Bearing Numbers
Single row :7228A
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 :218000
Cor :234000
Basic load ratings(kgf)
Cr :22300
Cor :23900
Value
fo :15.2
Limiting Speed (rpm)
Grease :2200
Oil :3000
Distance of action point(mm)
a :77.3
Abutment and fillet dimensions
da(min) :154
Da(max) :236
ra(max) :2.5
Weight
(kg) :8.92
Basic load ratings(duplex bearing) (N)
Cr :355000
Cor :470000
Basic load ratings(duplex bearing) (kgf)
Cr :36000
Cor :48000
Limiting Speed(duplex bearing) (rpm)
Grease :1800
Oil :2400
Distance of action point (duplex bearing)(a0)
back-to-back arrangement :154.6
face-to-face arrangement :70.6
Installation dimensions(duplex bearing)
db(min) :-
Db(max) :243
rb(max) :1
