Techniks 41625 ER25 Slotted Collet Nut Through Coolant

Product Description

The TECHNIKS 41625 is an ER25 slotted collet nut designed for through-coolant applications on CNC machining centers and milling spindles. The slotted design allows coolant to flow directly through the nut to the cutting tool, improving chip evacuation and extending tool life in demanding cutting operations. At 0.2 pounds, it is a lightweight, precision-machined component that drops into any ER25-compatible toolholder. Machinists and toolroom technicians install this nut as a direct functional part of the workholding assembly.

This collet nut is suited for ER25 collet chucks used in production milling, drilling, and tapping operations where through-spindle or through-tool coolant delivery is required. It is a standard replacement or spare component for shops running high-pressure coolant systems. The ER25 series is widely used across both light-duty and production-class machining centers in job shops and manufacturing environments.

Key Features

• Slotted design enables through-coolant flow directly to the cutting tool
• Fits ER25 collet series toolholders
• Lightweight at 0.2 pounds for reduced spindle load contribution
• Direct replacement for worn or damaged ER25 collet nuts in through-coolant setups

Compatibility

Designed for use with ER25 collet series toolholders that support through-coolant delivery. Verify spindle and chuck thread specifications before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the spindle before removing or installing any collet nut. Use the correct ER25 collet nut spanner wrench to achieve proper torque without damaging the nut or collet seating surface. Inspect collet and chuck threads for wear or contamination before assembly.