High-speed grinding

High-speed grinding (HSG) is a rail care concept developed by the company Stahlberg Roensch from Seevetal, Germany.

Head checks, squats, corrugation and slip waves all contribute to higher maintenance costs, intensified noise pollution, traffic obstructions, and ultimately a shortened rail lifespan.

The primary challenge for modern rail maintenance is that less time is available to perform it due to higher traffic densities.

The usual grinding speed on Deutsche Bahn's rail network is 80 kilometres per hour (50 mph).

RC01 is used on main line and high speed tracks of DB Netz AG, while the smaller version is deployed mostly on commuter and metro rail networks.