Koyo
FOR REFERENCE ONLY
  • Cylindrical roller bearings
  • Single-row
  • NU
>

Bearing No. NU304R

Specifications
(Boundary dimensions ...etc)

d(mm)20
D(mm)52
B(mm)15
r(min.)(mm)1.1
r1(min.)(mm)0.6
Fw(mm)27.5
Ew(mm)-
Basic load ratings : Cr(kN)39.4
Basic load ratings : C0r(kN)26.9
Fatigue load limit : Cu(kN)3.75
Limiting speeds(Grease lub.)(min-1)12000
Limiting speeds(Oil lub.)(min-1)16000
sd1(mm)-
B1(mm)-
B2(mm)-

Mounting dimensions

da(min.)(mm)-
db(min.)(mm)24
db(max.)(mm)27
dc(min.)(mm)-
dd(min.)(mm)-
Da(max.)(mm)45.5
Db(max.)(mm)-
Db(min.)(mm)-
ra(max.)(mm)1
rb(max.)(mm)0.6

Refer.

(Refer.)Mass(kg) 0.153
JTEKT

2025/05/31