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


Bearing No. 30317D

Specification data (main dimensions, etc.)

d(mm)85
D(mm)180
T(mm)44.5
B(mm)41
C(mm)28
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)288
Basic load ratings : C0r(kN)265
Fatigue load limit : Cu(kN)36.0
Limiting speeds(Grease lub.)(min-1)1900
Limiting speeds(Oil lub.)(min-1)2600
Load center spread : a(mm)56.0
Constant e0.81
Axial load factors : Y10.74
Axial load factors : Y00.41

Mounting dimensions,weight (reference)

da(min.)(mm)103 mm
db(max.)(mm)103 mm
Da(max.)(mm)166 mm
da(min.)(mm)143 mm
db(min.)(mm)169 mm
Sa(min.)(mm)6 mm
Sb(min.)(mm)16.5 mm
ra(max.)(mm)3 mm
rb(max.)(mm)2.5 mm
Mass(Refer.)(kg)4.54 kg
JTEKT

2026/07/07