A railgrinder (also spelled rail grinder) is a maintenance of way railway car that is used to remove irregularities from rail tracks and restore their profile, in order to extend the life of the rails before they need to be replaced.

Many forms are known, from the simple angle grinder through to the multi stone grinders used by Serco and Loram. Modern rail-grinding equipment may be mounted on several connected vehicles (forming a rail grinding train) with 48 or more grind wheels set at controlled angles which in combination restore the track to its correct profile.

Maintenance of way equipment

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