Seco 00073540 ER16 Collet Chuck Spanner Wrench

Product Description

The SECO 00073540 is a spanner-style wrench designed for tightening and loosening ER16 collet chucks on CNC machining centers, milling machines, and similar rotating-spindle equipment. The wrench engages the chuck nut directly, providing the leverage needed to achieve proper collet seating and secure workpiece or tool holding. Weighing 1 pound, it is a lightweight, single-purpose hand tool suited for use at the machine or on a toolroom bench. Machinists, CNC operators, and tool-crib technicians rely on this type of wrench to maintain consistent collet clamping force without damaging the chuck nut.

This wrench is intended for use with ER16 series collet chuck systems, which are commonly found in both light-duty and production machining environments. It is a standard replacement or spare wrench for shops running ER16 toolholders across multiple machines or stations, reducing downtime when a wrench is misplaced or worn. Its dedicated fit to the ER16 nut profile helps prevent slippage during tightening operations.

Key Features

• Spanner wrench design engineered specifically for ER16 collet chuck nuts
• Dedicated ER16 series fit helps prevent rounding or damage to chuck nut
• Lightweight at 1 pound for easy handling at the machine
• Single-piece replacement tool suitable for toolroom or machine-side use

Compatibility

Designed for use with ER16 series collet chuck systems. Consult your toolholder documentation to confirm nut profile compatibility before installation.

Installation Notes

Ensure the machine spindle is fully stopped and the machine is powered down or placed in a safe lockout state before changing or tightening collets. Engage the spanner wrench squarely on the chuck nut flats to avoid slipping. Follow the toolholder manufacturer's recommended tightening procedure for proper collet seating. Do not use extensions or additional leverage beyond normal hand force unless specified by the toolholder manufacturer.