A case of failure analysis about the disengaged from a train wheel-axle, in the figure 1 the wheel moved from left to right. Figure 2 is other case of disengaged from a train wheel-axle, theses disengaged occurred when the train was running. Why does a wheel begin to disengage from the axle of a train? What are the probable causes?
It appears to be from a freight car based on the axle geometry. Multiple folks have commented on axle / wheel fits here, and that the AAR has new/ rebuild dimensional requirements. Additionally I would make some basic determination as to whether the axle bearings ( both sides) here was also free to operate properly. Bearing failures on axle assemblys are the most common failure modes here. With freight cars the they can often sit for months or even years seeing little operational miles or the inverse seeing lots of miles prior to proper maintenance.
ASM World Headquarters9639 Kinsman RoadMaterials Park, OH44073-0002
Contact UsAbout UsLegal