BMT VS. VDI Static Tool Holders: What’s The Difference?

BMT static vs. VDI static tool holders

Do you know BMT VS. VDI static tool holders? BMT and VDI static tool holders are two of the most commonly used tool holders in CNC machines.

Choosing the right tool holder is important because it can affect the quality of the finished product, the efficiency of the machining process, and the overall productivity of the manufacturing operation.

In this blog post, we will discuss the differences between BMT and VDI static tool holders and their respective advantages and disadvantages.

What is BMT Static Tool Holder?

BMT (Base Mount Turret) static tool holder is a type of tool holder used in CNC lathes and turning centers. It is designed to hold stationary cutting tools during machining operations. BMT static tool holders are typically mounted directly onto the machine’s turret, providing a rigid and stable platform for cutting tools.

BMT static tool blocks come in a variety of sizes and configurations, allowing for a wide range of tool options. They can hold various types of cutting tools such as drills, boring bars, taps, reamers, and milling cutters.

BMT static tool holders

Advantage of BMT Static Tool Holders

  • Provides excellent rigidity and stability for cutting tools during machining operations.
  • Quick and easy to install, minimizing downtime and increasing productivity.
  • Offers a wide range of tool configurations for various types of machining operations.
  • Allows for fast tool changes, reducing setup times and increasing efficiency.
  • Provides high accuracy and repeatability in machining operations, resulting in consistent part quality.
  • Compatible with various types of CNC lathes and turning centers, making them versatile tooling options.
  • Requires minimal maintenance and is durable, providing long-lasting performance.
  • Reduces the need for manual adjustments during machining operations, improving operator safety.
  • Cost-effective solution for precision machining operations compared to other tool holders on the market.
  • Provides superior clamping force, ensuring that cutting tools remain securely in place during operation.

What is VDI Static Tool Holder DIN 69880?

VDI (Verband Deutscher Ingenieure) static tool holder is a type of tool holder used in CNC machines. It is designed to provide high precision and accuracy in machining operations.

VDI static tool holders are mounted onto the machine turret and are compatible with a range of tool sizes, making them suitable for various machining applications. They are known for their quick and easy tool-changing capabilities, which help to reduce downtime and increase productivity.

VDI STATIC tool holders

Advantages of VDI static tool holders

VDI static tool holders come in different sizes, ranging from VDI-20 to VDI-80, allowing for flexibility in tool selection. They offer high rigidity and torque transmission, enabling heavy-duty cutting and increased machining accuracy. VDI static tool holders are ideal for applications that require high precision and efficiency in CNC machining.

One advantage of using VDI static tool holders is that they offer more flexibility in terms of the number of tools that can be used.

However, they may not provide the same level of rigidity and torque transmission as BMT static tool holders.

BMT vs. VDI Static Tool Holders: A Comparison

BMT (Base Mount Turret) and VDI (Verein Deutscher Ingenieure) static tool holders are two popular types of tool holders used in CNC lathes and turning centers. While they both serve the same purpose of holding cutting tools during machining operations, there are some key differences between the two. Here is a comparison of BMT vs. VDI static tool holders:

Tooling System

BMT tool holders use a base mount turret system, while VDI tool holders use a standardized interface for mounting the tools.

Number of Tools

BMT tool holders can hold more tools than VDI tool holders. BMT systems can hold up to 12 or more tools, while VDI systems typically hold 6-8 tools.

Space Requirements

BMT tool holders require more space on the machine than VDI tool holders. This can be a disadvantage in smaller machines where space is limited.


VDI tool holders are more easily interchangeable than BMT tool holders. This makes it easier to switch out tools and customize the setup for different jobs.


BMT tool holders provide better rigidity and stability than VDI tool holders. This is due to their larger size and the fact that they are mounted directly to the machine spindle.


BMT tool holders are generally more expensive than VDI tool holders. This is because they require more material to manufacture and are capable of holding more tools.


Both BMT and VDI tool holders require regular maintenance to ensure they perform optimally. However, BMT tool holders require more frequent maintenance due to their larger size and a greater number of components.


VDI tool holders are generally more precise than BMT tool holders. This is because they use a standardized interface for mounting the tools, which helps to minimize runouts and improve accuracy.


VDI tool holders are more versatile than BMT tool holders. They can be used on a wider variety of machines and are compatible with more types of cutting tools.

Tool Changing Time

BMT tool holders generally have faster tool-changing times than VDI tool holders. This is because they can hold more tools and do not require as much time for indexing between tools.


In conclusion, choosing the right tool holder is crucial for achieving optimal performance in CNC machining operations.

Both BMT and VDI static tool holders have their advantages and disadvantages, and the decision on which to use will depend on the specific needs and requirements of the application. It is important to carefully evaluate the options before making a decision to ensure that the chosen tool holder meets the needs of the machining operation.

By choosing us for your tool holder needs, you can rest assured that you’re getting the best possible product at an affordable price. Our team of experts is always on hand to help you select the right tool holder for your specific needs and answer any questions you may have. Plus, we offer fast and efficient shipping so you can get started on your project as soon as possible.

Don’t wait any longer to upgrade your CNC machining process with our BMT and VDI tool holders. Contact us today to place your order and experience the difference for yourself!

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