Cylinder

Engineered around the operating needs of surface and underground drilling equipment, the Cylinder (OEM 551 931 55) is an aftermarket component for the feed and drill-carriage mechanism. Its role is to create dependable linear motion from hydraulic pressure while maintaining alignment through repeated extension and retraction cycles.

Controlled bore, rod and sealing interfaces help maintain smooth stroke behavior, pressure retention and resistance to side-load wear through repeated cycles. Typical listed applications include DD311 and DD321-40, subject to machine specification and configuration verification. The part supports cost-conscious maintenance strategies that require a reliable cross-reference option for professional drilling equipment.

Supported by Delkom’s experience in alternative rock-drill and drill-rig spare parts, this component is supplied for professional mining and tunneling maintenance worldwide. For availability, pricing and an application check, quote Delkom reference 110 800 483 and OEM reference 551 931 55.