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The ACCUPRO 777852 is a DA180 collet nut designed to secure collets within DA180-series toolholding systems used in CNC machining and precision milling operations. The collet nut threads onto the toolholder body and applies axial clamping force to the collet, locking the cutting tool in place during high-speed cutting passes. Proper collet nut condition is critical to runout performance and tool retention. This replacement nut is sold individually and is appropriate for machine shops, toolroom technicians, and CNC setup personnel maintaining DA180 toolholding assemblies.
The DA180 collet nut is used in DA180-series collet chucks commonly found in vertical and horizontal machining centers, mill-turn centers, and toolroom mills. It is a maintenance and replacement component installed when the existing nut shows thread wear, seating damage, or loss of clamping torque. It ships as a single unit, making it practical for targeted replacement without purchasing a full chuck assembly.
Designed as a replacement collet nut for DA180-series collet chuck toolholders. Confirm thread pitch and seating geometry against your existing DA180 chuck specification before installation.
Installation should be performed by a qualified machinist or toolroom technician familiar with collet chuck systems. Ensure the spindle is fully stopped and the machine is powered down before removing or installing any toolholder components. Use the appropriate DA180 collet nut spanner wrench to achieve proper clamping torque — do not use substitutes that may damage the nut flats or slots. Inspect collet seating surfaces and chuck bore for wear or debris before assembly.
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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