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


Bearing No. 30340D

Specification data (main dimensions, etc.)

d(mm)200
D(mm)420
T(mm)89
B(mm)80
C(mm)56
r(min.)(mm)6
r1(min.)(mm)5
Basic load ratings : Cr(kN)1130
Basic load ratings : C0r(kN)1230
Fatigue load limit : Cu(kN)132
Limiting speeds(Grease lub.)(min-1)690
Limiting speeds(Oil lub.)(min-1)970
Load center spread : a(mm)122.6
Constant e0.81
Axial load factors : Y10.74
Axial load factors : Y00.41

Mounting dimensions,weight (reference)

da(min.)(mm)228 mm
db(max.)(mm)248 mm
Da(max.)(mm)398 mm
da(min.)(mm)365 mm
db(min.)(mm)385 mm
Sa(min.)(mm)11 mm
Sb(min.)(mm)33 mm
ra(max.)(mm)5 mm
rb(max.)(mm)4 mm
Mass(Refer.)(kg)50.6 kg
JTEKT

2026/07/27