Koyo
FOR REFERENCE ONLY
  • Rolling mill roll neck bearings
  • Four-row tapered roller bearings
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Bearing No. LM778549D/510/510D

Specifications
(Boundary dimensions ...etc)

d(mm)584.200
D(mm)762.000
T(mm)401.638
W(mm)396.875
r(min.)(mm)6.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)7880
Basic load ratings : C0r(kN)20800
Fatigue load limit : Cu(kN)1770
Axial load factors : Y2(mm)1.43
Axial load factors : Y3()2.12
Axial load factors : Y0()1.40
Constant e()0.47

Mounting dimensions

da(min.)(mm)617
Da(max.)(mm)738
Da(max.)(mm)715
S(min.)(mm)8.5
ra(max.)(mm)6.4
rb(max.)(mm)3.2
Axial load factors : Y2(mm)1.43
Axial load factors : Y3()2.12
Axial load factors : Y0()1.40
Constant e()0.47

Refer.

(Refer.)Mass(kg) 468
JTEKT

2025/06/01