DDP-600 Wheel Demount Press
The Simmons Dual End Demount Press (DDP-600) disassembles wheels from wheel sets. The machine consists of a hydraulic cylinder beam assembly at each end of the press, which can be anchored to concrete pedestals or fabricated risers on the shop floor.
The press cylinders are equipped with centers and are extended such that the wheel set is supported by its centers throughout the demounting process. Both rams have embedded distance transducers to provide ram and axle position information to the operator at all times. One ram extends until the first wheel contacts the center abutment. As the ram continues to extend, the wheel is pressed off the wheel seat. The demount process is then repeated by extending the opposite cylinder until the second wheel is pressed off.
The press is capable of demounting a wheel set in 90 seconds. The load/unload time varies depending on the optional handling equipment selected. A typical transfer crane system will add approximately 210 seconds to the cycle time for the combined loading and unloading processes. The press can be recessed into the floor to optimize the working height of the press or facilitate material movement. It can also be used entirely above floor to minimize the installation costs.
Machine Specifications
Download our DDP-600 Wheel Demount Press product data sheet — for the full machine specification, please contact the Machine Sales team.
Press Length
411 in | 10.44 m
Press Width
275 in | 6.99 m
Press Height (without pit)
90 in | 2290 mm
Total Weight (Including HPU)
40000 lbs | 18200 kg
Distance Between Tie Bars
54 in | 1371 mm
Ram Stroke
31.5 in | 800 mm
Cycle Time (Demounting Only)
90 seconds
Maximum Pressing Force
600 short tons | 5330 kN
Ram Extend Speed
120 in/min | 50 mm/s
Ram Retract Speed
140 in/min | 60 mm/s
Maximum Pressing Speed
11 in/min | 4.5 mm/s
Electrical Power
45 kW
Maximum Wheel Diameter
48 in | 1219 mm
Minimum Wheel Diameter
28 in | 711 mm
Maximum Axle Length
102 in | 2590 mm
Maximum Axle Diameter
10.5 in | 265 mm
We're here to help
The Simmons Customer Service Center (CSC) is here to support you and your machine. As the original equipment manufacturer (OEM), we are ideally suited to keep your machine productive and operating safely.
