The Liner (OEM Part No. 3128231241) is a wear part designed as a compatible replacement for underground bolting and drilling equipment. Manufactured from wear-resistant alloy steel, it is engineered for installation at the feed beam or cradle contact position within the drill steel support system. The liner provides surface protection against friction, impact, and continuous rod movement, helping maintain structural alignment and operational stability. It is suitable for equipment such as Boltec MC, Boomer MD, and 235 bolting rigs, ensuring reliable performance in demanding underground mining and tunneling applications.