The Bushing (OEM Part No. 3128309385) is a spare part compatible with F9-11, S7D, ROC-D7-11, ROC-D9-11, and S7D-1 underground drilling rigs. Manufactured from bronze alloy, it is designed as a bearing component for the pivot and sliding support system at the bushing assembly position. The bushing reduces friction between moving parts, provides stable guidance and support, and helps protect connected components from excessive wear during drilling operations. Its durable bronze construction offers excellent wear resistance, reliable performance, and extended service life in demanding mining and tunneling environments.