Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 303/22R

Specifications
(Boundary dimensions ...etc)

d(mm)22
D(mm)56
T(mm)17.25
B(mm)16
C(mm)14
r(min.)(mm)1.5
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)52.2
Basic load ratings : C0r(kN)41.1
Fatigue load limit : Cu(kN)5.95
Limiting speeds(Grease lub.)(min-1)7500
Limiting speeds(Oil lub.)(min-1)10000
Load center spread : a(mm)12.2
Constant e()0.31
Axial load factors : Y1()1.97
Axial load factors : Y0()1.08

Mounting dimensions

da(min.)(mm)30.5
db(max.)(mm)32
Da(max.)(mm)47.5
Da(min.)(mm)47
Db(min.)(mm)51
Sa(min.)(mm)2
Sb(min.)(mm)3
ra(max.)(mm)1.5
rb(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 0.216
JTEKT

2025/06/01