Koyo
FOR REFERENCE ONLY
  • Rolling mill roll neck bearings
  • Four-row cylindrical roller bearings
>

Bearing No. 312943/1YD

Specifications
(Boundary dimensions ...etc)

d(mm)240
D(mm)330
B(mm)220
C(mm)220
Fw(mm)270
r(min.)(mm)3
r1(min.)(mm)3
Basic load ratings : Cr(kN)1900
Basic load ratings : C0r(kN)4250
Fatigue load limit : Cu(kN)471

Mounting dimensions

da(min.)(mm)254
Da(max.)(mm)316
da(min.)(mm)310
ra(max.)(mm)2.5
rb(max.)(mm)2.5

Refer.

(Refer.)Mass(kg) 55.5
JTEKT

2025/06/01