Lyndex-nikken 300-063 Round Collet 63/64 Inch

Product Description

The LYNDEX-NIKKEN 300-063 is a round collet designed for precision workholding in machining operations. It features a 63/64-inch bore size and a 1.988-20 external thread, making it compatible with standard collet chuck systems that accept this thread specification. The overall length is 3.75 inches, and the collet holds a total indicated runout (TIR) of 0.0011 inches, supporting tight-tolerance turning, milling, and grinding applications. Machinists and toolroom technicians install this collet in production and job-shop environments where repeatable part concentricity is required.

This collet is suited for use in CNC and manual machine tool setups where a 63/64-inch round workpiece or toolholder shank must be gripped securely. The 1.988-20 external thread seats into compatible collet chuck bodies, making it appropriate for high-volume production runs as well as precision prototype work. It is installed by machinists on milling machines, lathes, and grinding machines in both light-duty and heavy-duty shop environments.

Key Features

• 63/64-inch bore size for accurate workpiece or tool gripping
• 1.988-20 external thread for secure chuck body engagement
• 3.75-inch overall length for standard collet chuck fitment
• 0.0011-inch TIR supports close-tolerance machining applications
• Round collet profile for cylindrical workpiece and toolholder gripping

Compatibility

Designed as an OEM-style replacement or direct-fit collet for collet chuck systems accepting a 1.988-20 external thread and a 63/64-inch bore size. Confirm thread specification and bore size against your chuck body before installation.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before removing or installing any collet. Inspect the collet bore and chuck body threads for wear, chips, or contamination before seating the collet. Do not exceed the chuck manufacturer's specified clamping torque or RPM ratings for this collet size.