Koyo
FOR REFERENCE ONLY
  • Deep groove ball bearings
  • Single-row
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Bearing No. 6304NR

Specifications
(Boundary dimensions ...etc)

d(mm)20
D(mm)52
B(mm)15
r(min.)(mm)1.1
r1(min.)(mm)0.5
Basic load ratings : Cr(kN)19.9
Basic load ratings : C0r(kN)7.85
Fatigue load limit : Cu(kN)0.660
factor : f0()12.3
Limiting speeds(Grease lub.)(min-1)14000
Limiting speeds(Oil lub.)(min-1)17000
Dimensions of snap ring groove : D1(max.)(mm)
Dimensions of snap ring groove : a(max.)(mm)
Dimensions of snap ring groove : b(±0.05)(mm)
Dimensions of snap ring groove : r0(max.)(mm)
Dimensions of locating snap ring : D2(min.)(mm)57.9
Dimensions of locating snap ring : f(±0.05)(mm)1.07

Mounting dimensions

da(min.)(mm)26.5
Da(max.)(mm)45.5
Dx(min.)(mm)58.5
Cy(max.)(mm)3.33
ra(max.)(mm)1
rb(max.)(mm)0.5

Refer.

(Refer.)Mass(kg) 0.144
JTEKT

2025/05/10