Mainline rail grindingSpeno RR24 Rail Grinder
The Speno RR24 is a 24-stone rail reprofiling train used for preventive and corrective grinding on conventional, heavy-haul and other railway networks. Individual RR24 variants and delivered configurations differ, so fleet-specific documentation remains the controlling reference.
What is the Speno RR24?
RR24 denotes a Speno rail-grinding platform equipped with 24 grinding wheels. Speno lists RR24 M, MB and MC variants in its fleet. The machines undertake preventive or corrective reprofiling and can be configured for the requirements of individual rail networks.
This entry separates verified platform facts from values that belong to a particular RR24 vehicle. Confirm the complete variant designation and fleet documentation before specifying consumables.
Speno RR24 gallery
All ten images from the original entry are retained.
RR24 key specifications
Only the 24-wheel configuration is treated as a platform-level fact. The remaining values describe published or documented RR24 examples and must be verified for the individual machine.
How the RR24 grinding system works
Survey
Rail condition and target profiles define preventive or corrective treatment.
Plan
The grinding programme assigns wheel angles, pressure and passes.
Reprofile
Twenty-four abrasive units remove controlled material across both rail heads.
Verify
Post-work measurements check the achieved longitudinal and transverse profile.
Typical RR24 applications
Preventive and corrective treatment of open track.
Profile management under demanding traffic conditions.
Treatment programmes for corrugation and rolling-contact damage.
Delivered variants may address tunnels, switches or environmental requirements.
Speno RR24 video
The original RR24 video is retained as an operating reference.
250 × 78 × 150 mm rail grinding wheel
This resin-bonded zirconia-alumina wheel is listed for selected Speno RR24 configurations. Confirm the installed grinding unit, complete dimensions, speed rating and approved drawing before ordering.
- Dimensions
- 250 × 78 × 150 mm
- Abrasive
- Zirconia alumina
- Bond
- Resin bond
- Maximum speed
- 50 m/s
Information required before ordering
Speno RR24 FAQ
What is the Speno RR24?
It is a Speno rail reprofiling train equipped with 24 grinding wheels.
Are all RR24 machines identical?
No. RR24 M, MB and MC suffixes identify different variants and equipment arrangements.
What wheel is referenced for the RR24?
This page references a 250 × 78 × 150 mm resin-bonded zirconia-alumina wheel for selected configurations.
Does the model name confirm wheel compatibility?
No. Check the installed unit, existing wheel marking, mounting, RPM and approved drawing.
References
- Speno International machine range — manufacturer model and application overview.
- KiwiRail RR24M-30A fact sheet — fleet-specific reference values.
- Speno RR24 video — original page video.
- 250 × 78 × 150 mm product page — product details and enquiry information.