Lyndex-nikken 160-042 Round Collet 21/32 Inch 4.31 Oal

Product Description

The LYNDEX-NIKKEN 160-042 is a round collet designed for precision toolholding in CNC machining and milling operations. It accepts a 21/32-inch bore size and features a 1-11/16-20 internal thread along with an M47.5 x 1.75 external thread for secure mounting in compatible collet chucks and toolholding systems. The overall length is 4.31 inches, and the total indicator runout (TIR) is held to 0.0011 inches, making it suited for applications where concentricity and repeatability are critical. This collet is installed by machinists and tool crib personnel in production and job shop environments where tight tolerances are required.

This round collet is used in CNC machining centers, milling machines, and other rotating spindle equipment that require precision toolholding with controlled runout. It is appropriate for both production runs and precision one-off work where tool concentricity directly affects surface finish and dimensional accuracy. The 21/32-inch bore accommodates round-shank cutting tools, drill shanks, or other cylindrical tooling of that diameter.

Key Features

• 21/32-inch bore size for round-shank tooling
• TIR of 0.0011 inches for high-precision concentricity
• 1-11/16-20 internal thread for collet chuck engagement
• M47.5 x 1.75 external thread for toolholder interface
• 4.31-inch overall length for standard chuck depth clearance

Compatibility

Designed for use in collet chucks and toolholding systems that accept the M47.5 x 1.75 external thread and 1-11/16-20 internal thread interface. Verify chuck specifications before installation to confirm thread and bore compatibility.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the spindle before inserting or removing the collet from the chuck body. Use the appropriate collet wrench and chuck spanner for proper seating and torque - do not use makeshift tools that could damage the thread or collet taper. Inspect the bore and threads for chips or debris before assembly to maintain TIR performance.