ER32 Collets- ER32 Standard Collets Our ER32 collets have a capacity ranging from . 0937 - . 7500 inches or in metric sizes from 3mm up to 20mm. The number shown on the collet is the largest size that particular collet can hold, but it can be tightened to a smaller size.

Standards of ER Collets As you tighten the nut on your holder, the ER collet collapses together to hold round tools or stock from 0.5-2 mm (or 0.0197-0.0787 in., depending on collet size) smaller than the collet internal diameter.

Full range of high precision 5 micron accuracy dead-size ER32 collets for cnc machines. All collets are fully hardened and precision ground. They ensure you can achieve the best results from your machine.

Collet chucks are best suited for parts ranging in size from 1/16″ to 4″ in diameter because they offer much better tool clearance, can be run at higher speeds than jaw chucks, and provide superior grip force.