Catalog
Filter
Description
MTB4-APU16 Precision Drill Chuck Holder for CNC Milling and Tapping Operations
MTB4-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 MTB4-APU16 Drill Chuck in CNC Applications
The MTB4-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 | MTB4-APU16 |
| Type | Drill Chuck Holder |
| Chuck Type | APU16 (Self-tightening / Keyless) |
| Shank | MTB4 |
| 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-B |
Advantages of Morse Taper Shank for Milling and Lathe Machines
Morse Taper Shank with Thread is one of the most reliable and versatile ways of fastening cutting tools in the machine spindle. It is widely used in drill chucks, reamers, countersinks, milling cutters and lathe mandrels.
Main advantages:
- High centering accuracy: The Morse taper ensures a reliable fit of the tool and precise centering in the spindle, which is especially important for high-precision metalworking.
- Quick tool change: Due to the conical shape, insertion and extraction of the tool occurs quickly and effortlessly, which significantly reduces the time for retooling the machine.
- Increased rigidity of fastening: The threaded connection on the shank additionally fixes the tool, eliminating its rotation or loss at high speeds and vibrations.
- Simplified Extraction: The thread allows for easy extraction of the tool from the spindle even when jammed or tightly fitted, which is especially convenient in intensive production environments.
- Wide range of applications: Morse threaded shanks are used in turning, drilling, milling machines and machining centers to mount various tools - drills, reamers, collets, chucks, etc.
A reliable and versatile solution
The Morse threaded shank combines precision, rigidity and ease of use, making it an ideal choice for most types of metalworking machines. Due to its compatibility with international standards and ease of use, it is suitable for both industrial and individual applications.
Applications in Professional CNC Machining
The MTB4-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 MTB4 APU16 Drill Chuck Holder
- 1 x Protective Plastic Case
Enhance your CNC machine's performance with the MTB4-APU16 keyless drill chuck holder — designed for secure, accurate, and efficient machining operations in high-demand environments.

