Rail-bound grinding machineL&S RGM 1-12 Rail Grinding Machine
The L&S RGM 1-12 is a self-propelled, rail-bound grinding machine with 12 independently adjustable electric grinding modules. It is designed for rail-head reprofiling, corrugation and short-wave removal, long track sections, tunnels and automatic turnout grinding at 0.5–12.0 km/h.
Last reviewed: September 17, 2026 · Technical data checked against the L&S RGM 1-12 data sheet and current manufacturer series page.
What is the L&S RGM 1-12?
The L&S RGM 1-12 is a Category 4 rail-bound grinding machine in the manufacturer’s RGM series. Twelve independently controlled grinding modules use frequency-controlled electric motors. The operator selects and monitors the computer-controlled grinding process from the cab through a touch interface.
Published applications include removing mill scale and rolling skin, treating corrugation and short waves, restoring transverse and longitudinal rail profiles, and grinding turnouts. The machine can grind in either direction and stores up to 100 grinding programs.
The supplied technical sheet records R40 m as the minimum travelling radius and R50 m as the minimum grinding radius. The current L&S series page gives 60 m for RGM 1-12 without separating travel and grinding conditions. Confirm the delivered configuration with the machine documentation.
RGM 1-12 vs. RGM 1-10 and RGM 2-16
The RGM 1-12 sits between the 10-module RGM 1-10 and the two-unit, 16-module RGM 2-16. All three share a published grinding-speed range of 0.5–12.0 km/h, but module count and minimum curve radius differ.
These are published series values, not a productivity ranking. Delivered machines can differ through signalling, measurement, water, fire-protection and customer-specific equipment.
RGM 1-12 key specifications
Values below come from the supplied English RGM 1-12 data sheet. Customer-specific signalling, measurement, water and safety equipment can change the final machine configuration.
How the RGM 1-12 grinding system works
Select the program
The operator chooses a stored grinding program and supervises the process through the cab touch interface.
Set each grinding angle
Each spindle has independent electromechanical angle control across the published -25° field-side to +70° gauge-side range.
Control speed and feed
Frequency-controlled electric motors vary cup-stone speed, while feed and horizontal stone position are electromechanically controlled.
Measure and contain
Adjustable spark shields and high-capacity extraction manage debris. Optional systems measure transverse profile, longitudinal profile and roughness to EN 13231.
Typical RGM 1-12 applications
Long track sections
Corrective and preventive reprofiling on open or enclosed routes, including tunnels.
Turnout grinding
Automatic processing of switches and crossings according to configured programs.
Corrugation treatment
Removal of corrugation, grooves and short-wave defects from the rail head.
Special track areas
Treatment of level crossings, grooved rail and Vignole rail where the delivered machine configuration permits.
152 × 80 × M20 rail grinding wheel
For this website’s RGM 1-12 consumable reference, the grinding wheel specification follows the same 152 × 80 × M20 configuration used on the Harsco RGH20C page. The L&S data sheet does not state the wheel dimensions or thread, so the installed head and current wheel marking must be checked before ordering.
- Dimensions
- 152 × 80 mm
- Mounting
- M20 internal thread
- Bond
- Resin bond
- Maximum speed
- 50 m/s
Information required before ordering
L&S RGM 1-12 FAQ
How many grinding modules does the RGM 1-12 have?
It has 12 independently adjustable grinding modules driven by frequency-controlled electric motors.
What is the grinding speed of the RGM 1-12?
The supplied data sheet and current manufacturer page publish a grinding-speed range of 0.5 to 12.0 km/h.
Can the RGM 1-12 grind turnouts?
Yes. L&S lists automatic turnout processing among the RGM 1-12 capabilities, subject to machine configuration and the selected grinding program.
What defects can the machine treat?
Published uses include removing rolling skin, corrugation and short waves, plus restoring transverse and longitudinal rail profiles.
Which grinding wheel fits the RGM 1-12?
This page uses 152 × 80 × M20 as its consumable reference, matching the site’s RGH20C wheel module. Because the supplied L&S sheet does not specify wheel dimensions or thread, confirm the physical wheel marking and mounting before purchase.
What information is needed for a wheel quotation?
Send the machine model, build information, wheel marking, dimensions, thread, maximum RPM, rail application, quantity, destination country and required delivery date.
What does RGM mean in the L&S model name?
RGM means Rail Grinding Machine. L&S uses the name for its rail-bound Category 4 grinding-machine series under EN 14033-1.
How does the RGM 1-12 differ from the RGM 1-10?
The RGM 1-12 has 12 grinding modules, while the RGM 1-10 has 10. Both have a manufacturer-published grinding-speed range of 0.5–12.0 km/h and a 60 m minimum curve-radius value on the current series page.
References
Primary technical sources: L&S RGM 1-12 English data sheet and the current L&S RGM series page. The data sheet supplies detailed vehicle values; the series page confirms the current model family, EN 14033-1 category, applications and comparison values. Machine configurations and optional systems can vary by customer and delivery.