The Hydrokompenser is the original automatic balance system, designed for high-speed applications. The system is now manufactured in the U.S.

Individual grinding wheels or grinding wheel assemblies can be balanced fully automatically, and under operational conditions, with high reliability and accuracy. Our new SB-5500 control is now a part of the Hydrokompenser system, allowing even greater speed, accuracy and ease of use. This is the same control system used by our SBS mechanical balancer product line, so users of both systems can now standardize on one interface, and even configure the control to operate both types of balancers from one unit. With the standard CNC interface, the system can be connected with any machine controller.

System Principles

The Hydrokompenser system uses machine coolant, water, or other available fluids to perform balancing. A four-chamber balance container is integrated into the wheel carrier or flange of the rotating grinding wheel to allow for injection of the correction medium. To achieve balance, a compensation counterweight is produced by addition of fluid to the chambered container that offsets the imbalance of the wheel assembly.

Magnitude and location of the imbalance are determined by a special measurement technique, using the systems rpm sensor and vibration sensor as inputs. The control unit processes this information to monitor the balance condition of the machine, and to control the balancing operation. The balance correction fluid is supplied via four injection nozzles to the four respective correction chambers. The delivery of fluid required for proper balancing is controlled by solenoid valves (fig. 2).

The system has a capacity for mass correction of imbalance ranges from 5 to 50,000 g•cm. Any requirements can be met by design of the balance containers. The four chambered container can be designed into the machine wheel carrier by an OEM or rebuilder, or can be bolted on as an addition to an existing machine.

The balance containers are available in open or closed design. Storage of the fluid balance medium in a closed design allows the machine to retain balance at shutdown, while the open system offers economic advantages for production machines.

The balance container is not subjected to wear and requires very minimal maintenance. Calculation of pre-balance is also a feature offered by the system. The computer control allows the user to easily and quickly add or position mechanical balance weights on the grinder, to roughly balance the wheel, and then rely on the hydro system for fine balancing.