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

Bearing No. 30309CR

Specifications
(Boundary dimensions ...etc)

d(mm)45
D(mm)100
T(mm)27.25
B(mm)25
C(mm)20
r(min.)(mm)2
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)136
Basic load ratings : C0r(kN)119
Fatigue load limit : Cu(kN)18.1
Limiting speeds(Grease lub.)(min-1)4100
Limiting speeds(Oil lub.)(min-1)5500
Load center spread : a(mm)25.7
Constant e()0.55
Axial load factors : Y1()1.10
Axial load factors : Y0()0.60

Mounting dimensions

da(min.)(mm)55
db(max.)(mm)57
Da(max.)(mm)90
Da(min.)(mm)81
Db(min.)(mm)94
Sa(min.)(mm)4
Sb(min.)(mm)7
ra(max.)(mm)2
rb(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 1.00
JTEKT

2025/06/01