Products and solutions
Three strong units
At Hofmann, we bundle our expertise into three strong units:
Balancing technology, vibration analysis and high speed.Â
Each unit combines expert knowledge, state-of-the-art technology and practical solutions for maximum precision. This is how we create a globally unique service portfolio for our customers. From consulting to development and implementation, we support you in all tasks relating to balancing, testing and optimizing your machines and rotors.
Our units work hand in hand to improve processes, make machines more durable and enable top performance in every production process. Rely on solutions that are precisely tailored to your requirements.
From standard machines to special solutions
Find your customized balancing system
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Software
Measuring systems for unbalance measurement and rotor analysis
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.
Unbalance measuring system
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.
Measuring system for low- and high-speed balancing of elastic rotors
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.
Quasar spin
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 solutions
High-speed balancing systems
Steam and gas turbines, turbo generators and turbo compressors are machines that have rotors that often run supercritically and, as flexible rotors, need to be balanced at high speed. The high-speed balancing and centrifugal systems of type HS from Hofmann meet all requirements for the precise balancing of flexible rotors in several planes and at different speeds.
Flexible machine concepts, for example for drive systems and safety structures, enable Hofmann to customize each high-speed balancing and centrifugal system to meet individual project requirements. Thanks to these turn-key solutions, customers can rely on high-precision, customized systems for demanding high-speed applications.
Low and high-speed balancing and centrifugal system
The high-speed HS balancing and spin testing systems from Hofmann were developed to precisely balance elastic rotors under near-operational storage conditions and to carry out spin tests. The systems cover rotor weights from a few kilograms up to 100 tons and offer flexible concepts for a wide range of project requirements.
Measuring system for low- and high-speed balancing of elastic rotors
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 solutions
Balancing machines for rail vehicles
Hofmann balancing machines for rail vehicles are designed to meet the exact individual requirements of our customers. They can be operated as pure unbalance measuring machines, which offer maximum precision in the detection and analysis of unbalances, as well as in combination with a specially developed milling machine, which enables correction directly on site.
Thanks to state-of-the-art measurement technology and flexible software solutions, a wide variety of components such as wheelsets, drive shafts and axles can be reliably and reproducibly balanced. The machines impress with high process reliability, ease of operation and a robust design that can withstand the high demands of rail traffic. Expansion options, such as for the automation of measuring and balancing processes, ensure even more efficient integration into existing production or maintenance processes.
1-plane measuring and balancing machine for railroad brake disks
The BVW32 is a versatile single-plane measuring and balancing machine for railroad brake disks, which can be used both as a pure unbalance measuring machine and as a combined solution with integrated unbalance correction. In the combined version, the workpiece is turned to the calculated correction angle after the unbalance has been precisely determined. Thanks to a specially developed chuck, the unbalance can be corrected immediately by radial milling. Loading is flexible: manually by crane or fully automatically by robot or loading gantry.
The machine impresses with its compact, robust design and high flexibility. It is designed for workpieces with external diameters of 300 to 1,200 mm and offers maximum ease of changeover for different types of brake discs. State-of-the-art torque technology, central media supply and optimum access for loading and unloading ensure efficient processes. The basic equipment includes a Siemens PLC; CAQ and master computer connection as well as remote maintenance are available as options
1-level measuring and balancing machine for railroad wheels
The BVW13 is a powerful single-level measuring and balancing machine for railroad wheels. It can be used both as a pure unbalance measuring machine, in which the unbalance is removed via a separate processing station, and as a combined solution, in which measurement and correction take place in one station. In the combined version, the wheel is turned to the calculated correction angle after precise unbalance measurement. The correction is then carried out using a specially developed chuck.
The machine can be loaded flexibly, either manually by crane or automatically with a robot or loading gantry. The machine concept is designed for maximum efficiency, precision and ergonomics and meets the highest requirements for series production and safety.
1-plane measuring and balancing machine for railroad sprockets
The BVW13 is a precise single-plane measuring and balancing machine, specially developed for the machining of railroad ring gears. It can be used both as a pure unbalance measuring machine, in which the unbalance is corrected via a separate machining station, and as a combined solution, in which measurement and correction take place directly in one station. In the combined machine concept, the workpiece is turned to the calculated correction angle after the unbalance has been precisely determined. The unbalance is then corrected using a specially designed chuck that guarantees maximum precision.
