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


Bearing No. 47T372721B

Specification data (main dimensions, etc.)

d(mm)187
D(mm)270
T(mm)210
W(mm)210
r(min.)(mm)2.5
r1(min.)(mm)1
Basic load ratings : Cr(kN)1780
Basic load ratings : C0r(kN)3570
Fatigue load limit : Cu(kN)409
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)205 mm
Da(max.)(mm)258 mm
Da(max.)(mm)248 mm
S(min.)(mm)8 mm
ra(max.)(mm)2 mm
rb(max.)(mm)1 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)39.1 kg
JTEKT

2026/07/21