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


Bearing No. M272647D/610/610D

Specification data (main dimensions, etc.)

d(mm)482.600
D(mm)647.700
T(mm)417.512
W(mm)417.512
r(min.)(mm)6.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)7910
Basic load ratings : C0r(kN)20300
Fatigue load limit : Cu(kN)1770
Axial load factors : Y2(mm)2.03
Axial load factors : Y33.02
Axial load factors : Y01.98
Constant e0.33

Mounting dimensions,weight (reference)

da(min.)(mm)514 mm
Da(max.)(mm)624 mm
Da(max.)(mm)604 mm
S(min.)(mm)9.5 mm
ra(max.)(mm)6.4 mm
rb(max.)(mm)3.2 mm
Axial load factors : Y2(mm)2.03 mm
Axial load factors : Y33.02
Axial load factors : Y01.98
Constant e0.33
Mass(Refer.)(kg)395 kg
JTEKT

2026/07/19