The machine can be loaded flexibly, either manually by crane or automatically by robot or loading gantry. The machine concept is designed for maximum precision, efficiency and ergonomics and meets the high demands of series production of sprockets for rail vehicles.
2-plane measuring machine for railroad wheelsets
The H-24 is a powerful 2-plane measuring machine, specially developed for the precise determination of the unbalance of railroad wheelsets. It enables precise measurement in two planes and can be operated with belt drive or cardan shaft drive, depending on customer requirements. This allows different workpiece geometries and production requirements to be optimally mapped.
For external unbalance correction, the calculated correction parameters such as the milling track per correction plane can be transferred directly to the processing machine via a defined interface. This enables seamless integration into existing production processes. Loading is flexible, either manually by crane or fully automatically by robot or loading gantry.
Centrifugal solutions
Spin stand for electric anchor
For the development, prototype testing, quality assurance and series production of electric armature rotors, the spinning of the components in the operating speed range is crucial. High speeds can cause subsequent displacement, settling or material deformation, which can lead to changes in imbalance and thus to a loss of performance or increased wear. Spin stands for electric armatures enable these effects to be detected at an early stage, the rotors to be tested precisely and the balancing results to be optimally controlled.
Our centrifugal solutions are specially designed for the high demands of electromobility and support engineers in analyzing rotor vibrations, strength limits and dynamic behaviour. This not only increases the operational safety of the rotors, but also significantly boosts efficiency in production and development. The use of such spin test rigs allows prototypes, small series and series products to be tested reliably, corrections to be made before series production and the service life of the rotors to be secured in the long term.
Vertical spin stand
The Hofmann ESV25-AR vertical spinning stand has been specially developed for the precise spinning of electric motors in large-scale production. A central component of the spinning process is bringing the rotors up to their subsequent operating speed in the vehicle. This so-called spinning often causes a shift in the mass of the laminations in the rotor, for example, which can lead to a change in the imbalance. Due to the low tolerances of electric rotors, a spinning process is essential to ensure optimum rotor balance, durability and operational reliability of the components.
The Hofmann spin test stands are available in a vertical design and offer maximum flexibility in loading, which can be carried out both manually and automatically using robots. Thanks to the precise control and high spin speeds, prototypes, small batches and series production can be tested efficiently and reproducibly.
Thanks to its compact design, robust construction and high-precision direct drive, the ESV25-AR is ideal for the production and quality assurance of electric rotors where maximum accuracy and safety are required.
eSpin spin stands
Spin stands are indispensable for the development, prototype testing, quality assurance and production of rotors. They enable the precise investigation of the vibration behavior and load-bearing capacity of rotating components under realistic centrifugal forces. They provide crucial insights into limits, stability and material behavior, particularly for the research and development of new rotors.
Our partners - deinMaschine
The high-performance spin stands in the eSpin series are supplied by our partner company yourmachine distributed. This gives you direct access to individually configurable, high-precision centrifugal solutions for a wide range of requirements.
Contact us
Phone: +49 (0)6252 982098
info@deinemaschine.comÂ
Quasar spin
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.
Vibration monitoring
Vibration monitoring and sensors
Hofmann offers modern measuring systems and vibration sensors for vibration analysis and machine diagnostics that ensure long-term precise measurement accuracy. Together with the specialists from Ibis, a strong team is formed: Hofmann provides the expertise for balancing machines, Ibis the high-precision sensors and measuring systems.
The portfolio includes cost-effective monitoring solutions for fans, pumps, compressors, motors and spindles as well as a wide range of sensors for various industrial applications. This combination enables machine vibrations to be reliably detected, imbalances to be identified at an early stage and the service life of systems to be sustainably increased.
