Grinding Trains Library
A searchable encyclopedia of rail grinding trains, high-speed grinding systems, transit grinders and rail milling machines used across mainline, heavy-haul, metro and tram networks.
Loram RG400 · Production rail grindingWhat are grinding trains?
A rail grinding train is a specialised maintenance vehicle—or a multi-vehicle consist—used to restore the rail profile and remove surface defects.
Controlled material removal helps manage corrugation, rolling contact fatigue and profile deviation. Fleets range from compact road-rail machines and turnout grinders to production trains with more than 100 grinding motors.
Global grinding train manufacturers
The market includes specialist grinding contractors, railway equipment manufacturers and rail-processing technology companies.
| Manufacturer | Country | Primary technology | Models in this library |
|---|---|---|---|
| Loram | USA | Conventional grinding | RG400 · C44 · RGC · RGI · RGS · RGX · MRG1 |
| Harsco Rail | USA | Conventional grinding | PGM96 · RGH20C · RGH10C · Möser |
| Speno | Switzerland | Conventional grinding | RR 24 M · RR 48 M · RR 96 M · SRR16M-1 |
| Vossloh | Germany | High-speed grinding | HSG-2 · HSG-city |
| Plasser & Theurer | Austria | Oscillating and sliding grinding | ATMO |
| CRRC | China | Conventional grinding | GMC-96 · PGM-48 |
| GEMAC | China | Conventional grinding | CMC20 |
| AUTECH | Switzerland | Conventional grinding | AT VM 8000 · AT2200 |
| Schweerbau | Germany | Conventional grinding | GWM 550 |
| Linsinger | Austria | Rail milling | MG31 · MG11 |
| Other / Unverified | Not publicly verified | Conventional grinding | GMC12-III |
Browse rail grinding machines
Loram
US railway maintenance specialist with production, specialty and transit grinding platforms for freight, passenger and urban networks.
RG400
Heavy haul · Freight · Mainline
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C44
Mainline · High-speed rail
View detailsRGC
Passenger rail · Metro · Mainline
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RGI
Mainline · Passenger rail
View detailsRGS
Turnouts · Crossings · Mainline
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RGX
Metro · Urban transit
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MRG1
Metro · Urban transit
View detailsHarsco Rail
Railway equipment supplier whose grinding portfolio spans high-output production trains and compact machines for transit systems and complex trackwork.
Speno
Swiss rail maintenance company known for grinding trains in multiple capacities for mainline, high-speed, metro and tunnel applications.
Vossloh
German rail infrastructure group behind the HSG high-speed grinding systems used for preventive treatment on mainline and urban networks.
Plasser & Theurer
Austrian track-maintenance equipment manufacturer represented here by ATMO, its urban oscillating and sliding grinding solution.
CRRC
Chinese rolling-stock and railway-equipment group with large and medium-capacity grinding trains for mainline and passenger networks.
GEMAC
Chinese rail maintenance equipment supplier associated with compact grinding vehicles for metro, turnout and conventional railway work.
AUTECH
Swiss manufacturer of flexible road-rail grinding equipment designed primarily for tram, metro and other urban rail systems.
Schweerbau
German rail treatment and maintenance specialist operating rail-bound equipment for profile restoration and mainline maintenance.
Linsinger
Austrian rail-processing specialist focused on milling technology for deeper defect removal, followed by controlled surface finishing.
Other / Unverified
Entries retained from the existing library while the original manufacturer and full technical documentation are still being verified.
Rail treatment technologies
Conventional grinding
Powered abrasive stones are set at controlled angles to remove surface defects and restore the target transverse profile.
High-speed grinding
Passively driven stones remove a very small layer at high working speed, supporting frequent preventive maintenance.
Oscillating grinding
Longitudinal stone movement increases treatment effectiveness in corrugation-prone urban locations.
Rail milling
Rotating cutters remove deeper material before finishing. Milling trains are listed for comparison, not as conventional grinders.
Common rail grinding wheel references
Dimensions are reference information, not universal compatibility guarantees. Always verify the exact machine generation, grinding unit, mounting interface, maximum RPM and operator-approved drawing.
| Common dimension | Referenced machine families | Library index |
|---|---|---|
| 260 × 90 × 154 mm | Selected Loram production grinders and other configured fleets | Browse models |
| 260 × 90 × 152.4 mm | Selected CRRC GMC configurations | Browse models |
| 250 × 78 × 150 mm | Selected Speno RR16 / RR24 configurations | Browse models |
| 152 × 80 × M20 | Selected Harsco RGHC and GEMAC configurations | Browse models |
| 120 × 73 × 40 mm | Selected Vossloh HSG systems | Browse models |
| 120 × 110 × M20L | Selected AUTECH references | Browse models |
How to select the correct rail grinding wheel
Machine model alone is not enough to confirm compatibility. Check the complete wheel and operating specification before procurement or installation.
- 01Identify the machineRecord the manufacturer, exact model, generation and grinding-unit type.
- 02Measure the wheelConfirm outside diameter, thickness, bore or thread and mounting form.
- 03Check operating limitsVerify the approved maximum RPM and the intended grinding application.
- 04Confirm before orderingMatch the specification to the machine manual, drawing or approved sample.
Frequently asked questions
Quick answers about machine classification and grinding-wheel compatibility.
What is a rail grinding train?+
A rail grinding train is a specialised maintenance vehicle or consist that uses controlled abrasive action to remove rail surface defects and restore the required rail profile.
Which manufacturers produce rail grinding machines?+
Manufacturers and specialist suppliers represented in this library include Loram, Harsco Rail, Speno, Vossloh, Plasser & Theurer, CRRC, GEMAC, AUTECH and Schweerbau. Linsinger rail milling systems are listed separately for comparison.
How do I identify the correct grinding wheel for a machine?+
Confirm the machine manufacturer, exact model and generation, wheel dimensions, mounting interface, approved maximum RPM and intended grinding application before selecting a wheel.
Are grinding wheel dimensions interchangeable between models?+
No. A similar outside diameter does not confirm compatibility. The bore or thread, mounting design, thickness, speed rating and machine-specific approval must also match.
What information is required to confirm compatibility?+
Provide the manufacturer, model, wheel marking or drawing, dimensions, mounting form, maximum operating speed, required quantity and, where possible, photographs of the existing wheel and machine interface.