Enhance the precision and durability of your CNC machining projects with this high-performance Collet Chuck Holder, expertly crafted from premium 40cr alloy steel. Designed for optimal wear resistance and stability, this NT30 ER25 model delivers superior hardness and toughness thanks to advanced vacuum quenching and blackening treatments. Its fully ground shank ensures a secure connection and outstanding centering accuracy, making it an essential tool for high-speed machining applications. Key Features: · Premium 40cr Alloy Steel Construction: Provides excellent wear resistance and stable performance, ensuring long-lasting use under demanding conditions. · High Hardness and Toughness: Vacuum quenching treatment enhances the tool's hardness by carbon oxygen co-infiltration, while blackening treatment improves surface hardness, fatigue resistance, and wear resistance. The low-carbon steel core maintains strength and toughness to withstand impact under load. · Fully Ground Shank: The shank is precisely ground as a single piece to protect the taper hole connection of the power head, improving reliability and durability during operation. · Superior Centering Accuracy: Brightly ground surface and finely ground shank hole guarantee a high centering accuracy of 0.003, essential for precise machining results. · Dispersed Pressure Design: Integrally formed holder structure disperses pressure evenly across accurate needle rollers in the cage, making it ideal for processing large cutting amounts with improved structural rigidity. Specifications: · Material: 40cr Alloy Steel · Model: NT30 ER25 · Rear Drawing Thread: M12 · Tail Hole Diameter: Approx. 12mm / 0.47in · Structure Type: Integral · Accuracy: 0.003 · Scope of Application: Suitable for CNC machining centers, engraving machines, fine engraving machines, and other high-speed machines Package Includes: · 1 x Collet Chuck Holder This Collet Chuck Holder combines durability, precision, and structural integrity to meet the demanding requirements of professional CNC and engraving applications. Its exceptional hardness and wear resistance make it a reliable choice for improving machining efficiency and maintaining accurate tool alignment during high-speed operations.