Hofmann vibration and speed sensors
Choosing the right transducer or sensor is crucial to the quality of a measurement. That is why Hofmann offers a wide range of sensors that are suitable for a wide variety of applications:
- Acceleration, vibration velocity and shaft vibration transducers
- Speed sensor
- Transducer for measuring relative strains
- Transducer for measuring absolute positions
Ibis vibration and speed sensors
High-quality sensors are indispensable for the precise monitoring of machine conditions and the exact analysis of rotors. Ibis sensors reliably detect bearing, housing and shaft vibrations and precisely determine rotational speeds. This allows critical operating ranges to be detected at an early stage and the service life of machine components to be optimized. This is why Ibis offers a wide range of sensors that are suitable for a wide variety of applications:
- Acceleration, vibration velocity and shaft vibration transducers
- Speed sensor
Our partners - Ibis
The high-quality sensors from Ibis together with the Hofmann measuring systems offer an optimum solution for every balancing and monitoring task. This partnership enables us to offer you high-performance sensor technology directly from a single source and ensures seamless integration into existing systems. This gives you maximum precision and efficiency for research, development and production.
Contact us
Phone: +49 (0) 6157 - 949-370
sales.vg-ibis@hofmann-global.com
www.ibis-gmbh.de
Special solutions
Balancing machine for pumps
Pump rotors are at the heart of industrial pumps and are used in a wide range of applications, from water and wastewater technology to chemical and industrial processes, energy and supply systems. To ensure that pumps in these sensitive areas operate reliably, energy-efficiently and permanently, their rotors must be precisely balanced.
Hofmann balancing machines for pumps are specially designed to meet the high demands of series production. They combine maximum measuring accuracy with automated processes so that balancing processes can be carried out not only quickly and reproducibly, but also particularly economically. Intelligent measuring systems precisely detect unbalances, calculate the optimum correction and control the correction process. The result is smooth running conditions, less wear, a longer pump service life and a significant reduction in energy consumption and operating costs.
Thanks to their modular design and flexible configuration options, the machines can be adapted to a wide range of pump sizes, rotor geometries and production requirements. Whether small quantities or high-volume series, Hofmann offers a scalable solution that can be optimally integrated into existing production processes.
1-level measuring and balancing machine for pump rotors
The vertical 1-level balancing machine type NVW B has been specially developed for the precise measurement and correction of unbalance on pump rotors in series production. As a displacement measuring system, it offers maximum accuracy and process reliability with efficient operation.
Particularly noteworthy are their flexibility and ease of conversion, which allows different pump rotors to be adapted quickly. Depending on requirements, unbalance correction is achieved by axial drilling or milling in the cover plate. This means that the NVW B works reliably, reproducibly and optimally adapted to the requirements of modern production environments.
Special solutions
Balancing machines for fans, ventilators and blowers
Our balancing machines for fans, ventilators and blowers offer flexible solutions for a wide range of applications - from automotive components to demanding industrial applications. Whether LiDAR sensors, air conditioning fans, engine cooling or battery cooling - our automotive fan solutions guarantee maximum precision, efficiency and operational reliability.
In the non-automotive sector, we also implement customized solutions for building infrastructure, data centers, heat pumps and many other areas of application. Our systems support all common control technologies such as AC, DC, PWM, LIN bus or Modbus. On request, we can also develop individual bus systems for special requirements.
Manual 1- and 2-station machines
The VHK11E machines offer precise balancing for one or two planes and combine high measuring accuracy with easy handling. Thanks to their compact design, they also fit into confined production environments. Ergonomic operation, quick set-up and flexible parameterization ensure efficient work processes, while the tandem design enables short cycle times.
Manual 1-station machine
The VHK81E machines offer precise balancing for two planes and combine high measuring accuracy with easy handling for manual or robotic loading.
Thanks to their compact design, they also fit into confined production environments. Ergonomic operation thanks to the lateral mounting of the fan assemblies with motor and thus excellent accessibility to the rotor for the operator to balance/attach the weights.
A machine extension for special applications also enables fan wheels with an auxiliary shaft to be balanced.
Automatic in-line measuring cells
The automatic in-line measuring cells enable precise balancing directly in the production line. They combine high-precision measuring systems with a compact design and seamless integration into automated assembly lines. Flexible parameterization, automatic type change and scalable modules ensure efficient processes and short cycle times, while statistical evaluations continuously optimize the process.
Manual, vertical spindle machine
The VVK11 is a precise 2-plane balancing machine for flexible production processes. It impresses with its compact design, intuitive operation and flexible clamping options. It offers optional RUN-OUT measurements and statistics packages for process optimization.
