Erowa ER-007580 80mm Pneumatic Rapid action EDM Chuck. RHS 80mm EDM Pneumatic Chuck corresponds to ER-007580. It is equivalent to Rapid-action Chuck Automatic ER-007521 or Manual rapid-action chuck ER-007580. It applies to retrofit on EDM sinking machines, working with electrode holders. It is made of 440C stainless steel, well rust-resistant. Air pressure required 6 bar with self-cleaning function. Clamping force up to 60000N.