A spacer is a mechanical part typically used to isolate or fix two components, preventing them from direct contact or friction. Spacers are widely used in industrial equipment, especially in transmission systems such as bearings, bushings, and gears, serving positioning, buffering, and protection functions. Spacers are made of various materials, including metals (such as stainless steel, copper, and aluminum) and non-metals (such as nylon, plastic, and rubber). Different materials are suitable for different working environments and requirements. For example, metal spacers are resistant to high temperatures and high pressures, making them suitable for heavy-duty machinery; while non-metallic spacers have properties such as insulation, anti-static properties, and corrosion resistance, making them suitable for chemical or electronic equipment. The design and dimensions of spacers need to be customized according to specific application scenarios. Common shapes include circular, rectangular, and annular. When installing spacers, attention must be paid to the tolerance matching between them and mating parts to avoid excessive tightness or looseness affecting performance. In addition, spacer maintenance is also important; regular inspection of wear and timely replacement can extend equipment life.
