Koyo
FOR REFERENCE ONLY
  • Deep groove ball bearings
  • Single-row
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Bearing No. 6312NR

Specifications
(Boundary dimensions ...etc)

d(mm)60
D(mm)130
B(mm)31
r(min.)(mm)2.1
r1(min.)(mm)0.5
Basic load ratings : Cr(kN)102
Basic load ratings : C0r(kN)52.2
Fatigue load limit : Cu(kN)3.95
factor : f0()13.2
Limiting speeds(Grease lub.)(min-1)5200
Limiting speeds(Oil lub.)(min-1)6200
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)139.7
Dimensions of locating snap ring : f(±0.05)(mm)2.77

Mounting dimensions

da(min.)(mm)71
Da(max.)(mm)119
Dx(min.)(mm)141.5
Cy(max.)(mm)6.58
ra(max.)(mm)2
rb(max.)(mm)0.5

Refer.

(Refer.)Mass(kg) 1.70
JTEKT

2025/05/10