RE12820 is a damper pulley replacement for JD agricultural farm machinery equipment aftermarket spare parts and it is categorized as an engine accessory.

Compatible Models: Suitable for JDe 7500 and other compatible models.

Function: Mounted at the front end of the engine crankshaft, this pulley incorporates an internal shock absorber typically made of rubber or similar damping material. It absorbs torsional vibrations generated during crankshaft operation, reduces impact vibrations caused by engine operation, thereby lowering noise levels, mitigating vibration impacts on the engine and other components, enhancing engine smoothness and reliability, and extending the service life of related parts.

Structural Features: Common designs include silicone oil-type damping pulleys and rubber-type damping pulleys. Rubber-type pulleys feature simpler construction, lower manufacturing complexity, and broader applicability. Typically, a standard all-iron pulley is modified by cutting its center into inner and outer sections. Rubber is then filled into the gap between these sections. Engine power is transmitted through the inner ring, the intermediate damping rubber layer, and finally to the outer ring, achieving vibration reduction.