Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Metric series
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Bearing No. 30340D

Specifications
(Boundary 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 e()0.81
Axial load factors : Y1()0.74
Axial load factors : Y0()0.41

Mounting dimensions

da(min.)(mm)228
db(max.)(mm)248
Da(max.)(mm)398
Da(min.)(mm)365
Db(min.)(mm)385
Sa(min.)(mm)11
Sb(min.)(mm)33
ra(max.)(mm)5
rb(max.)(mm)4

Refer.

(Refer.)Mass(kg) 50.6
JTEKT

2025/06/01