The Pulley wheel (OEM Part No. 3128314104) is a spare part compatible with Simba S7D underground drilling rigs. Manufactured from durable alloy steel, it is designed as a wear part for the cable tension transmission system at the rope pulley position. It guides and bears the traction wire rope during boom extension and retraction, enduring continuous friction and tensile loads underground. Its high-hardness alloy steel surface improves abrasion resistance, maintains stable rope operation, and reduces frequent replacement frequency for mining equipment.