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Tool Balancer

Tool Studio Balancing Application



By performing design-time analysis the process of producing, then measuring proto-types can be vastly shortened.


Balanced tools have longer lifetimes, produce better quality surfaces and reduce wear on milling machines.


Asymmetrical tools perform better in high-speed machining applications, up until the point the unbalance forces become significant, Being balanced allows the tool to be pushed to higher speeds.



Seamlessly integrated with Tool Studio, Balancing can be used to design new tools or to adjust to changing setup parameters such as wheel diameters etc.


Submit your IDN (grinding program) to and get it perfectly balanced to the required grade G2.5 or G6.3 next working day.


Submit your WWM IDN to and receive IDN balanced by the means of Balancing Neck operation also next working day

Asymmetric cutting tools such as unequally indexed end mills have many desirable properties. But they pose certain disadvantages at high rpm. An unbalance force develops and leads to chatter vibrations, gouging, loss of part accuracy, uneven wear of the cutting tool and excessive load on machine bearings.

“The tool is balanced while keeping the original geometry intact”

Tool Balancer resolves these problems. The tool is automatically varied until it is balanced. Key aspects of the tool’s geometry (unequal indexing/helix) are preserved. For instance, the flute length at the back can be changed without affecting the rest of the tool.

Tool Balancer has two main functions: Mass Analysis and Automated Balancing.

Tool  Balancing Image

Unbalance Analysis

The first step in the analysis calculates the center of mass. The precisely simulated solid model of the tool is used to determine its contained volume. From the contained volume, and assuming uniform density the theoretical position of centre of mass is calculated and expressed in axial offset and radial orientation. Further, the amount of unbalance force at the given rpm is evaluated.

This analysis is non-intrusive and will not change any of the tool’s parameters; it simply evaluates the tool’s suitability for high speed machining.

Automated Balancing

As opposed to Unbalance Analysis, Balancing adjusts the tool so that it is perfectly balanced. This feature automatically varies a set of parameters in order to reduce the misbalance to zero.

By selecting a balancing strategy, the user forms combinations of varied parameters that will most likely lead to a balanced tool. For example, the user may choose per-flute flute length or per-flute core diameters as a means to influence the center mass of the tool. While Tool Balancer supplies some pre-configured strategies, it also allows the user to select an arbitrary set of parameters in order to achieve the desired result.

Once started, the automated balancing process will calculate values for the group of parameters such that the amount of misbalance force is minimized.


Sample Analysis


Practical example would be a three-flute, unequally indexed end mill. This tool (ø10mm, length 30mm) rotating at 30,000 RPM will produce an unbalance force of about 3 kg.

The user selects flute length extension as the strategy and starts calculation. The software automatically suggests precise corrections eliminating the tool asymmetry .

“For a tool rotating at 30,000 rpm the unbalance force is reduced from 3kg to only 4g with a few clicks"

Balancing results only minimal change to the tool’s geometry.

Tool unbalance due to unequally indexed flute


Extra grinding length required to balance tool