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

Bearing No. NH304R

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)31.4
B1(mm)4
B2(mm)6.5

Mounting dimensions

da(min.)(mm)26.5
db(min.)(mm)-
db(max.)(mm)-
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) 0.175
JTEKT

2025/06/01