Lyndex-nikken 300-061 Round Collet 61/64 Inch 3-3/4 Oal

Product Description

The LYNDEX-NIKKEN 300-061 is a round collet designed for precision workholding in CNC machining and manual turning applications. It accepts a 61/64-inch bore diameter and features a 1.988-20 external thread for secure mounting in compatible collet chucks and closers. The overall length measures 3-3/4 inches. With a total indicator runout (TIR) of 0.0011 inches, this collet delivers the concentricity required for tight-tolerance turning, grinding, and milling work. Machinists and toolroom technicians rely on this type of collet for repeatable part holding across production and job-shop environments.

This round collet is suited for use in lathe spindles, collet chucks, and draw-bar style closers that accept the 1.988-20 external thread standard. It is appropriate for both production machining cells and toolroom setups where bore size of 61/64 inch is required. Typical applications include bar stock holding, secondary operations, and precision part gripping where runout control is critical.

Key Features

• 61/64-inch bore diameter for precise round workpiece holding
• 1.988-20 external thread for secure chuck engagement
• 3-3/4-inch overall length suits standard collet closer depth requirements
• 0.0011-inch TIR for high concentricity and repeatable positioning
• Round collet design compatible with standard collet chuck systems

Compatibility

Designed as an OEM-style round collet for use in collet chucks and closers accepting a 1.988-20 external thread with a 61/64-inch bore capacity.

Installation Notes

Installation is typically performed by a machinist or toolroom technician. Before inserting or removing the collet, ensure the machine spindle is fully stopped and the draw bar or closer mechanism is released. Use the correct collet wrench or spanner to engage the external thread without cross-threading. Inspect the collet bore and seating surfaces for chips or wear before each use to maintain TIR performance.