Air Die Grinder Air Die Grinder Learn More AIR DIE GRINDER (ADGⅠ-220) Install end grinds of 10mm or 6mm shank diameter.Maximum speed: 22,000 RPM Air pressure: 0.7-0.8 MPaA 3HP power air compressor for only one air die grinder.5. A screw air compressor for multiple air die grinders at the same time FOR AUTOMATIC EQUIPMENT Remarks: Customized products can be designed and manufactured for automatic grinding equipment as per request from the customer. Application: Manually & automatically grind the curved surface, groove and bore of cast iron.