Description

Engineered around the operating needs of surface and underground drilling equipment, the Piston (OEM 551 529 74) is an aftermarket component for the percussion and drifter assembly. The component supports the percussion or tool-retention sequence, helping transfer drilling forces while keeping the working assembly correctly aligned.

Accurate fit and robust working surfaces help maintain energy transfer and alignment through the high-frequency load cycles produced during drilling. Cross-reference data lists applications including DD311 and DD311-40; final fit should be confirmed against the machine configuration or serial information. The alternative sourcing option is suited to maintenance programs focused on equipment availability, predictable servicing and competitive lifecycle cost.

Delkom combines rock-drilling spare-parts expertise with broad export capability for mining and tunneling customers. For purchasing support, bulk requirements or fitment confirmation, use Delkom reference 110 400 212 and OEM reference 551 529 74.