Bearing Numbers
Single row :7921C
DB :7921DB
DF :7921DF
DT :7921DT
Principal dimensions(mm)
d :105
D :145
B :20
r(min) :1.1
r1(min) :0.6
Basic load ratings(N)
Cr :51000
Cor :57000
Basic load ratings(kgf)
Cr :5200
Cor :5800
Value
fo :16.5
Limiting Speed (rpm)
Grease :6300
Oil :9000
Distance of action point(mm)
a :26.7
Abutment and fillet dimensions
da(min) :112
Da(max) :138
ra(max) :1
Weight
(kg) :0.826
Basic load ratings(duplex bearing) (N)
Cr :83000
Cor :114000
Basic load ratings(duplex bearing) (kgf)
Cr :8450
Cor :11600
Limiting Speed(duplex bearing) (rpm)
Grease :5300
Oil :7100
Distance of action point (duplex bearing)(a0)
back-to-back arrangement :53.5
face-to-face arrangement :13.5
Installation dimensions(duplex bearing)
db(min) :-
Db(max) :140
rb(max) :0.6
