Measuring systems for unbalance measurement and rotor analysis

Precise measuring systems for unbalance testing, rotor analysis and rotor balancing

The Hofmann measuring systems for unbalance measurement and rotor analysis provide a precise interface between the operator and the balancing machine. They reliably record the signals from the measuring mechanism, evaluate them with high precision and calculate the optimum unbalance correction. This ensures consistently high quality in production and extends the service life of your rotors.

Our measuring systems can be used flexibly. They support both manually operated universal balancing machines for one-off production and fully automatic systems in series production. The intuitive user interface allows measurement results to be interpreted quickly and measures to be derived directly. With extensive analysis functions, clear graphics and automated test sequences, Hofmann measuring systems increase the efficiency of your production processes and minimize downtimes.

Benefit from the combination of state-of-the-art sensor technology, precise evaluation and simple operation for exact unbalance measurements, fast adjustments and the highest quality in your rotor production.

Rotor types

Automotive transmissions Brake disks Brake drums Steam turbines Dental tools Torque converter Electric anchor Electric motors Flanges Flexplates Aircraft engines Aircraft tires and wheels Forestry & agricultural rotors Gas turbines Generators Hybrid runner Industrial gearboxes Clutches Crankshafts Fans and ventilators Motor cooling units Paper and print rollers Connecting rod Pumps and compressors Wheels and rims Pulleys disk-shaped rotors Grinding wheels Flywheels Separators and centrifuges Spindles Turbo generators Turbo compressors Turbocharger Train wheels and wheelsets

Industries

Automotive Energy Aviation Process industry Rail vehicles Machine tools

Measuring systems for unbalance measurement and rotor analysis

Extensive interfaces for machine control, peripheral devices and data management

Specific measuring systems for balancing and spinning

The Hofmann unbalance measuring systems combine high-quality measuring hardware with powerful PC software on an industrial PC and can be used flexibly on a wide variety of balancing machines. They are suitable for modernizing older Hofmann systems as well as those from other manufacturers. The measuring hardware records precise signals from speed sensors and transducers so that all relevant data for an exact unbalance calculation is available.

All settings for the balancing task can be made intuitively using the PC software. It supports the measurement and control of the unbalance correction with clear displays. Adjustment dialogs ensure that single and two-plane balancing machines measure correctly, even with elastic rotors. Balancing results can be logged, stored in databases and statistically analyzed. A data backup function enables the system to be restored to a defined state.

Variants

Unbalance measuring system

Measuring system for low- and high-speed balancing of elastic rotors

Quasar spin

Unbalance measuring system

Type MC10

The MC10 unbalance measuring system from Hofmann enables precise measurement and analysis of unbalances on all types of rotors. Thanks to intuitive touchscreen operation, measurement results can be read off easily, both as numerical values and in the polar diagram. The system supports one or two correction levels and records static, dynamic or torque unbalances in mass, unbalance or correction units. Rotation indicators help to quickly locate the unbalance angles, while automatic tolerance comparisons and special calibration procedures for elastic rotors increase accuracy.

The MC10 system is suitable for horizontal and vertical balancing machines, single and two-plane machines and force or displacement measuring systems. It can control both manually operated and fully automatic machines and can be used for balancing rigid and elastic rotors. Modernization of older systems or third-party products is possible without any problems. An integrated rotor and balancing database, statistical evaluations and communication interfaces enable efficient data management, logging and system diagnostics.

