Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 21063/212

Specifications
(Boundary dimensions ...etc)

d(mm)15.875
D(mm)53.975
T(mm)22.225
B(mm)21.839
C(mm)15.875
r(min.)(mm)0.8
r1(min.)(mm)2.4
Basic load ratings : Cr(kN)52.6
Basic load ratings : C0r(kN)41.2
Fatigue load limit : Cu(kN)5.65
Limiting speeds(Grease lub.)(min-1)8400
Limiting speeds(Oil lub.)(min-1)11000
Load center spread : a(mm)16.6
Constant :e()0.59
Axial load factors : Y1()1.02
Axial load factors : Y0()0.56

Mounting dimensions

da(mm)29.0
db(mm)26.5
Da(mm)43.0
Db(mm)50.0
ra(max.)(mm)0.8
rb(max.)(mm)2.4

Refer.

(Refer.)Mass(kg) 0.26
JTEKT

2025/06/01