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


Bearing No. 30317R

Specification data (main dimensions, etc.)

d(mm)85
D(mm)180
T(mm)44.5
B(mm)41
C(mm)34
r(min.)(mm)4
r1(min.)(mm)3
Basic load ratings : Cr(kN)381
Basic load ratings : C0r(kN)367
Fatigue load limit : Cu(kN)51.1
Limiting speeds(Grease lub.)(min-1)2200
Limiting speeds(Oil lub.)(min-1)2900
Load center spread : a(mm)35.8
Constant e0.35
Axial load factors : Y11.73
Axial load factors : Y00.95

Mounting dimensions,weight (reference)

da(min.)(mm)103 mm
db(max.)(mm)107 mm
Da(max.)(mm)166 mm
da(min.)(mm)156 mm
db(min.)(mm)167 mm
Sa(min.)(mm)5 mm
Sb(min.)(mm)10.5 mm
ra(max.)(mm)3 mm
rb(max.)(mm)2.5 mm
Mass(Refer.)(kg)4.97 kg
JTEKT

2026/07/05