Koyo
FOR REFERENCE ONLY
  • Self-aligning ball bearings
  • Open type


Bearing No. 1304

Specification data (main dimensions, etc.)

d(mm)20
D(mm)52
B(mm)15
r(min.)(mm)1.1
Basic load ratings : Cr(kN)15.5
Basic load ratings : C0r(kN)3.35
Fatigue load limit : Cu(kN)0.21
Limiting speeds(Grease lub.)(min-1)13000
Limiting speeds(Oil lub.)(min-1)15000
Constant :e0.30
Axial load factors : Y12.12
Axial load factors : Y23.28
Axial load factors : Y02.22

Mounting dimensions,weight (reference)

da(min.)(mm)26.5 mm
Da(max.)(mm)45.5 mm
ra(max.)(mm)1 mm
Mass(Refer.)(kg)0.163 kg
JTEKT

2026/07/05