Accupro 784859 ER16 Collet 0.349 Inch Capacity

Product Description

The ACCUPRO 784859 is an ER16 series collet designed for use in ER16-compatible collet chucks on CNC mills, machining centers, and manual milling machines. With a collet size of 0.349 inches and a minimum collet capacity of 0.313 inches, this collet clamps round shank tooling including end mills, drills, and reamers. It is installed by machinists and CNC operators performing toolholding setup. The compact dimensions of 1.9 inches in height and 1.2 inches in width and length make it a standard fit for ER16 chuck bodies used in light to medium-duty cutting applications.

This collet is suited for production and job-shop environments where ER16 toolholding is the standard. It is used in vertical and horizontal machining centers as well as benchtop mills requiring accurate, repeatable tool clamping. The 0.349-inch capacity accommodates commonly used fractional and near-fractional shank sizes. It ships individually and is sold as a single unit, making it practical for replacing a worn collet or expanding an existing ER16 set.

Key Features

• ER16 collet series for use with standard ER16 collet chucks
• 0.349-inch collet size with a minimum capacity of 0.313 inches
• Compact profile: 1.9 inches height, 1.2 inches width, 1.2 inches length
• Lightweight at 0.05 pounds for easy handling during tool changes
• Single-unit packaging allows individual replacement without purchasing a full set

Compatibility

Designed as a direct-fit replacement collet for ER16-series collet chucks used in CNC and manual milling applications. Specific chuck compatibility was not stated in the product data — confirm ER16 designation on the chuck body before installation.

Installation Notes

ER16 collets are installed by machinists or CNC setup technicians. Always power down and lock out the spindle before changing toolholding components. Insert the collet into the nut before placing both onto the chuck body, and use the appropriate ER16 collet nut wrench and chuck wrench to tighten to the chuck manufacturer's specified clamping torque. Inspect the collet bore and chuck taper for chips or damage before assembly to ensure accurate tool runout.