Stanray M2/M3 Underfloor Wheel Truing Machine
The Stanray® M2/M3 is an underfloor railway wheel truing machine for reprofiling wheel treads on passenger and light rail vehicles. Utilizing proven Stanray wheel profile milling technology, the M2/M3 performs fully automatic measuring and cutting cycles while managing extreme wheel wear conditions. The machine’s centerless operation allows for quick and easy setup which does not require removal of bogie components or access to axle centers.
The Stanray M2 is designed for light rail vehicles with an axle load up to 40,000 pounds (180 kN). The M3 accommodates heavy rail applications, with an axle load up to 100,000 pounds (445 kN).
The Stanray M2/M3 includes integrated automatic measuring systems that monitor the wheel location and measure diameter, width, and profile as well as wheel set back-to-back, back face runout, and radial runout on the tread. Final diameters, profile conformity, and other desired parameters are verified and sent to the customer’s data management system or stored locally. The connectivity of the machine also allows for optional remote diagnostics, which will keep your revenue vehicles safe and on track.
Cycle time study available upon request
+/- 0.008 in. | +/- 0.2 mm
+/- 0.006 in. | +/- 0.15 mm
Roundness (Radial T.I.R.)
+/- 0.004 in. | +/- 0.1 mm
Surface Finish (as Machined)
< 200 μ” Ra | < 5 μm Ra
Maximum Compressed Air
80-100 psi @ 15 SCFM | 5.5-6.9 bar @ 425 lpm
Maximum Axle Load
M2: 40000 lbs. | 180 kN
M3: 100000 lbs. | 445 kN
Maximum Wheel Diameter (at Tapeline)
44 in. | 1118 mm
Minimum Wheel Diameter (at Tapeline)
17 in. | 432 mm
Maximum Wheel Width
5.85 in. | 148 mm
Minimum Bogie Clearance (Lowest Point Above Rail)
2 in. | 50 mm
We're here to help
The NSH USA 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.