Techniks 04545-03 ER25 Collet 1.339 in Oal

Product Description

The TECHNIKS 04545-03 is an ER25 series collet designed for use in CNC machining centers, milling machines, and other spindle-driven equipment that accept the ER25 collet standard. Collets of this type grip cutting tools or workpieces with consistent radial clamping force when drawn into a matching ER25 nut and chuck body. The 04545-03 has an overall length of 1.339 inches and weighs 0.5 pounds. It is the fundamental workholding component between the machine spindle and the cutting tool, making accurate fitment and condition critical to runout performance and tool life.

ER25 collets are widely used in light to medium-duty machining applications across job shops, production facilities, and maintenance environments. This collet is suited for operations where the ER25 chuck standard is already in place and a replacement or additional collet is needed to expand bore capacity or replace a worn unit. Machinists and CNC setup technicians are the primary installers.

Key Features

• ER25 collet series for compatibility with ER25 chuck bodies and nuts
• 1.339 inch overall length for standard ER25 seating depth
• Radial clamping design provides consistent grip force on tooling
• Lightweight at 0.5 pounds for easy handling during tool changes

Compatibility

Designed for use with ER25 series chuck bodies and matching ER25 collet nuts. Verify bore diameter of the specific collet against the shank diameter of the tooling being held before installation.

Installation Notes

Installation is performed by machinists or CNC technicians. Before changing collets, ensure the machine spindle is fully stopped and the control is placed in a safe state per the machine tool builder's lockout procedure. Seat the collet into the ER25 nut before threading onto the chuck body, and tighten with the appropriate ER spanner wrench to the chuck manufacturer's specified procedure. Inspect the collet bore and taper surfaces for wear or debris before each use, as contamination directly affects runout.