Description

Created for continuous-duty rock drilling applications, the Insulating Tube (OEM 550 528 25) offers a service-focused replacement choice for the rock drilling machine assembly. Its role is to maintain a reliable connection in the fluid or air path, helping preserve flow while reducing the risk of leakage at the interface.

Accurate threads, mating faces and sealing points support dependable flow transfer while resisting loosening, leakage and misalignment under machine vibration. Cross-reference data lists applications including DD320-40 and DD321-40; final fit should be confirmed against the machine configuration or serial information. The part supports cost-conscious maintenance strategies that require a reliable cross-reference option for professional drilling equipment.

This component forms part of Delkom’s alternative spare-parts program for professional drilling machinery. For current stock, commercial terms and technical cross-checking, quote Delkom part number 110 300 139 with OEM reference 550 528 25.