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MTA4-APU16 Precision Drill Chuck Holder for CNC Milling and Tapping Operations
MTA4-APU16 Drill Chuck Tool Holder is a high-precision chuck designed for secure tool clamping in CNC milling, drilling, and tapping operations. This chuck provides outstanding performance, high rigidity, and stable operation even under high torque and rotational loads. It is an excellent choice for CNC machining centers and milling machines requiring reliable tool clamping during demanding operations.
Usage of MTA4-APU16 Drill Chuck in CNC Applications
The MTA4-APU16 precision drill chuck is commonly used in CNC milling machines, boring machines, and tapping machines. It is ideal for securely clamping cylindrical shank tools such as drills, taps, and reamers. Thanks to its powerful grip and balanced construction, it ensures minimal runout, making it suitable for both high-speed and high-torque machining tasks.
Key Features:
- Constructed from hardened alloy steel for maximum durability and wear resistance
- High gripping force for safe and stable clamping of drills and taps
- Balanced design suitable for high-speed CNC machining
- Compatible with APU16 industrial chucks with integrated keyless tightening
- Designed according to DIN 228 (Morse) standard for universal spindle fit
- Ideal for use in metalworking, toolmaking, and automotive manufacturing
Specifications:
| Model | MTA4-APU16 |
| Type | Drill Chuck Holder |
| Chuck Type | APU16 (Self-tightening / Keyless) |
| Shank | MTA4 |
| Clamping Range | 1–16 mm |
| Material | Alloy Tool Steel |
| Hardness | HRC 56–60 |
| Accuracy | ≤ 0.01 mm |
| Dynamic Balance | G2.5 - 15000 RPM |
| Standard | Morse DIN 228-A |
Shank specifications:
- Reliable tool fixation with Morse taper tang: The tang (foot) is securely wedged into the spindle slot, preventing the Morse taper shank from slipping or rotating during machining operations.
- Effortless removal after work: Thanks to the tang design, the tool holder can be easily disengaged from the spindle, simplifying the removal of drill chucks, reamers, or end mills.
- Quick tool change advantage: The tang-equipped Morse taper tool holders enable fast and secure replacement of various tooling—ideal for operations involving frequent tool changes such as drilling, reaming, or milling.
- Improved workflow efficiency: The integrated tang on the Morse shank streamlines both installation and removal of the tool holder, making it especially convenient in CNC or manual machining setups requiring frequent equipment swaps.
- Summary: Morse taper shanks with tang offer secure tool retention, ease of use, and quick-change capability—enhancing productivity and reliability in metalworking and industrial machining processes.
Applications in Professional CNC Machining
The MTA4-APU16 CNC drill chuck is widely used in industries such as aerospace, automotive production, mold manufacturing, and precision engineering. It is especially effective in operations that require repeated tool changes and stable clamping without using keys or wrenches. The APU16 system ensures consistent performance even under heavy loads and frequent tool swaps.
Important Usage Notes:
- Only use tools with smooth cylindrical shanks — avoid using square or stepped tools
- Ensure the clamping range (1–16 mm) is suitable for your tool diameter
- Clean the chuck and shank before installation to avoid imbalance or slippage
Package Includes:
- 1 x MTA4 APU16 Drill Chuck Holder
- 1 x Protective Plastic Case
Enhance your CNC machine's performance with the MTA4-APU16 keyless drill chuck holder — designed for secure, accurate, and efficient machining operations in high-demand environments.

