ER20 3 mm Collet Tool Holder

ER20 3 mm Collet Tool Holder

Industrial Automation Components | Superior Performance Series

Product Overview

The ER20 3 mm Collet is a critical component designed for secure, run-out-free, and repeatable clamping of cutting tools or cylindrical workpieces in high-precision machinery such as CNC machining centers, milling machines, and lathes. Manufactured according to the ER (DIN 6499/ISO 15488) standard, this collet provides radial clamping for 3 mm diameter drills, end mills, engraving bits, and other cutting tools. Its primary function is to maintain the axial and radial position of the tool under high RPM and cutting forces, minimizing vibration, improving surface finish, and extending tool life.

This ER20 collet is crafted from high-strength, wear-resistant high-carbon alloy steel, hardened through specialized heat treatment, and finished with precision grinding. This methodology ensures durability against high clamping forces and repetitive stress while providing low surface roughness and high geometric accuracy. Mermak CNC offers various run-out precision options (3, 5, 10, and 20 microns) to suit specific application requirements, optimizing processing costs and maximizing final product quality.

Key Advantages

• Ultra-Precise Run-out Control: Minimizes tool deviation from the rotation axis, ensuring even load distribution across cutting edges and superior surface finish.
• Wide ER Standard Compatibility: Fully compliant with DIN 6499/ISO 15488, ensuring seamless integration with all standard ER20 tool holders and collet nuts.
• Secure and Stable Clamping: Provides high, uniform radial clamping force, preventing tool slippage or axial movement during aggressive machining operations.

Mermak International Quality

With 16 years of experience, Mermak operates from our Ankara Uzay Sanayi facility. We maintain up-to-date stock levels and pricing on our website. Stocked items are prepared immediately for shipment without production delays. We provide careful packaging, professional documentation, and reliable logistics for our international customers in the United Kingdom, United States, Canada, Australia, New Zealand, South Africa, and beyond. We are committed to supporting our global partners with efficient service and technical transparency.

Technical Specifications

• Collet Type: ER Collet (DIN 6499/ISO 15488 Standard)
• Standard: ER20
• Clamping Diameter: 3 mm