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25-year production experience

d:
D:
B:
7300 Series

7300 Series

Dimension and Parameters

Bearing Numbers
Single row :7321B
DB :7321DB
DF :7321DF
DT :7321DT
Principal dimensions(mm)
d :105
D :225
B :49
r(min) :3
r1(min) :1.1
Basic load ratings(N)
Cr :191000
Cor :177000
Basic load ratings(kgf)
Cr :19400
Cor :18100
Value
fo :14.5
Limiting Speed (rpm)
Grease :2400
Oil :3200
Distance of action point(mm)
a :93.7
Abutment and fillet dimensions
da(min) :119
Da(max) :211
ra(max) :2.5
Weight
(kg) :9.43
Basic load ratings(duplex bearing) (N)
Cr :310000
Cor :355000
Basic load ratings(duplex bearing) (kgf)
Cr :31500
Cor :36000
Limiting Speed(duplex bearing) (rpm)
Grease :1900
Oil :2600
Distance of action point (duplex bearing)(a0)
back-to-back arrangement :187.4
face-to-face arrangement :89.4
Installation dimensions(duplex bearing)
db(min) :-
Db(max) :218
rb(max) :1