Parlec 5UMER25-0625 ER25 Collet 0.625 Inch

Product Description

The PARLEC 5UMER25-0625 is an ER25 series collet designed for precision workholding in CNC machining centers, milling machines, and drilling applications. It accepts a 0.625 inch shank diameter with a minimum collet capacity of 0.586 inches, giving the toolholder a usable clamping range suited to a variety of cutting tool shanks. The collet holds a Total Indicator Runout (TIR) of 0.0002 inches, making it appropriate for finishing operations and applications where spindle concentricity directly affects surface quality and tool life. Overall length is 1.338 inches. This collet is installed by machinists and CNC setup technicians in production and job shop environments.

The 5UMER25-0625 fits ER25 collet chucks and is used in both horizontal and vertical machining centers as well as manual milling and drilling spindles that accept the ER25 standard. Its 5/8 inch nominal size covers common end mill, drill, and reamer shank diameters in that range. This collet is suited for light to medium-duty material removal as well as precision finishing passes where low runout is critical to part tolerance.

Key Features

• ER25 collet series for broad chuck compatibility
• 0.625 inch nominal collet size with 0.586 inch minimum clamping capacity
• 0.0002 inch TIR for high-precision, low-runout tool holding
• 1.338 inch overall length for compact tool projection
• Lightweight at 0.25 pounds for easy handling during tool changes

Compatibility

Designed as an OEM-style replacement or standard collet for ER25 series collet chucks used in CNC machining centers, milling machines, and drilling spindles that accept the ER25 collet standard.

Installation Notes

Installation is performed by a machinist or CNC setup technician. Before changing collets, de-energize the machine, engage the spindle lock, and follow the machine tool builder lockout procedure. Seat the collet fully into the nut before threading onto the chuck body, and torque the nut with the appropriate ER25 collet wrench to the chuck manufacturer specification. Avoid overtightening, which can distort the collet bore and increase runout.