MZG Drill Chuck Tool Holder System
As a senior industrial tooling expert at MZG Tool Machine Company, I am pleased to present a comprehensive and detailed introduction to the Drill Chuck Tool Holder. This system is the quintessential solution for holding straight-shank drilling tools and is a foundational component in virtually every machine shop, from high-production CNC centers to conventional manual mills. The system is broadly divided into two main philosophies: fully integrated, high-precision holders (like the APU series) and a highly versatile modular system of chuck heads (like the J/JM series) combined with separate arbors.

High-Precision Clamping (APU Series)
Integrated APU Drill Chuck Holder engineered for superior performance with exceptional concentricity. By integrating chuck mechanism directly into precision-ground shank, tolerance stacking is eliminated, resulting in extremely low runout.
Robust, Heavy-Duty Performance (J/JM Series)
J and JM series keyless drill chucks designed for robustness and high clamping force, ideal for medium and heavy-duty drilling applications. Many models feature self-tightening mechanism where chuck's grip increases as drilling torque rises.
Unmatched Versatility and Modularity
Combination of J/JM chuck heads with vast range of arbors represents pinnacle of versatility. Modular approach allows single chuck head to be used across multiple machines simply by changing the arbor.
System Performance Analysis
The performance of a Drill Chuck Tool Holder is judged by its clamping security, precision (runout), and adaptability to different machining environments. The integrated APU Drill Chuck Holder is engineered for superior performance with exceptional concentricity.
By integrating the chuck mechanism directly into a precision-ground shank (BT, HSK, CAT, etc.), tolerance stacking is eliminated, resulting in extremely low runout. This precision is paramount for producing straight, accurately sized holes, especially with small-diameter drills.
The J and JM series keyless drill chucks are designed for robustness and high clamping force, making them ideal for medium and heavy-duty drilling applications. Many models feature self-tightening mechanism, where chuck's grip increases as drilling torque rises.
The combination of J/JM chuck heads with vast range of arbors represents pinnacle of versatility. This modular approach allows single chuck head to be used across multiple machines simply by changing the arbor.
Key Performance Indicators
- System Types: APU, JM, J Series, Arbor Series
- Clamping Range: 0.2-25mm (Micro to Heavy-duty)
- Precision: 0.05mm to 0.18mm
- Interfaces: BT, SK, NT, HSK, CAT, NBT, ISO, C, MTA, R8, MT
- Application: Straight-shank drilling tools
Our Products

APU Milling Machine Tool Holder
C59Milling machine applications

JM Drill Chuck Milling Machine Tool Holder
C60Milling machine applications

J Keyless Drill Chuck
C61Various clamping ranges

J Spanner Drill Chuck
C62Medium & heavy duty drilling for CNC and woodworking machines

Three-sided Milling Cutter Arbor (-XS)
C62Three-sided milling cutters and saw blade milling cutters

Morse Taper Drill Chuck Arbors (MT/JT)
C63Morse taper drill chuck connections

Cylindrical Drill Chuck Arbors (C/JT)
C63Cylindrical shank drill chuck connections

R8 Drill Chuck Arbors (R8/JT)
C63R8 taper drill chuck connections
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Technical Parameters
Integrated System (APU Series)
One-piece, integrated chuck and shank design. Available in multiple capacities, such as 0.2-13mm (1/64"-1/2") and 0.2-16mm (1/64"-5/8"). Extremely comprehensive shank interface types including BT, SK, NT, HSK, CAT, NBT, ISO, C (Straight Shank), MTA, R8, and MT.
Modular System (Chuck Heads and Arbors)
Chuck Heads (J/JM Series): Keyless (self-tightening) and Spanner-tightened models. Wide range from micro (0.2-3mm) up to heavy-duty (0.2-25mm). Mounting interface connects via Jacobs Tapers (J0, J1, J2, J6, J33, etc.), Morse Tapers (B10, B12, B16, B18, etc.), or Female Threads (Metric or UNF). Precision typically ranging from 0.05mm to 0.18mm.
Arbors (Adapters) System
Function to connect chuck head (with JT mount) to machine spindle. Types include: Morse Taper Arbors (MT/JT) connecting JT chucks to MT spindles (e.g., MT2-JT6). R8 Arbors (R8/JT) connecting JT chucks to R8 spindles, with standard 7/16"-20 drawbar thread. Cylindrical Arbors (C/JT) straight shank arbors to hold JT chuck in collet or side-lock holder.
Application Scenarios & Applicable Machining
Application Scenarios
- Integrated APU Holders: Premier choice for modern CNC machining centers. High precision essential for applications in aerospace, mold & die, and medical manufacturing where hole accuracy and tool life are critical. Availability in high-speed HSK and other advanced shanks makes them perfect for high-RPM drilling cycles
- General CNC Milling: Straight-shank arbor holding J-series chuck provides quick and robust solution for non-critical drilling operations
- Conventional Machining: R8 arbor with J-series chuck is standard setup for manual Bridgeport-style mills. Morse Taper arbor essential for use in larger manual mills and drill presses
- Lathe Operations: Morse Taper or straight-shank arbor allows these chucks to be used in tailstock of lathe for drilling operations
- Fabrication and Maintenance Shops: System's robustness and adaptability make it ideal for MRO (Maintenance, Repair, and Operations) and general fabrication work
Main Functions
- Securely Grip Straight-Shank Tools: Fundamental purpose is to provide concentric, high-force clamp on cylindrical shank of drill bit, reamer, or other tool
- Provide High-Precision Interface for CNC Machining (APU): Primary function in this context is to minimize runout, thereby guaranteeing hole accuracy and maximizing performance and life of cutting tools
- Offer Robust and Versatile Modular Solution (J/JM + Arbors): Main function is to deliver reliable, adaptable, and cost-effective system for drilling across widest possible range of new and legacy machinery
- Enable System Adaptability: Function of arbor system is to act as crucial bridge, allowing standardized chuck heads to seamlessly connect to various machine spindle interfaces, ensuring maximum utility of tooling assets
Main Functions
Core Functions
- Securely Grip Straight-Shank Tools: Fundamental purpose is to provide concentric, high-force clamp on cylindrical shank of drill bit, reamer, or other tool
- Provide High-Precision Interface for CNC Machining (APU): Primary function is to minimize runout, thereby guaranteeing hole accuracy and maximizing performance and life of cutting tools
System Benefits
- Offer Robust and Versatile Modular Solution (J/JM + Arbors): Main function is to deliver reliable, adaptable, and cost-effective system for drilling across widest possible range of new and legacy machinery
- Enable System Adaptability: Function of arbor system is to act as crucial bridge, allowing standardized chuck heads to seamlessly connect to various machine spindle interfaces, ensuring maximum utility of tooling assets
Need Professional Drill Chuck Tool Holder Solutions?
Our technical team can help you select optimal drill chuck tool holders for your straight-shank drilling applications. From high-precision APU integrated systems to versatile modular J/JM chuck solutions, we provide the foundational components for every machine shop.