The Spacer (OEM Part No. 3128314105) is a spare part compatible with Simba S7D underground drilling rigs. Manufactured from durable alloy steel, it acts as a mechanical component for assembly gap adjustment at the component spacing position. It accurately sets the clearance between matching mechanical parts to avoid abnormal vibration and friction caused by mismatched gaps, ensuring smooth coordination of all connected assemblies. With consistent thickness and precise OEM dimensions, it supports standardized assembly and stable long-term running of S7D drilling rigs.