CNC tool shanks for secure and stable tool mounting

External Groove Tool Holder – NSR 2525 M3 NI9 | Kennametal

NSR 2525 M3 NI9

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SKU: 20253162 Category: Brand:

This series of tool holders serves as the critical interface connecting the CNC machine tool spindle to the cutting tool. Designed specifically for modern CNC machining that demands high precision, efficiency, and stability, they are manufactured from premium materials and with advanced processes. This ensures exceptional rigidity, dynamic balance accuracy, and long service life under high-speed and heavy-load conditions, making them a key guarantee for achieving superior machining results.

Key Features

1. Superior Precision & Rigidity

  • High-Precision Taper Shank: The tool holder taper shank (BT, CAT, HSK, etc.) is ultra-precision ground to achieve optimal contact with the machine spindle, ensuring extremely high radial and axial runout accuracy (typically ≤3μm at the nose).

  • Reinforced Structural Design: An optimized internal structure and wall thickness provide excellent bending and torsional rigidity, effectively suppressing vibration and improving machined surface finish.

2. Advanced Clamping Technology

  • Diverse Clamping Systems: Offers various clamping solutions includingHigh-Power Hydraulic Chucks,High-Precision Collet Chucks (ER, TG, etc.),Side-Lock, andShrink Fittypes to meet a wide range of applications from finishing to roughing.

  • Excellent Concentricity: The precision clamping mechanism ensures the tool shank is gripped evenly and firmly, achieving ultra-high repeatability and minimal runout.

3. Outstanding Dynamic Balance Performance

  • Full-Series High-Speed Balancing: All tool holders are precision balanced during manufacturing, achieving a balance grade of G2.5 or better (@ maximum rated speed). This significantly reduces centrifugal vibration at high speeds, protects spindle bearings, and extends tool life.

4. High Quality & Long Service Life

  • Premium Alloy Steel: The body is made of high-strength alloy steel, undergoing special heat treatment (e.g., nitriding) for high surface hardness, excellent wear resistance, and a tough core.

  • Corrosion-Resistant Finish: Surfaces often feature nickel plating or other anti-corrosion treatments to suit various workshop environments.

Applications

  • Suitable for variousVertical/Horizontal Machining Centers, Turning-Milling Centers, and CNC Lathes.

  • Widely used in machiningsteel, cast iron, aluminum alloys, superalloys, and compositesfor industries such asAerospace, Automotive, Mold & Die, Precision Parts, and Medical Devices.

Technical Specifications (Example)

  • Machine Interface: BT40, CAT40, HSK-A63, etc.

  • Clamping Type: ER Collet Chuck, Hydraulic Chuck, Shrink Fit Holder, Side-Lock, etc.

  • Clamping Range: e.g., ER32: φ4-20mm

  • Maximum Speed: Model-dependent, up to 40,000 rpm or higher.

  • Balance Grade: G2.5 @ 20,000 rpm (or to customer specification)

  • Tool Runout: ≤0.003mm (3μm) at a specified gauge length.

Why Choose Our Product

  • Proven Reliability: Every tool holder undergoes stringent quality inspection, guaranteeing excellent performance ready for immediate use.

  • Enhanced Productivity: High rigidity and precision design allow for higher cutting parameters, increasing metal removal rates and reducing cycle times.

  • Quality Assurance: Excellent dynamic balance and clamping precision are the foundation for achieving superior surface finish, dimensional accuracy, and extended tool life.

  • Complete Solution: We offer a comprehensive series of models and professional technical support to meet all your machining needs.

Providing a Solid Equipment Foundation for Your Smart Manufacturing.

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