ER16 7 mm Collet Tool Holder

The ER16 7 mm Collet is a critical component for modern CNC machining centers, ensuring secure and precise attachment of cutting tools to the spindle. Designed according to DIN 6499 (ISO 15488) standards, these collets operate on a conical clamping principle. As the nut is tightened, the collet undergoes elastic deformation, narrowing its inner diameter to grip the cutting tool with high, uniform radial force. This mechanism ensures axial and radial stability, maintaining tool position even under high speeds and demanding cutting conditions, which directly enhances machining precision, surface finish, and dimensional accuracy.

Manufactured from high-alloy tool steel and subjected to multi-stage heat treatment, this collet offers superior hardness (58-62 HRC), wear resistance, and fatigue life. The inner and outer conical surfaces are precision-ground to optimize friction and distribute clamping force evenly. The ER16 standard provides universal compatibility across a wide range of CNC equipment. Proper tightening with a dedicated collet nut and torque wrench is recommended to prevent slippage or vibration, thereby extending tool life.

Key Advantages:

• High-Precision Clamping: Offers low runout accuracy, minimizing deviation from the rotation axis. This ensures uniform load distribution on cutting edges, extending tool life and improving surface finish (Ra, Rz).
• Maximum Stability and Vibration Reduction: The optimized conical design prevents axial or radial movement, minimizing vibrations during aggressive cutting parameters and reducing the risk of tool breakage.
• Wide Application and Easy Integration: The industry-standard ER16 size ensures flexibility across various CNC milling, turning, and drilling machines, simplifying inventory and enabling quick tool changes.

Mermak CNC Experience: With 16 years of expertise based in our Ankara Uzay Sanayi facility, Mermak provides reliable industrial solutions. We maintain up-to-date stock levels, ensuring that listed products are ready for immediate dispatch without production delays. We serve customers in the United Kingdom, United States, Canada, Australia, New Zealand, South Africa, and other international markets with careful packaging, professional logistics, and full documentation support. Contact us via our official channels for product videos or factory viewing requests.