Special features

Simple intuitive operation
Touchscreen operation
Display of the unbalance
- as numerical values and in the polar diagram
- for one or two compensation levels
- as static unbalance, torque unbalance or dynamic unbalance
- in mass, unbalance or compensation units (e.g. mm drilling depth)
Rotation indicator for quick and precise detection of the unbalance angle position
Calculation of the permissible residual unbalance, e.g. according to ISO 21940-11
Automatic tolerance comparison
Functions for the compensation or retention of imbalances
Special calibration procedures, e.g. for elastic rotor behavior
Display of measured values with variable rotor speed (tracking)
Balancing protocol
Rotor and balancing database
Statistical data analysis
Communication, signal and data interfaces
System diagnostics function
System backup

Field of application

Measuring the unbalance on
- horizontal and vertical balancing machines
- Single and two-plane balancing machines
- force- and distance-measuring balancing machines
- manually operated and fully automatic balancing machines
Balancing of rigid and flexible rotors
Operation of an unbalance measuring system on several balancing machines
Modernization of all types of balancing machines, including those from other manufacturers

Measuring system for low- and high-speed balancing of elastic rotors

Type Quasar 2

Quasar 2 is a state-of-the-art measuring system for the economical and precise balancing of elastic rotors. It combines low-speed and high-speed balancing in one system and thus enables flexible, efficient rotor machining. The unbalance can already be distributed to several levels in the rigid state, which reduces modal unbalance and minimizes the effort involved.

The system works with standard measuring hardware, records unbalance as well as process values such as pressure and temperature and displays them clearly. The software supports offline operation, data import from other systems and extensive analysis and logging functions. An optional training module simulates rotor behavior so that operators can learn how to use the system without risk.

Quasar 2 is suitable for high-speed balancing systems from Hofmann and for retrofitting existing systems. It is ideal for rotors from turbomachinery and high-speed rotors, saves time, reduces errors and delivers precise, reproducible results.

Special features

One software for low- and high-speed balancing
Balancing modal and with influence coefficients
Recording of vibrations and process values
Runout measurement and compensation
Extensive display, analysis and logging options
Additional functions for testing rotors from electrical machines (options)
Offline software for preparation and post-processing of balancing projects (optional)
Data interfaces to other known measuring systems (option)
Training module with "virtual" balancing system for generating measured values (optional)
Use of standard measurement hardware for high availability
Standardized documentation - regardless of where a rotor is manufactured, repaired or tested
Save time and avoid errors by eliminating data entry in another system

Field of application

High-speed balancing of elastic rotors from turbomachinery and other high-speed rotors
- in high-speed balancing systems
- in operation

Quasar spin

The right measuring system for Hofmann spin-drying solutions

The specially developed measuring software for vertical spin stands offers a comprehensive solution for the precise measurement, analysis and balancing of rotors. Thanks to an integrated rotor database, different rotor types can be efficiently managed and called up at any time, allowing the software to be optimally integrated into a wide range of testing and production environments.

With its ability to balance flexible rotors in several planes and at different speeds using influence coefficients, the software offers maximum flexibility and accuracy. The display of measured values in run-up or run-down (tracking) as well as in continuous mode for long-term measurements enables detailed analysis under realistic operating conditions.

A variety of display formats are available for evaluation: Measured values can be displayed directly in vibration units and visualized in Bode or polar diagrams. The software also offers functions for signal analysis, shaft vibration measurement including run-out compensation and integrated logging software for complete documentation of all test results.

Special features

Use of commercially available data acquisition modules with high availability and the option of connecting a large number of different measurement sensors
Short start-up times and optimum utilization of PC computing power
Fast data processing through the use of efficient computing algorithms
Easy creation and customization of different measurement configurations and measurement surfaces
Easy creation of extensive protocols with freely configurable layouts
Simple integration of customer sensors
Acquisition of dynamic (time-varying) and static (process data) measured values
Extensive analysis options (sum oscillation, 1f, 2f, frequency analysis, waterfall, oscilloscope function, expansion measurement, etc.)
Display of measured values over speed or time, in x-y, polar, bar charts, tables, etc.
Archiving of measured values as raw data; subsequent analysis of measured values is therefore always possible after successful measurement
Evaluation of the measurement data to detect rotor breakage at an early stage
Graphical representation of the influence vectors
Effective unbalance correction through optimization algorithms for balancing with the aim of reducing vibrations