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


Bearing No. 48680D/20/20D

Specification data (main dimensions, etc.)

d(mm)139.700
D(mm)200.025
T(mm)160.340
W(mm)157.166
r(min.)(mm)3.3
r1(min.)(mm)0.8
Basic load ratings : Cr(kN)903
Basic load ratings : C0r(kN)1960
Fatigue load limit : Cu(kN)266
Axial load factors : Y2(mm)2.01
Axial load factors : Y32.99
Axial load factors : Y01.96
Constant e0.34

Mounting dimensions,weight (reference)

da(min.)(mm)157 mm
Da(max.)(mm)187 mm
Da(max.)(mm)182 mm
S(min.)(mm)4 mm
ra(max.)(mm)3.3 mm
rb(max.)(mm)0.8 mm
Axial load factors : Y2(mm)2.01 mm
Axial load factors : Y32.99
Axial load factors : Y01.96
Constant e0.34
Mass(Refer.)(kg)16.6 kg
JTEKT

2026/07/19