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


Bearing No. 30307DJR

Specification data (main dimensions, etc.)

d(mm)35
D(mm)80
T(mm)22.75
B(mm)21
C(mm)15
r(min.)(mm)2
r1(min.)(mm)1.5
Basic load ratings : Cr(kN)78.7
Basic load ratings : C0r(kN)69.1
Fatigue load limit : Cu(kN)9.85
Limiting speeds(Grease lub.)(min-1)4300
Limiting speeds(Oil lub.)(min-1)6000
Load center spread : a(mm)26.8
Constant e0.83
Axial load factors : Y10.73
Axial load factors : Y00.40

Mounting dimensions,weight (reference)

da(min.)(mm)45 mm
db(max.)(mm)44 mm
Da(max.)(mm)70 mm
da(min.)(mm)66 mm
db(min.)(mm)76.5 mm
Sa(min.)(mm)3 mm
Sb(min.)(mm)7.5 mm
ra(max.)(mm)2 mm
rb(max.)(mm)1.5 mm
Mass(Refer.)(kg)0.536 kg
JTEKT

2026/07/04