Kennametal 1729819 ER16 Collet 5/16 Inch

Product Description

The KENNAMETAL 1729819 is an ER16 collet sized at 0.3125 inches (5/16 inch) for use in ER16-compatible collet chucks on CNC machining centers, milling machines, and drill presses. It delivers a Total Indicator Runout (TIR) of 0.0152mm (0.0006 inches), providing precise tool holding that supports accurate cutting performance in production and job-shop environments. The overall length is 1.083 inches. This collet is installed and serviced by machinists and CNC operators working with standard ER16 tooling systems.

This collet is suited for light to medium material removal applications where ER16 collet chucks are the specified workholding standard. It accepts cutting tools and drill shanks with a minimum collet capacity of 0.2725 inches up to the full 0.3125 inch nominal bore. Typical use cases include end mill holding, drill chuck applications, and precision boring setups on both manual and CNC spindles in machine shops, toolrooms, and manufacturing cells.

Key Features

• ER16 collet series for use with standard ER16 collet chucks
• 0.3125 inch (5/16 inch) nominal collet size
• Low TIR of 0.0152mm (0.0006 inches) for precise tool concentricity
• Minimum collet capacity of 0.2725 inches accommodates a range of shank diameters
• Overall length of 1.083 inches fits standard ER16 chuck depth

Compatibility

Designed as an OEM-style replacement collet for use in ER16-series collet chucks conforming to the standard ER16 collet interface.

Installation Notes

ER16 collets are installed by machinists and CNC operators using an ER16 collet nut and compatible chuck body. Power down and lock out the spindle before installing or removing any collet. Inspect the collet bore and chuck taper for chips or burrs before seating. Do not exceed the collet clamping range when selecting shank diameters.