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The PARLEC CN20 is a collet nut designed for use with DA200 series collet chucks in CNC machining and toolholding applications. The collet nut threads onto the collet chuck body to apply clamping force against the collet, securing cutting tools during milling, drilling, and reaming operations. Proper clamping force and thread engagement are critical to runout performance and tool life, making the collet nut a wear and maintenance item in high-cycle production environments. Machinists and toolroom technicians install and replace collet nuts as part of routine toolholding maintenance.
The CN20 is suited for use in machine shops running DA200 series toolholding systems on CNC machining centers and manual machines. It is a standard replacement component for worn or damaged collet nuts in existing DA200 chuck assemblies. Both production shops and job shops servicing a range of workpiece materials will encounter routine collet nut replacement as cutting cycles accumulate.
Designed as an OEM-style replacement collet nut for DA200 series collet chuck toolholding systems.
Collet nuts should be installed and tightened using the appropriate spanner wrench for the DA200 series - never use pipe wrenches or improvised tools that can damage the nut or chuck body. Ensure the machine spindle is locked and all power is isolated before servicing toolholders. Inspect collet seating surfaces for wear or debris before installing the new nut. Torque to the toolholder manufacturer specification using a calibrated torque wrench.
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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