ER-40 100mm Metal Collet Chuck Upgrade — 40CR Replacement Part for Rawiri Lathe & Milling

Replacement ER-40 collet chuck for Rawiri, featuring a 100mm diameter and manufactured from durable 40CR steel to resist wear during extended use. The integrated collet holder secures tooling with excellent stability, providing safe and reliable clamping during operation. Precision-engineered with 16° concentricity to deliver high accuracy and improved work efficiency. Compact, lightweight construction makes installation straightforward and convenient. Broad compatibility lets you mount the chuck to your preferred backplate for use on both lathes and milling machines.