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


Bearing No. 4TR19B

Specification data (main dimensions, etc.)

d(mm)482.600
D(mm)615.950
T(mm)330.200
W(mm)330.200
r(min.)(mm)6.4
r1(min.)(mm)4.8
Basic load ratings : Cr(kN)5670
Basic load ratings : C0r(kN)15000
Fatigue load limit : Cu(kN)1340
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)509 mm
Da(max.)(mm)593 mm
Da(max.)(mm)573 mm
S(min.)(mm)10.5 mm
ra(max.)(mm)6.4 mm
rb(max.)(mm)4.8 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)243 kg
JTEKT

2026/07/21