In order to ensure better machining quality and extend the life of the tool and the ATC spindle, it is necessary to minimize the vibration. Therefore, the ER collet holds the cutter bits into the spindle to maintain the stability.
However, prolonged use can cause the collet to wear out, so we need to periodically clean and maintain the collet.
Regularly use a cleaning tool to remove debris from the collet: you can choose a rag that damps the cleaner, or a nylon brush. When cleaning, check the clamp for damaged parts. If necessary, try using a tool such as a bronze cleaning brush to remove burrs or scratches on the collet. Do a good job of protecting the life of the ER collet.
However, the wear of the collet is inevitable. If your ER collet starts to loosen or is difficult to adjust, it may be that it is deformed and you may need to re-purchase a new one from ATC-Spindle.com:
ER32 Spring Collet Set From 3mm To 20mm 0.01MM ER Collet Chuck Precision for CNC Spindle Motor