Automatic in-line vertical spindle machine
The automatic in-line vertical spindle machine is a 2-plane balancing solution for highly automated production lines. It impresses with precise measurement, flexible clamping, automatic type change and interfaces to the line control system. RUN-OUT measurements and statistics packages for process optimization are optionally available.
Special solutions
Balancing systems for aviation
The aviation industry places the highest demands on quality, reliability and safety. Our balancing systems for aviation have been specially developed for the precise balancing of aircraft engines and engine components. They ensure that a minimum vibration level is achieved even under extreme operating conditions. This increases operational efficiency and extends the service life of the engines.
All systems comply with international standards such as the SAE standards and are designed to meet the exact requirements of the aviation industry. Whether in the development of new engines or in the production of complex engine components, our solutions enable precise measurements, reliable evaluations and standard-compliant test procedures. In this way, they make a decisive contribution to safety and efficiency in aviation.
Horizontal balancing machines
The horizontal, force-measuring balancing machines for the aviation industry have been specially developed for the high-precision balancing of engine components. They comply with the SAE ARP 4048 standard and can be expanded with a wide range of options to meet all current and future aviation requirements.
Expansion options such as half-shell bearings or special software solutions enable the reliable balancing of all common rotors. Averaging over several balancing runs reduces the influence of moving blades on the measurement result. In addition, individually adapted protection concepts ensure maximum safety and a significant reduction in noise emissions thanks to integrated sound insulation.
Vertical balancing machines
The vertical, force-measuring balancing machines for the aviation industry are specially designed for the high-precision balancing of engine components without their own bearing journals. The rotors are mounted on a vertically arranged precision spindle via an adapter. With numerous expansion options and the design in accordance with SAE ARP 4050 and 5323 standards, the machines are optimally equipped for current and future requirements in the aviation industry.
Automatic measurement sequences and specially developed software solutions ensure that rotors are balanced reliably and precisely. The averaging of several balancing runs reduces the influence of moving blades on the measurement result. Flexible protection concepts ensure maximum safety and at the same time provide ergonomic access to the spindle and rotor holder.
Torque scales
Hofmann torque scales for the aviation industry enable the high-precision determination of the center of mass of engine blades in one or three axes. Designed in accordance with the relevant SAE ARP standards and with numerous expansion options, they are optimally adapted to the current and future requirements of the aviation industry.
Thanks to the force measuring principle, the torque scales are permanently calibrated and insensitive to temperature fluctuations. The friction-free and backlash-free bearing of the measuring arms guarantees wear-free and highly precise measurements, regardless of the component weight. As an option, the BLADES software supports the sorting of the engine blades and ensures uniform unbalance distribution, which improves the efficiency and service life of the components.
High-speed balancing machines
The Hofmann balancing machines R-50.1HS and R-150.1HS are specially designed for high-speed balancing of drive shafts from aircraft engines and aircraft drive systems. They enable precise measurements even on components that exhibit elastic behavior and ensure compliance with the highest quality requirements.
With these machines, the drive shafts can be safely balanced up to their actual operating speed and checked for concentricity. This reduces vibrations, increases efficiency and extends the service life of the engine components. Thanks to their robust design and optional software solutions, the R-50.1HS and R-150.1HS are perfectly suited to the demanding requirements of the aviation industry.
Special solutions
The innovative Hofmann balancing cells combine one or more balancing machines with a machine tool to create a fully automatic system. The rotor unbalance determined on the balancing machine is transferred directly to the machine tool's control system so that the unbalance is corrected automatically.
This solution enables high-precision balancing of components with complex geometries, special materials or demanding machining processes. At the same time, the influence of the operator is significantly reduced, ensuring reproducible results, maximum efficiency and the highest quality in production.
Special solutions
Vertical balancing machine for disk-shaped rotors
Hofmann's V-Line machines enable the precise balancing of a wide variety of rotors, including brake discs, brake drums, turbines, gear parts and electric armatures. The rotors are clamped backlash-free over an internal diameter to ensure maximum measuring accuracy.
Thanks to the modular design, the vertical unbalance measuring and balancing machines can be flexibly adapted to different rotors and production requirements. Both displacement and force-measuring versions are possible, which guarantees maximum process reliability, efficiency and availability.
1-station machine
The 1-station V-Line machine enables fast and flexible balancing of rotors in just approx. 60 seconds. It is universally applicable, modularly expandable and optionally available with robot loading and automatic calibration system. Robust design, modern controls and direct access to all spare parts ensure maximum process stability.
