Bearing Numbers
Single row :7221B
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 :142000
Cor :129000
Basic load ratings(kgf)
Cr :14500
Cor :13100
Value
fo :15.4
Limiting Speed (rpm)
Grease :2600
Oil :3600
Distance of action point(mm)
a :79.9
Abutment and fillet dimensions
da(min) :117
Da(max) :178
ra(max) :2
Weight
(kg) :3.92
Basic load ratings(duplex bearing) (N)
Cr :231000
Cor :258000
Basic load ratings(duplex bearing) (kgf)
Cr :23500
Cor :26300
Limiting Speed(duplex bearing) (rpm)
Grease :2200
Oil :3000
Distance of action point (duplex bearing)(a0)
back-to-back arrangement :159.8
face-to-face arrangement :87.8
Installation dimensions(duplex bearing)
db(min) :112
Db(max) :183
rb(max) :1
