MZG Strong Tool Holder System
MZG provide a comprehensive and detailed introduction to the Strong Tool Holder, also known as a Milling Chuck. This category of tool holder is the undisputed workhorse for applications where maximum clamping force, rigidity, and high torque transmission are the primary requirements. It is engineered for heavy-duty cutting operations that would overwhelm standard collet systems.
Massive Clamping Force and Torque Transmission
Sophisticated mechanical clamping system with needle roller bearings generates significantly more clamping power than traditional ER collet chucks, providing exceptional resistance to tool pull-out and slippage.
Exceptional Rigidity and Vibration Damping
Immense clamping force creates incredibly rigid connection that minimizes tool deflection and effectively dampens vibrations, enabling deeper cuts and higher material removal rates.
High Precision for Demanding Tasks
MLT series achieves outstanding concentricity of 0.001mm to 0.005mm for high-performance roughing and semi-finishing, while maintaining excellent precision despite focus on power.
System Performance Analysis
The performance of a Strong Tool Holder is defined by its immense power, stability, and reliability under the most demanding cutting conditions. The core lies in its sophisticated mechanical clamping system that utilizes a cage of needle roller bearings positioned between the inner surface of the chuck body and the outer surface of the clamping bore section.
As the clamping nut is tightened, these bearings roll along an inclined race, efficiently converting rotational torque into a massive, uniform radial clamping force that grips the tool shank. This mechanism generates significantly more clamping power than a traditional ER collet chuck, providing exceptional resistance to tool pull-out and slippage.
The immense clamping force creates an incredibly rigid connection between the tool and the holder, minimizing tool deflection and effectively dampening vibrations at the source. By mitigating chatter, the strong tool holder enables deeper axial and radial depths of cut, leading to higher material removal rates and improved productivity.
Despite their focus on power, modern strong tool holders offer excellent precision. The MLT series achieves outstanding concentricity of 0.001mm to 0.005mm, making it suitable for high-performance roughing and semi-finishing, while other models maintain reliable concentricity within 0.015mm.
Key Performance Indicators
- MLT Concentricity: 0.001-0.005mm
- C Series Concentricity: ≤0.015mm
- Balance Grade: G6.3 (8,000 RPM)
- Optional Balance: G2.5 (25,000 RPM)
- Collet Range: 4-32mm diameter
Our Products
DAT-C Milling Machine Tool Holder
C34Incorporates a slotted inner bore to prevent slippage and enhance clamping force, along with roller bearings to minimize friction and detachment. It is waterproof and dustproof with end face contact clamping, preventing overtightening.
BT-MLT Milling Machine Tool Holder
C35Offers waterproof and dustproof capabilities with end face contact clamping. Its design prevents overtightening damage, and a sealed structure eliminates dirt and debris harm.
DAT-MLT Milling Machine Tool Holder
C36Provides waterproof and dustproof features with end face contact clamping. Its design prevents overtightening, and a sealed structure protects against contamination.
HSK-MLT Milling Machine Tool Holder
C37Features waterproof and dustproof design with end face contact clamping and a sealed structure to prevent damage. Capable of dynamic balance up to G6.3, 8000RPM.
NT-MLC Milling Machine Tool Holder
C37Utilizes a high-strength brass retainer to guide roller bearings for perfect sliding motion, and employs special hydraulic oil that prevents solidification.
NT-MCST Milling Machine Tool Holder
C38Designed to be waterproof and dustproof with end face contact clamping. Its sealed structure prevents damage from dirt and debris. Achieves dynamic balance up to G6.3, 8000RPM.
BT-MCST Milling Machine Tool Holder
C38Features a waterproof and dustproof design with end face contact clamping, and a sealed structure to eliminate dirt and debris damage. Capable of dynamic balance up to G6.3, 8000RPM.
DAT-MCST Milling Machine Tool Holder
C39Offers waterproof and dustproof properties with end face contact clamping and a sealed structure for protection. Achieves dynamic balance up to G6.3, 8000RPM.
MCST Collets Chuck Kit
C40A comprehensive set of strong type collet chuck tool holders, featuring waterproof and dustproof design, balanced to G6.3, 8000RPM.
Product Gallery
Technical Parameters
Clamping Mechanism & Precision
Needle roller bearing system on tapered race actuated by clamping nut. MLT series achieves 0.001mm-0.005mm concentricity, while C series maintains ≤0.015mm concentricity. Six internal grooves enhance grip on Morse taper shanks.
Dynamic Balance & Interface Types
Standard balance grade G6.3 at 8,000 RPM for heavy milling, optional precision balance G2.5 at 25,000 RPM. Available in BT, DAT, HSK-A, NT interfaces with comprehensive collet systems (ST20, ST25, ST32, ST42).
Robustness & System Protection
Waterproof and dustproof sealed design prevents coolant and contaminant penetration. Features overtightening protection, high-strength brass retainer, and special non-solidifying hydraulic oil for enhanced performance.
Application Scenarios & Applicable Machining
Application Scenarios
- Heavy-Duty Roughing: Primary application excelling at milling large volumes of material from steel, cast iron, stainless steel, and high-temperature alloys
- High-Torque Milling: Ideal for large-diameter cutters such as face mills, shoulder mills, and high-feed mills where significant rotational force is required
- Heavy Drilling and Boring: C-type models specifically designed to securely grip flat-tail Morse taper drills, preventing slippage during high-torque operations
- Slotting and Pocketing: High rigidity and anti-pull-out security perfect for aggressive full-width slotting and deep pocket milling with extreme side loads
- General Purpose Workhorse Machining: Single, highly reliable tool holder for job shops requiring versatile solution for demanding tasks from roughing to semi-finishing
Machining Operations
- Maximum Clamping Force: Generates and maintains immense grip on tool shank ensuring absolute security and preventing slippage during aggressive cuts
- Rock-Solid Rigidity: Creates connection that minimizes tool deflection and dampens vibration, enabling higher productivity and extending tool life
- High Torque Transmission: Efficiently transfers full power and torque of machine spindle to cutting edge without loss or slippage
- Long-Term Reliability: Robust, sealed designs protect internal mechanisms from harsh workshop environment, guaranteeing consistent performance
- Environmental Protection: Waterproof and dustproof sealed structure prevents coolant and contaminant penetration for extended service life
Main Functions
Primary Functions
- Deliver Maximum Clamping Force: Generate and maintain immense grip on tool shank, ensuring absolute security and preventing slippage during aggressive cuts
- Ensure Maximum Rigidity and Stability: Create rock-solid connection that minimizes tool deflection and dampens vibration for higher productivity
- Transmit High Levels of Torque: Efficiently transfer full power and torque of machine spindle to cutting edge without loss or slippage
Performance Benefits
- Provide Long-Term Reliability: Robust, sealed designs protect internal mechanisms from harsh workshop environment, guaranteeing consistent performance
- Protect Tooling Investment: Waterproof and dustproof sealed structure prevents contamination damage and ensures extended service life
- Versatile System Solution: Comprehensive range of interfaces and collet systems for wide spectrum of demanding machining applications
Need Professional Strong Tool Holder Solutions?
Our technical team can help you select optimal strong tool holders for heavy-duty cutting operations, high-torque milling, and demanding machining applications. From maximum clamping force to comprehensive system protection, we provide complete strong tool holder solutions.
