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


Bearing No. 4TR630B

Specification data (main dimensions, etc.)

d(mm)630
D(mm)920
T(mm)457.15
W(mm)457.15
r(min.)(mm)6
r1(min.)(mm)3
Basic load ratings : Cr(kN)12400
Basic load ratings : C0r(kN)26200
Fatigue load limit : Cu(kN)2230
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)698 mm
Da(max.)(mm)892 mm
Da(max.)(mm)846 mm
S(min.)(mm)11.5 mm
ra(max.)(mm)5 mm
rb(max.)(mm)2.5 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)1050 kg
JTEKT

2026/07/19