Cb(min)
    11.5
  • ra(max)
    2.5
  • rb(max)
    2
  • Value
  • e
    0.83
  • Y
    0.72
  • Yo
    0.4