Question: =+86. The derailment of a freight train due to the catastrophic failure of a traction motor armature bearing provided the impetus for a study reported

=+86. The derailment of a freight train due to the catastrophic failure of a traction motor armature bearing provided the impetus for a study reported in the article “Locomotive Traction Motor Armature Bearing Life Study” (Lubrication Engr., Aug. 1997: 12–19). A sample of 17 high-mileage traction motors was selected and the amount of cone penetration (mm@10)

was determined both for the pinion bearing and

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