Koyo
FOR REFERENCE ONLY
  • Cylindrical roller bearings
  • Single-row
  • NJ
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Bearing No. NJ256

Specifications
(Boundary dimensions ...etc)

d(mm)280
D(mm)500
B(mm)80
r(min.)(mm)5
r1(min.)(mm)5
Fw(mm)340
Ew(mm)-
Basic load ratings : Cr(kN)1430
Basic load ratings : C0r(kN)1680
Fatigue load limit : Cu(kN)179
Limiting speeds(Grease lub.)(min-1)1000
Limiting speeds(Oil lub.)(min-1)1200
sd1(mm)-
B1(mm)-
B2(mm)-

Mounting dimensions

da(min.)(mm)-
db(min.)(mm)300
db(max.)(mm)336
dc(min.)(mm)-
dd(min.)(mm)-
Da(max.)(mm)480
Db(max.)(mm)-
Db(min.)(mm)-
ra(max.)(mm)4
rb(max.)(mm)4

Refer.

(Refer.)Mass(kg) 74.4
JTEKT

2025/06/01