Koyo
FOR REFERENCE ONLY
  • Self-aligning ball bearings
  • Open type
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Bearing No. 1203

Specifications
(Boundary dimensions ...etc)

d(mm)17
D(mm)40
B(mm)12
r(min.)(mm)0.6
Basic load ratings : Cr(kN)9.85
Basic load ratings : C0r(kN)2.05
Fatigue load limit : Cu(kN)0.13
Limiting speeds(Grease lub.)(min-1)16000
Limiting speeds(Oil lub.)(min-1)20000
Constant :e()0.31
Axial load factors : Y1()2.03
Axial load factors : Y2()3.14
Axial load factors : Y0()2.12

Mounting dimensions

da(min.)(mm)21
Da(max.)(mm)36
ra(max.)(mm)0.6

Refer.

(Refer.)Mass(kg) 0.073
JTEKT

2025/05/16