Bearing Numbers
Single row :7228B
DB :7228DB
DF :7228DF
DT :7228DT
Principal dimensions(mm)
d :140
D :250
B :42
r(min) :3
r1(min) :1.1
Basic load ratings(N)
Cr :197000
Cor :213000
Basic load ratings(kgf)
Cr :20100
Cor :21700
Value
fo :15.6
Limiting Speed (rpm)
Grease :2000
Oil :2800
Distance of action point(mm)
a :102.8
Abutment and fillet dimensions
da(min) :154
Da(max) :236
ra(max) :2.5
Weight
(kg) :8.94
Basic load ratings(duplex bearing) (N)
Cr :320000
Cor :425000
Basic load ratings(duplex bearing) (kgf)
Cr :32500
Cor :43500
Limiting Speed(duplex bearing) (rpm)
Grease :1600
Oil :2200
Distance of action point (duplex bearing)(a0)
back-to-back arrangement :205.6
face-to-face arrangement :121.6
Installation dimensions(duplex bearing)
db(min) :-
Db(max) :243
rb(max) :1
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