Bearing Numbers
Single row :7221A
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 :157000
Cor :142000
Basic load ratings(kgf)
Cr :16000
Cor :14400
Value
fo :15
Limiting Speed (rpm)
Grease :3800
Oil :5000
Distance of action point(mm)
a :60.6
Abutment and fillet dimensions
da(min) :117
Da(max) :178
ra(max) :2
Weight
(kg) :3.84
Basic load ratings(duplex bearing) (N)
Cr :254000
Cor :283000
Basic load ratings(duplex bearing) (kgf)
Cr :25900
Cor :28900
Limiting Speed(duplex bearing) (rpm)
Grease :3000
Oil :4000
Distance of action point (duplex bearing)(a0)
back-to-back arrangement :121.2
face-to-face arrangement :49.2
Installation dimensions(duplex bearing)
db(min) :112
Db(max) :183
rb(max) :1
