Kennametal 1729818 ER16 Collet 1/4 Inch

Product Description

The KENNAMETAL 1729818 is an ER16 precision collet designed for use in CNC machining centers, milling machines, and other rotating spindle equipment that accept the ER16 collet standard. This collet holds workpiece tooling at a nominal 0.25-inch (1/4-inch) shank diameter with a total indicator runout (TIR) of 0.0152mm (0.0006 inches), making it suitable for close-tolerance machining operations. The overall length measures 1.083 inches (27.51mm). It is installed by machinists and CNC operators as a standard toolholding consumable in production and job-shop environments.

This collet fits ER16-series collet chucks and toolholders across a wide range of machining setups. Typical applications include end mill holding, drill holding, and reamer holding in light-to-medium-duty milling and drilling operations. The 1/4-inch capacity makes it a common choice for smaller-diameter cutting tools used in precision component manufacturing. It is sold individually and is intended as a direct replacement or spare for existing ER16 collet inventories.

Key Features

• ER16 collet series for broad compatibility with ER16-standard chucks and toolholders
• 0.25-inch (1/4-inch) nominal collet capacity for standard shank tooling
• Low TIR of 0.0152mm (0.0006 inches) supports close-tolerance machining
• Overall length of 1.083 inches (27.51mm) fits standard ER16 chuck depth
• Sold as a single-piece unit with a minimum order quantity of one

Compatibility

Designed as an OEM-style replacement collet for use in any toolholder or spindle chuck manufactured to the ER16 collet standard.

Installation Notes

ER collets are installed and removed by machinists using an appropriate ER16 collet nut and spanner wrench. Always de-energize and lock out the spindle drive before changing collets. Inspect the collet bore and chuck taper for chips or damage before seating the collet. Do not exceed the collet capacity range when clamping tool shanks, as overloading reduces clamping force and increases runout.