Koyo
FOR REFERENCE ONLY
  • Deep groove ball bearings
  • Double-row
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Bearing No. 4308

Specifications
(Boundary dimensions ...etc)

d(mm)40
D(mm)90
B(mm)33
r(min.)(mm)1.5
Basic load ratings : Cr(kN)57.5
Basic load ratings : C0r(kN)48.8
Fatigue load limit : Cu(kN)3.25
factor : f0()14.7
Limiting speeds(Grease lub.)(min-1)4600
Limiting speeds(Oil lub.)(min-1)6100

Mounting dimensions

Da(max.)(mm)82
ra(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 1.01
JTEKT

2025/05/09