2-station machine
The 2-station V-Line machine is ideal for in-line balancing with a cycle time of approx. 30 seconds. It is modularly expandable, compact in design and supports automatic calibration as well as optional conveyor belt infeed and outfeed. Robust construction and direct access to spare parts ensure maximum process reliability.
4-station machine
The 4-station V-Line machine enables in-line balancing with a cycle time of approx. 15 seconds. It is modularly expandable, compact and offers an automatic calibration system, conveyor belt infeed and outfeed as well as a robust design for maximum process reliability.
Special solutions
Machine for taring connecting rods
Hofmann's taring systems for connecting rods stand for high precision and efficiency in series production. Thanks to their modular design, they can be flexibly adapted to production requirements and loaded manually or automatically via a loading gantry or robot. The machines reliably determine the gravity axis of cast or forged blanks, reduce the input unbalance and thus shorten cycle times. The result is an efficient balancing process with maximum process reliability and consistent production quality.
Taring of connecting rod
The Hofmann machine for taring connecting rod type PHW enables precise weighing and balancing of both connecting rod eyes in a single work step. Depending on the equipment, deburring and brushing are also possible, so that even high cycle times can be efficiently maintained.
Special features include integrated connecting rod eye measurement, modern weighing technology, NC-controlled axes, milling and brushing stations and a complete enclosure for low noise levels. The machine is ideal for the large-scale production of connecting rods for the automotive industry and suppliers.
Special solutions
Horizontal balancing machine for crankshafts
Hofmann's horizontal balancing machines have been specially developed for the reliable balancing of symmetrical and asymmetrical crankshafts. They combine maximum precision with flexible operation and safe handling. Whether manual loading or automated processes with a loading gantry or robot, the machines adapt efficiently to your production requirements. State-of-the-art sensor technology and precise evaluation software enable imbalances to be detected and corrected quickly and reliably. Discover the right variants for your range of rotors and optimize the quality, performance and durability of your crankshafts in the long term.
Crankshafts
The KHK21 from Hofmann has a modular design, can be flexibly adapted to production conditions and is usually loaded via a loading gantry. It enables the precise balancing of crankshafts in several balancing planes in one or more machining steps. Maintenance-free vibration sensors, precise drilling depth control, tool breakage and wear monitoring as well as minimum quantity lubrication ensure reliable and safe processes. The machine is suitable for small car up to large truck crankshafts in symmetrical or asymmetrical design and can be operated as a 1-station machine with combined measuring and correction unit or as a 2-station machine.
In-line and V-crankshafts
The 1-station balancing machines UHK 12, 16 and 19 have sliding protection or a protective fence and combine precise measurement with efficient unbalance correction. The measuring system works with a frequency-controlled belt drive, maintenance-free measuring sensors and axially adjustable bearing pedestals with hardened measuring rollers. A drilling spindle performs the unbalance correction via manual or automatic feed, supported by line lasers for exact positioning. Operation and evaluation are carried out conveniently via a 19-inch touchscreen, while integrated software, tool management and chip extraction make operation economical and low-maintenance. Suitable for the final balancing of small car to large truck crankshafts in symmetrical and asymmetrical designs with mounted ring weights.
Geometric centering of crankshafts
The UHK 12-ZM1 from Hofmann is a 1-station balancing machine with machine casing and force-measuring, permanently calibrated measuring system. It enables the quick geometric centering of raw or finished crankshafts and impresses with its maintenance-free, wear-free bearing pedestals and simple adjustment in T-slots with locking. New rotor types can be set up quickly, the measuring drive is via a belt drive with asynchronous motor on horizontally adjustable linear guides. Operation is intuitive via a 19-inch touchscreen, correction values are output directly for subsequent machining, while the "Posiquick C" angular rotation display ensures the exact transfer of the compensation position. The compact design is suitable for individual and series production as well as for the maintenance and development of small to medium-sized crankshafts in symmetrical or asymmetrical designs.
