Rolling Stock

Maintenance includes all ordinary, preventive, predictive, scheduled, and nonscheduled measures taken to enhance the reliability and safety of an equipment by preventing damages and performance degradation.
Maintenance can be divided into two categories: “Post-maintenance” is taken place after a damage is occurred, while “preventive maintenance” is performed prior to damage. Preventive maintenance can again be divided into daily maintenance, conditional maintenance, and predictive maintenance

A complete maintenance activity to maintain the optimized performance of a rolling stock

Automatic Wheel Measuring System
	Automatic wheel measurement system passing speed :3-12km/h measuring range wheel dia. : 600~1300mm flange height : 26~36mm flange thickness : 18~36mm cracks : horizontal > 10mm, grooved surface < 5mm
	Automatic wheel measurement system passing speed :5km/h washing method mechanical cleaning with rotational brushes washing process :removal of dirt → pre-warming → sparying detergent and brushing → rinsing → drying
	Wheel Pit Lathe Shed re-profiling speed :4~13mm/min cutting feed rate 0.1~2.5mm/rev. axle load :appox. 1hour for 2 wheel sets(4wheel)
	Simultaneous Lifting Device effective lifting height :3200mm lifting speed 336mm/min load power car : 35tons trailer : 20tons upper limit : 4150mm lower limit : 950mm
	Dropping table total stroke :3200mm lowering speed approx. 2m/min operatiog pressure : 224.4kg/cm²