Inch Series

M278749/M278710

  • Inch Series
  • Inch 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.

Dimension and Parameters

Bearing NO. :M278749/M278710
Boundary dimensions(mm)
d :571.5
D :812.8
T :155.575
B :155.575
C :120.65
r 1.2min :6.4
r 3.4min :6.4
Basic load ratings(kN)
Cr :4000
Cor :9300
Limiting speed(rpm)
Grease :370
Oil :470
Application point
a :143.6
Abutment and fillet dimensions(mm)
da max :634
db min :601
Da max :759
Db min :790
ra max :6.4
rb max :6.4
Value
e :0.33
Y :1.8
Y0 :0.99
Weight (kg)
Refer :256