Mass centering of crankshafts
The ZHK21-AL1 1-station measuring machine from Hofmann has been specially developed for the precise mass centering of crankshafts. It is equipped with maintenance-free encoders, servo drives for axial and radial alignment and a lockable measuring frame. Thanks to linearly adjustable pre-storage, support prisms and clamping levers, a high level of accuracy is achieved when holding and fixing the components. The integrated 19″ touchscreen enables convenient operation, while the measured coordinates are transmitted directly to the downstream machining process.
Large crankshaft
The UHK27-BM1 from Hofmann is a semi-automated 1-station balancing machine with drilling protal and force-measuring, permanently calibrated measuring system.
It allows the measuring and balancing of large crankshafts up to 16,000 kg and impresses with its maintenance-free, wear-free bearing pedestals and simple adjustment in T-slots with locking mechanism.
New rotor types can be set up quickly, the measuring drive is carried out via a cardan shaft drive with synchronous motor on horizontally adjustable linear guides. Operation is intuitive via a 19-inch touchscreen, correction values are transmitted directly to the on-board gantry so that the large crankshaft is automatically balanced to tolerance. The minimum quantity lubrication ensures a reliable and safe drilling process. Precise drilling depth control and the detection of tool breakage or wear are realized via an integrated gate detection system.
Special solutions
Balancing machine for electric armatures and hybrid rotors
Hofmann's balancing machines for electric armatures and hybrid rotors offer maximum precision, flexibility and safety. The machines can be loaded manually or automatically via a loading gantry or robot and are specially designed for the requirements of e-mobility.
Thanks to precise measuring platforms and devices, the systems meet the high demands resulting from the high speeds and rotor weight, even with very low unbalance tolerances.
Discover our specially developed variants for your individual range of rotors and optimize the performance of your electric motors.
2-plane measuring and balancing machine
For the precise balancing of electric armatures and hybrid rotors in e-mobility, Hofmann offers flexible machine concepts that meet the high requirements for measuring accuracy with low unbalance tolerances and high speeds.
Depending on requirements, different machine concepts are available, from the manual 1-station machine, where measuring and balancing take place in one station, to the fully automatic 2-station machine, which enables measuring and balancing to take place separately in two stations. Depending on the rotor type, unbalance correction is carried out axially or radially by drilling or alternatively by riveting weights. The choice of stations and set-up depends on the cycle time and machine concept. All components can be individually combined to ensure maximum flexibility.
Loading can be done manually or automatically using robots or a loading gantry.
2-plane measuring and balancing machine with drilling unit
For the precise balancing of electric armatures in e-mobility, Hofmann offers flexible machine concepts that meet the high requirements for measuring accuracy with low unbalance tolerances and high speeds.
Depending on requirements, different machine concepts are available, from the manual 1-station machine, where measuring and balancing take place in one station, to the fully automatic 2-station machine, which enables measuring and balancing to take place separately in two stations. Depending on the rotor type, unbalance correction is carried out axially or radially via drilling. The choice of stations and set-up depends on the cycle time and machine concept. All components can be combined individually to ensure maximum flexibility.
Loading can be done manually or automatically using robots or a loading gantry.
1-level measuring and balancing machine for hybrid rotors
Various machine concepts are available for machining hybrid rotors. The fully automatic 1-station machine enables the unbalance to be measured and corrected directly in the same station. For higher production requirements, Hofmann also offers fully automatic 4-station machines. The decision on the number and design of the stations depends on the cycle time requirement and the selected machine concept.
2-plane measuring and balancing machine for gear components of the E-axis
A machine with maximum balancing accuracy has been developed for the machining of electric axis gears. Unbalance correction is carried out either via axial or radial drilling. Radial drilling is realized via a 90° angle drilling head, which is inserted into the spindle nose of the drilling spindle via the HSK interface.
Special solutions
Concentricity testing systems for rotors
The Hofmann concentricity testing systems from Type CLOCK enable high-precision concentricity and axial runout measurements of rotors, for example mounted in prisms. Total, mechanical and electrical runout measurements are covered. The systems guarantee maximum accuracy in measurement and ensure the functionality of turbomachinery. Deviations can be detected at an early stage, which optimizes production processes and significantly increases the service life and operational reliability of the machines.
For flexible use on site, the portable runout test system offers RO 7000 fast and reliable measurement results. The mobile testing devices enable high measuring accuracy and therefore reduced production costs and help to optimize production processes in the long term.
