The Plain Bearing (OEM Part No. 3128310218) is a spare part compatible with Simba M4C, Simba H1354, SIMBA H1254 underground drilling rigs. Manufactured from bronze alloy, it is designed as a bearing component for the mechanical sliding system bearing position. The plain bearing reduces friction between moving parts, supports smooth sliding operation, and helps maintain accurate mechanical alignment. Its wear-resistant construction provides reliable performance under heavy-duty underground mining conditions. This OEM replacement bearing ensures stable movement, improved component life, and efficient operation of drilling equipment.