Koyo
FOR REFERENCE ONLY
  • Cylindrical roller bearings
  • Single-row
  • N
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Bearing No. N309

Specifications
(Boundary dimensions ...etc)

d(mm)45
D(mm)100
B(mm)25
r(min.)(mm)1.5
r1(min.)(mm)1.5
Fw(mm)-
Ew(mm)86.5
Basic load ratings : Cr(kN)98.5
Basic load ratings : C0r(kN)77.5
Fatigue load limit : Cu(kN)11.3
Limiting speeds(Grease lub.)(min-1)6200
Limiting speeds(Oil lub.)(min-1)8300
sd1(mm)-
B1(mm)-
B2(mm)-

Mounting dimensions

da(min.)(mm)53
db(min.)(mm)-
db(max.)(mm)-
dc(min.)(mm)-
dd(min.)(mm)-
Da(max.)(mm)-
Db(max.)(mm)92
Db(min.)(mm)89
ra(max.)(mm)1.5
rb(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 0.853
JTEKT

2025/06/16