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

Bearing No. NNU4934K

Specifications
(Boundary dimensions ...etc)

d(mm)170
D(mm)230
B(mm)60
r(min.)(mm)2
Fw(mm)188.5
Ew(mm)-
Basic load ratings : Cr(kN)451
Basic load ratings : C0r(kN)763
Fatigue load limit : Cu(kN)86.4
Limiting speeds(Grease lub.)(min-1)2300
Limiting speeds(Oil lub.)(min-1)2800

Mounting dimensions

da(min.)(mm)179
da(max.)(mm)186
db(min.)(mm)192
Da(max.)(mm)221
Da(min.)(mm)-
ra(max.)(mm)2

Refer.

(Refer.)Mass(kg) 6.88
JTEKT

2025/06/01