Koyo
FOR REFERENCE ONLY
  • Cylindrical roller bearings
  • Single-row
  • NNU
  • Tapered type
>

Bearing No. NNU4960K

Specifications
(Boundary dimensions ...etc)

d(mm)300
D(mm)420
B(mm)118
r(min.)(mm)3
Fw(mm)339
Ew(mm)-
Basic load ratings : Cr(kN)1470
Basic load ratings : C0r(kN)2720
Fatigue load limit : Cu(kN)285
Limiting speeds(Grease lub.)(min-1)1100
Limiting speeds(Oil lub.)(min-1)1300

Mounting dimensions

da(min.)(mm)313
da(max.)(mm)335
db(min.)(mm)343
Da(max.)(mm)407
Da(min.)(mm)-
ra(max.)(mm)2.5

Refer.

(Refer.)Mass(kg) 49.7
JTEKT

2025/06/01