Koyo
FOR REFERENCE ONLY
  • Rolling mill roll neck bearings
  • Four-row tapered roller bearings
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Bearing No. HM252348D/310/310D

Specifications
(Boundary dimensions ...etc)

d(mm)260.350
D(mm)422.275
T(mm)317.500
W(mm)314.325
r(min.)(mm)3.2
r1(min.)(mm)6.4
Basic load ratings : Cr(kN)3740
Basic load ratings : C0r(kN)6720
Fatigue load limit : Cu(kN)710
Axial load factors : Y2(mm)2.03
Axial load factors : Y3()3.02
Axial load factors : Y0()1.98
Constant e()0.33

Mounting dimensions

da(min.)(mm)304
Da(max.)(mm)407
Da(max.)(mm)384
S(min.)(mm)1
ra(max.)(mm)3.2
rb(max.)(mm)6.4
Axial load factors : Y2(mm)2.03
Axial load factors : Y3()3.02
Axial load factors : Y0()1.98
Constant e()0.33

Refer.

(Refer.)Mass(kg) 167
JTEKT

2025/06/01