Techniks 04225-05 ER25 Collet 5.00mm Through Coolant

Product Description

The TECHNIKS 04225-05 is an ER25 series collet designed for high-precision CNC machining and toolholding applications. Built to a true indicator runout (TIR) of 0.0002 inches (0.005 mm), this collet delivers the concentricity demanded by finish milling, drilling, and reaming operations where tool runout directly affects surface finish and tool life. The 5.00 mm collet size accommodates standard metric shank tooling. Through-coolant capability routes cutting fluid directly to the tool tip, supporting higher feed rates and extended insert life in deep-bore and high-speed applications. Machinists and CNC setup technicians working in precision job shops, aerospace, or mold-and-die environments will find this collet suited to demanding tolerances.

This collet is used in ER25-compatible collet chucks mounted in machining centers, CNC lathes, and manual milling machines. The ER25 system is one of the most widely adopted collet standards in metalworking, and this 5.00 mm size targets metric tooling commonly used in mold work, medical component machining, and general precision part production. Through-coolant support makes it suitable for deep-cavity work where flood coolant does not adequately reach the cutting zone.

Key Features

• ER25 collet series - fits all ER25-compatible collet chucks and toolholders
• 5.00 mm collet size for metric shank cutting tools
• TIR of 0.0002 inches (0.005 mm) for high-precision concentricity
• Through-coolant design routes fluid directly to the tool tip
• Compact, standardized ER profile for fast changeover

Compatibility

Designed as a direct-fit replacement or production collet for any ER25-compatible collet chuck or toolholder accepting 5.00 mm metric shank tooling.

Installation Notes

Installation is performed by CNC machinists and toolroom technicians. Ensure the spindle is fully stopped and the machine is in an e-stop or lockout state before changing collets. Clean the collet bore and chuck taper thoroughly before seating the collet to avoid false runout caused by chips or debris. Use a calibrated torque wrench and the appropriate ER25 spanner nut wrench to achieve proper clamping force - over-tightening can deform the collet and degrade TIR performance.