Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Single-row
  • Inch series
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Bearing No. 12168/303

Specifications
(Boundary dimensions ...etc)

d(mm)42.862
D(mm)76.992
T(mm)17.463
B(mm)17.145
C(mm)11.908
r(min.)(mm)1.6
r1(min.)(mm)1.6
Basic load ratings : Cr(kN)60.8
Basic load ratings : C0r(kN)62.2
Fatigue load limit : Cu(kN)8.95
Limiting speeds(Grease lub.)(min-1)5000
Limiting speeds(Oil lub.)(min-1)6600
Load center spread : a(mm)17.5
Constant :e()0.51
Axial load factors : Y1()1.19
Axial load factors : Y0()0.65

Mounting dimensions

da(mm)51.0
db(mm)48.5
Da(mm)68.0
Db(mm)73.0
ra(max.)(mm)1.6
rb(max.)(mm)1.6

Refer.

(Refer.)Mass(kg) 0.317
JTEKT

2025/06/01