The »toolBalancer« is so exceptionally accurate because of the offset in the center during measurement. This advantage applies to every tool—but especially to smaller high-speed cutting tools.

Yes, you can. What makes the »toolBalancer« spindle unique is its versatility. You can use both ZOLLER balancing adapters and adapters from other manufacturers in the spindle.

Ease of maintenance is the key difference compared to other balancing machines on the market. Starting with the »toolBalancer«’s »twinPanel« safety cover. If a part breaks off during balancing or the panel deteriorates due to contact with oil, there’s no need to replace the entire cover right away. The cover consists of two panels, so you can replace just the inner panel. That is why we call it the “sacrificial disc.” Furthermore, you have easy access to the spindle, and all electronic components are carefully and securely installed in the control cabinet to ensure trouble-free operation. The positioning of the control cabinet, drives, and sensors ensures optimal accessibility for maintenance and service work.

The »toolBalancer« is a new product featuring state-of-the-art technology and an improved, more ergonomic design. This results in high precision, ease of use, and certified safety.

At ZOLLER, we offer a range of options to help you learn more about a product in a way that suits your needs. For example, you can schedule a one-on-one consultation with an expert in our virtual showroom. We’d also be happy to discuss your needs via Microsoft Teams or over the phone. Or you can visit our Smart Factory.

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A balanced tool assembly ensures longer tool life, reduced vibration, higher spindle speed, better surface finish on parts, and, above all, a longer spindle life.

Imbalance in a tool assembly generates excessive centrifugal forces that can damage the spindle bearings. Such damage reduces the spindle’s service life and can lead to costly unplanned downtime.

Cutting tools are sometimes asymmetrical, for example, due to flattened sections on the shank (Weldon face). Profile cutting tools may have an asymmetrical weight distribution. When such cutting tools are mounted in a balanced toolholder, this results in an imbalance in the tool assembly. Collets, clamping nuts, stop screws, data chips, etc., also contribute to the imbalance of the tool assembly. Once these other components are added to the toolholder assembly, the toolholder may need to be rebalanced to meet ISO balancing specifications.

ZOLLER offers special adapters for clamping drill-milling cutters and tools with different shank sizes.

The following rule of thumb can serve as a guide to determine whether the tool holder should be balanced "statically" or "dynamically":

Static: 1 Balancing in the plane applies to tool holders with an operating speed of less than 20,000 rpm and where the total length of the holder is less than twice the maximum diameter of the tool holder.

Dynamic: 2 Dynamic balancing applies to tool holders with an operating speed of more than 20,000 rpm, or when the total length of the holder is more than twice the maximum diameter of the tool holder.

G denotes the balance grade. CNC machines, machine tool drives, and the tool industry use G2.5 for finishing tools, G6.3 for roughing tools, and G1 for grinding wheels.

These are the quality grades according to DIN ISO 1940-1.

In balancing technology, there are three methods for correcting imbalance: 

Adding material using a screw-in method.
Removing material by drilling or milling. Shifting
material using balancing rings.

If the spindle is running at only 2,000 RPM due to vibrations and cutting noise, this is because an unbalanced tool setup is being used. When the tools are balanced, higher spindle speeds and feed rates can be used, thereby increasing profitability.

This is the unit used to measure imbalance. Imbalance is caused by a rotating mass located outside the axis of rotation. Imbalance is expressed as the product of this mass and the distance from the axis of rotation, e.g., in gram-millimeters (gmm) or kilogram-meters (kgm).