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The PARLEC ERS20-0393 is an ER20 series collet designed for use in CNC machining centers, milling machines, and toolholding systems that accept ER20-standard collet chucks. This collet accommodates a 10 mm shank diameter tool and has an overall length of 1.24 inches with an overall diameter of 0.827 inches. It is engineered to provide consistent clamping force and concentricity, making it a reliable workholding component for machinists and toolroom technicians working with ER20 collet chuck systems. The rated clamping pressure is 1800 units as specified by the manufacturer.
This collet is suited for light to medium-duty milling, drilling, reaming, and tapping operations where an ER20 collet chuck is already installed. It is commonly used in production shops, tool and die operations, and maintenance machining environments. The 10 mm bore size fits standard 10 mm round shank cutting tools including end mills, drills, and reamers. Installation requires a properly sized ER20 collet chuck and a calibrated torque wrench or spanner nut wrench.
Designed as an OEM-style replacement or direct-fit collet for ER20-standard collet chucks used in CNC and manual machining applications.
Installation is performed by a machinist or toolroom technician. Power down and lock out the spindle before seating or removing collets. Insert the collet into the collet chuck before threading onto the toolholder to prevent damage to the collet locking groove. Use a proper ER spanner wrench and follow the toolholder manufacturer torque guidelines when tightening the nut.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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