The Spacer (OEM Part No. 3128314102) is a spare part compatible with Simba S7D underground drilling rigs. Manufactured from durable alloy steel, it is a mechanical component for assembly gap adjustment at the component spacing position. It precisely controls the clearance between matched mechanical parts during rig assembly, eliminates abnormal friction and shaking caused by improper gaps, and ensures smooth coordination of all connected assemblies. With uniform alloy steel thickness and strict dimensional accuracy, it realizes standardized assembly and stable long-term operation of S7D drilling equipment.