31300 Series

31300 Series

31309J2/QCL7C

Description

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

31300 Series 31300 Series
Designation :31309J2/QCL7C
Principal dimensions(mm)
d1 :45
D :100
B :27,25
Basic load ratings(KN)
dyc(Cr) :106
stc(Cor) :102
Pu :12,5
Speed ratings(rpm)
Speed Ratings :5000
Limiting Speed :6700
Weight(Kg) :0,95
ISO335 
Dimensions (ABMA) :7FB
Dimensions (mm)
d :45
d1~ :74,7
B :25
C :18
r1,2(min) :2
r3,4(min) :1,5
a :31
Abutment and fillet dimensions (mm)
da(max) :57
db(min) :53
Da(min) :79
Da(max) :91
Db(min) :95
Ca(min) :4
Cb(min) :9
ra(max) :2
rb(max) :1,5
Value
e :0,83
Y :0,72
Yo :0,4