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


Bearing No. M238849D/810/810D

Specification data (main dimensions, etc.)

d(mm)187.325
D(mm)269.875
T(mm)211.138
W(mm)211.138
r(min.)(mm)3.2
r1(min.)(mm)1.6
Basic load ratings : Cr(kN)1510
Basic load ratings : C0r(kN)3220
Fatigue load limit : Cu(kN)367
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)206 mm
Da(max.)(mm)257 mm
Da(max.)(mm)245 mm
S(min.)(mm)5 mm
ra(max.)(mm)3.2 mm
rb(max.)(mm)1.6 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)39.5 kg
JTEKT

2026/07/19