Friction piston SCHAERER Spare Parts 3370062317

A friction piston is the component that converts the rotary motion of a coffee machine's motor into the linear force that compresses ground coffee. Inside the brew group, the piston moves up and down within a sealed cylinder, creating the pressure needed to extract espresso.

The operator loads the portafilter with fresh coffee, locks it into the brew group, and starts the brew cycle. The motor turns a cam or gear, which drives the piston downward. As the piston presses against the coffee, hot water is forced through at high pressure, producing the espresso. Once the cycle completes, the piston retracts, allowing the used coffee puck to be ejected and the process to begin again.

This friction piston is a direct replacement part for SCHAERER coffee machines, ensuring compatibility and maintaining the original performance of the brew group. Its role is critical in delivering consistent pressure and smooth operation, which directly affects the quality and taste of the espresso.

Fits SCHAERER coffee machines as specified in the manufacturer's parts catalogue.