The mining and tunnelling industry places high demands on hydraulic systems due to the abrasive and corrosive nature of the operating environment. Kerpener HT Hydraulik Technik Gülich-Pohl GmbH has developed a new type of coating for its hydraulic cylinders that is suitable for a wide range of applications. These coatings have a much higher resistance to abrasion and corrosion than other products currently available on the market. Hydraulic components treated with the new HT coating therefore have a significantly longer service life than is typical for units of this type. This in turn will greatly reduce the amount of time lost on machine repairs and equipment stoppages.