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


Bearing No. LM247748D/710/710D

Specification data (main dimensions, etc.)

d(mm)244.475
D(mm)327.025
T(mm)193.675
W(mm)193.675
r(min.)(mm)3.2
r1(min.)(mm)1.6
Basic load ratings : Cr(kN)1690
Basic load ratings : C0r(kN)3780
Fatigue load limit : Cu(kN)406
Axial load factors : Y2(mm)2.10
Axial load factors : Y33.13
Axial load factors : Y02.06
Constant e0.32

Mounting dimensions,weight (reference)

da(min.)(mm)265 mm
Da(max.)(mm)313 mm
Da(max.)(mm)305 mm
S(min.)(mm)7.5 mm
ra(max.)(mm)3.2 mm
rb(max.)(mm)1.6 mm
Axial load factors : Y2(mm)2.10 mm
Axial load factors : Y33.13
Axial load factors : Y02.06
Constant e0.32
Mass(Refer.)(kg)44.4 kg
JTEKT

2026/07/19