Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30205XR

Specifications
(Boundary dimensions ...etc)

d(mm)25
D(mm)52
T(mm)16.25
B(mm)15
C(mm)12
r(min.)(mm)1
r1(min.)(mm)1
Basic load ratings : Cr(kN)38.0
Basic load ratings : C0r(kN)32.4
Fatigue load limit : Cu(kN)4.45
Limiting speeds(Grease lub.)(min-1)7900
Limiting speeds(Oil lub.)(min-1)11000
Load center spread : a(mm)14.9
Constant e()0.58
Axial load factors : Y1()1.04
Axial load factors : Y0()0.57

Mounting dimensions

da(min.)(mm)30.5
db(max.)(mm)30
Da(max.)(mm)46.5
Da(min.)(mm)41
Db(min.)(mm)49
Sa(min.)(mm)2
Sb(min.)(mm)4
ra(max.)(mm)1
rb(max.)(mm)1

Refer.

(Refer.)Mass(kg) 0.155
JTEKT

2025/06/01