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

Bearing No. 30306DJR

Specifications
(Boundary dimensions ...etc)

d(mm)30
D(mm)72
T(mm)20.75
B(mm)19
C(mm)14
r(min.)(mm)1.5
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)63.5
Basic load ratings : C0r(kN)54.9
Fatigue load limit : Cu(kN)7.70
Limiting speeds(Grease lub.)(min-1)4900
Limiting speeds(Oil lub.)(min-1)6800
Load center spread : a(mm)23.7
Constant e()0.83
Axial load factors : Y1()0.73
Axial load factors : Y0()0.40

Mounting dimensions

da(min.)(mm)38.5
db(max.)(mm)40
Da(max.)(mm)63.5
Da(min.)(mm)55
Db(min.)(mm)68
Sa(min.)(mm)3
Sb(min.)(mm)6.5
ra(max.)(mm)1.5
rb(max.)(mm)1.5

Refer.

(Refer.)Mass(kg) 0.400
JTEKT

2025/05/17