Koyo
FOR REFERENCE ONLY
  • Rolling mill roll neck bearings
  • Four-row tapered roller bearings
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Bearing No. LM278849D/810/810D

Specifications
(Boundary dimensions ...etc)

d(mm)585.788
D(mm)771.525
T(mm)479.425
W(mm)479.425
r(min.)(mm)6.4
r1(min.)(mm)3.2
Basic load ratings : Cr(kN)9790
Basic load ratings : C0r(kN)25600
Fatigue load limit : Cu(kN)2120
Axial load factors : Y2(mm)2.03
Axial load factors : Y3()3.02
Axial load factors : Y0()1.98
Constant e()0.33

Mounting dimensions

da(min.)(mm)622
Da(max.)(mm)747
Da(max.)(mm)725
S(min.)(mm)11
ra(max.)(mm)6.4
rb(max.)(mm)3.2
Axial load factors : Y2(mm)2.03
Axial load factors : Y3()3.02
Axial load factors : Y0()1.98
Constant e()0.33

Refer.

(Refer.)Mass(kg) 599
JTEKT

2025/06/01