Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
>

Bearing No. 30210CR

Specifications
(Boundary dimensions ...etc)

d(mm)50
D(mm)90
T(mm)21.75
B(mm)20
C(mm)16
r(min.)(mm)1.5
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)96.7
Basic load ratings : C0r(kN)95.8
Fatigue load limit : Cu(kN)14.3
Limiting speeds(Grease lub.)(min-1)4300
Limiting speeds(Oil lub.)(min-1)5700
Load center spread : a(mm)22.7
Constant e()0.55
Axial load factors : Y1()1.10
Axial load factors : Y0()0.60

Mounting dimensions

da(min.)(mm)58.5
db(max.)(mm)58
Da(max.)(mm)81.5
Da(min.)(mm)76
Db(min.)(mm)86
Sa(min.)(mm)4
Sb(min.)(mm)5.5
ra(max.)(mm)1.5
rb(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 0.590
JTEKT

2025/06/01