Koyo
FOR REFERENCE ONLY
  • Tapered roller bearings
  • Double-row
  • TDO type
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Bearing No. 46T30311JR/57

Specifications
(Boundary dimensions ...etc)

d(mm)55
D(mm)120
T(mm)70
C(mm)57
r(min.)(mm)2
r1(min.)(mm)0.6
Basic load ratings : Cr(kN)320
Basic load ratings : C0r(kN)341
Fatigue load limit : Cu(kN)53.9
Limiting speeds(Grease lub.)(min-1)2700
Limiting speeds(Oil lub.)(min-1)3600
Constant e()0.35
Axial load factors : Y2()1.96
Axial load factors : Y3()2.91
Axial load factors : Y0()1.91

Mounting dimensions

da(min.)(mm)67
Da(min.)(mm)111
Sa(min.)(mm)6.5
ra(max.)(mm)2
rb(max.)(mm)0.6

Refer.

(Refer.)Mass(kg) 3.57
JTEKT

2025/06/01