SMP-200 Wheel Pre-Mount and Mount Press

The Simmons Pre-Mount and Mount Press (SMP-200) is a fully automatic production wheel press for mounting railcar wheels to axles. The SMP-200 takes pre-machined wheels and axles and accurately positions and mounts the wheel set in a fast, efficient, and AAR-compliant manner.

The machine cell combines wheel bore and axle lubrication stations, pre-mount press, and mount press. Wheels are loaded into wheel carts that transport them to the wheel bore lubrication station. Once lubricated, the cart loads the wheels into the pre-mount press. Axles are loaded directly into the axle lubrication station, or held in an optional axle rack. After lubrication, the axle is transferred to the wheel set cart that holds the axle during the pre-mounting and mounting operations. The pre-mount system pre-assembles the wheel set, pressing the wheels onto the axle with 19 tons of force. Pre-mounting is fully automatic and eliminates pre-assembly of the components in the mounting press, saving production time. After the wheels are pre-mounted to the axle, the wheel set cart transfers the wheel set to the intermediate elevator, which transfers the pre-mounted wheel set from the first position on the wheel set cart to the second position. The pre-mounted wheel set is then transferred into the mounting press.

Wheel Press: SMP-200 Production Wheel Mount Press

The 200-ton mounting press performs the final assembly of the railway wheel set. Matched wheel and axle assemblies are indexed into the mounting press from the pre-mount station. The press includes special tooling and an automatic gauging system. The gauge system automatically positions the wheels on the axle centerline and at proper track gauge, produces wheel sets that are consistent and free of operator error. The automatic press 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.

Machine Specifications

Download our SMP-200 Wheel Pre-Mount and Mount Press product data sheet — for the full machine specification, please contact the Machine Sales team.

Overall Machine Length (not including wheel carts)

175.5 in | 4455 mm

Overall Width

267.5 in | 6797 mm

Maximum Height

113 in | 2871 mm

Total Machine Weight

47700 lbs | 21637 kg

Takt Time

 2 minutes 10 seconds

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

Maximum Pressing Force - Pre-Mount Press

19 short tons | 17.2 metric tons

Press Ram Stroke - Mount Press

36 in | 914 mm

Ram Extend Speed

250 in/min | 6350 mm/min

Maximum Pressing Speed - Mount Press

11.3 in/min | 287 mm/min

Electrical Power

60 kW

Hydraulic Reservoir

200 US gallons | 757 liters

Maximum Wheel Diameter

44 in | 1120 mm

Minimum Wheel Diameter

28 in | 711 mm

Maximum Axle Length

102 in | 2590 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.

We offer:

OEM Spare & Replacement Parts
New or Upgrade Services
Service & Inspections
Training

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