Bearing Numbers
Single row :7221C
DB :7221DB
DF :7221DF
DT :7221DT
Principal dimensions(mm)
d :105
D :190
B :36
r(min) :2.1
r1(min) :1.1
Basic load ratings(N)
Cr :162000
Cor :143000
Basic load ratings(kgf)
Cr :16600
Cor :14600
Value
fo :14.5
Limiting Speed (rpm)
Grease :5300
Oil :7500
Distance of action point(mm)
a :37.7
Abutment and fillet dimensions
da(min) :117
Da(max) :178
ra(max) :2
Weight
(kg) :4.33
Basic load ratings(duplex bearing) (N)
Cr :264000
Cor :286000
Basic load ratings(duplex bearing) (kgf)
Cr :26900
Cor :29100
Limiting Speed(duplex bearing) (rpm)
Grease :4300
Oil :6000
Distance of action point (duplex bearing)(a0)
back-to-back arrangement :75.5
face-to-face arrangement :3.5
Installation dimensions(duplex bearing)
db(min) :-
Db(max) :183
rb(max) :1
