The Simmons Pre-Mount and Mount Press (SMP-200) machine cell combines a pre-mount and mount wheel press for mounting railcar wheels to axles. A transfer cart carries axles and finished wheel sets to the different operation stations of the machine.
The wheel pre-mount system pre-assembles finished wheels and axles before they enter the mounting press for final assembly. The pre-mount system receives individually finished wheels and axles and presses the wheels approximately 25 mm onto the axle wheel seats. Pre-mounting is fully automatic and eliminates pre-assembly of the components in the mounting press.
The 200-ton mounting press performs the final assembly of railway wagon wheel sets. Matched wheel and axle assemblies are indexed into the mounting press from the pre-mount station. The press is complete with special tooling and an automatic gauging system. The gauge system is designed to automatically position the wheels on the axle centerline and at proper track gauge. The gauge system produces wheel sets that are consistent and eliminates errors made by the machine operator. The press is fully automatic and includes a Wheel Press Recorder, which produces a pressure diagram, reflecting tonnage over distance. The tonnage recorder also stores the pertinent wheel and axle data such as wheel and axle serial numbers, mount number, and misfits, allowing the stored data to be and transferred to a central computer.
|Press Length||299 in.||7595 mm|
|Press Width||190 in.||4814 mm|
|Press Height||139 in.||3526 mm|
|Total Weight||24000 lbs.||10887 kg|
|Press Ram Stroke||36 in.||914 mm|
|Cycle Time||3 minutes|
|Wheel Centering Accuracy||+/- 0.020 in.||+/- 0.51 mm|
|Back-To-Back Repeatability||+/- 0.015 in.||+/- 0.38 mm|
|Maximum Pressing Force - Mount Press||200 short tons||181 metric tons|
|Ram Extend Speed||250 in/min||6350 mm/min|
|Ram Retract Speed||300 in/min||7620 mm/min|
|Maximum Pressing Speed - Pre-Mount Press||60 in/min||1524 mm/min|
|Maximum Pressing Speed - Mount Press||13 in/min||330 mm/min|
|Electrical Power||45 kW|
|Hydraulic Reservoir||200 US gallons||757 liters|
Wheel Set Dimensions
|Maximum Wheel Diameter||52 in.||1320 mm|
|Minimum Wheel Diameter||28 in.||711 mm|
|Maximum Axle Length||102 in.||2590 mm|