Bearing Bushing

Created for continuous-duty rock drilling applications, the Bearing Bushing (OEM 550 420 66) offers a service-focused replacement choice for the boom positioning and support assembly. It supports loaded or moving interfaces by controlling clearance, guiding motion and reducing direct wear between adjacent components.

Application data associates this reference with DX680 and DX700; configuration and serial-number checks are recommended before purchase. Accurate fit helps distribute load across the bearing area and maintain the intended clearance as the connected mechanism cycles under load. The part supports cost-conscious maintenance strategies that require a reliable cross-reference option for professional drilling equipment.

Offered within Delkom’s aftermarket range for surface and underground drilling machinery, this part supports planned maintenance and international spare-parts supply. To confirm availability and fitment, reference Delkom 110 400 175 and OEM 550 420 66 when contacting the Delkom team.