Lyndex-nikken 163-072 Hex Collet 1-1/8 Inch

Product Description

The LYNDEX-NIKKEN 163-072 is a hex collet designed for CNC machining and toolholding applications requiring precise hex workpiece clamping. With a 1-1/8 inch hex bore size and an overall length of 4.31 inches, this collet provides secure, accurate gripping of hex-profile stock and tooling. The internal thread measures 1-11/16 inch-20 and the external thread is M47.5 x 1.75, allowing direct installation into compatible collet chucks and toolholders. A total indicator runout (TIR) of 0.0011 inches ensures the tight concentricity tolerances demanded in precision turning and milling operations. Weighing 2 pounds, this is a solid, production-grade workholding component installed by machinists and CNC setup technicians.

This hex collet is suited for use in machine shops running CNC lathes, turning centers, or milling machines where hex bar stock or hex-profile workpieces must be gripped with consistent accuracy. It is appropriate for both production and prototype environments where repeatable setup and minimal runout are priorities. The collet seats into chucks or nosepieces with matching thread specifications. Typical applications include secondary operations on hex fasteners, fittings, and precision mechanical components.

Key Features

• 1-1/8 inch hex bore size for secure gripping of hex-profile workpieces
• TIR of 0.0011 inches for high-concentricity toolholding
• Internal thread size 1-11/16 inch-20 for chuck engagement
• External thread M47.5 x 1.75 for toolholder mounting
• 4.31 inch overall length provides stable collet seating depth
• Weighs 2 pounds, indicating robust construction for production use

Compatibility

Designed for use in toolholding systems with matching 1-11/16 inch-20 internal and M47.5 x 1.75 external thread specifications. Verify chuck and collet closer thread compatibility before installation.

Installation Notes

Hex collets should be installed by qualified machinists or CNC toolroom personnel familiar with collet chuck systems. Power down and lock out the machine spindle before seating or removing the collet. Use the correct collet wrench and chuck spanner to achieve proper thread engagement without cross-threading. Inspect collet bore and threads for wear or contamination before each use, as debris will directly affect TIR and part accuracy.