Portable concentricity/runout test system
Concentricity and axial run-out are decisive parameters for the precision of rotating shafts and cylindrical components. Deviations from the ideal circular shape or plane are checked both during production and during repairs. With the RO 7000 portable concentricity and runout testing system, precise concentricity and axial runout measurements can be carried out on rotors, shafts and other cylindrical components in several planes. The rotor can be mounted in a lathe, on rollers or in prisms and can be driven manually or by motor. The system consists of high-quality measuring hardware for PC connection, a precise sensor set and the specialized concentricity measuring software "Orbistar".
Orbistar software - precise data acquisition and evaluation
The "Orbistar" concentricity measurement software supports the input of all measurement parameters, reliably records the measured values and creates complete protocols. At the same time, the software compensates for systematic influences caused by axial movements of the rotor. Special evaluation methods and the use of reference sensors ensure that the concentricity and axial run-out results are comparable and reproducible across different measuring systems.
Measurement of radial and axial run-out
The actual concentricity and axial run-out measurement is carried out using high-precision distance sensors, which are supplied with brackets for commercially available magnetic stands. The angular position of the rotor is recorded via an encoder, which is driven by the rotor itself via a friction wheel, or alternatively via a speed sensor.
Integrated runout measurement
A decisive advantage of the RO 7000 is the simultaneous measurement of the electrical runout together with the mechanical concentricity deviations. Tactile sensors are used for the mechanical runout and eddy current sensors for the total runout. The electrical runout, the difference between total and mechanical runout, indicates the systematic measurement error of an eddy current sensor. This measured value is particularly important for the inspection of measurement tracks used for shaft vibration analyses and rotor tests.
The RO 7000 concentricity and runout testing system is therefore an indispensable tool for precise rotor testing, axial runout measurements and quality assurance of rotating components in production, maintenance and repair.
Horizontal concentricity/runout testing machine
The Hofmann concentricity and runout testing machine type UHR enables precise measurements of concentricity and axial runout on rotors in several axial planes. For the measurement, the rotor is mounted in prisms and driven evenly and smoothly via a cardan shaft. The high-precision concentricity sensors are mounted on a movable measuring stand that is positioned along the rotor axis. The sensors can be adjusted radially to the respective rotor diameter and record the concentricity deviations at an optimum angle. The signals from the sensors and an encoder, which is connected to the drive, are recorded and processed by the powerful Orbistar concentricity measurement software.
Orbistar software - precise measurement data acquisition and evaluation
The Orbistar software supports the input of concentricity measurement tasks, records the data in real time, visualizes the results and creates detailed reports. Systematic measurement errors of prismatic bearings are automatically compensated. Reference sensors also ensure that axis movements of the shaft are correctly taken into account. The actual values obtained in this way can be reliably compared with the specifications so that any necessary corrections can be implemented precisely.
Runout measurement included
A special feature of Orbistar is the simultaneous measurement of the electrical runout. Mechanical runout (with tactile sensors) and total runout (with eddy current sensors) are measured simultaneously. The electrical runout is the difference between the total and mechanical runout and indicates the systematic measurement error of the eddy current transducer. This value is particularly relevant for checking measurement traces that are used for wave vibration measurements.
The horizontal concentricity and runout testing machine type UHR is therefore ideal for precise rotor testing, quality assurance and optimization of production processes as well as for use in maintenance and repair.
Portable devices
Portable devices for measuring and balancing
Hofmann's portable devices enable high-precision measurement and analysis of vibrations directly during operation. They provide reliable data for a quick and targeted assessment of machine conditions and help to efficiently correct imbalances. Thanks to their intuitive operation and simple handling, they are easy to learn and immediately ready for use. This ensures the long-term performance of your machines and increases process reliability in day-to-day operations.
Multifunctional vibration meter
The MachineControl MC 1100 from Hofmann combines five measuring functions in one compact, robust device and is ideal for preventive maintenance and condition monitoring. It records the effective vibration velocity Veff, vibration acceleration and the condition of rolling bearings (gSP) using the shock pulse method. The integrated speed sensor reliably measures the machine speed, while temperature and belt frequency can be recorded as an option. The MC 1100 helps to detect critical operating states at an early stage, minimize downtimes and increase the service life of systems.
Electronic grinding wheel balancer
The EasyBalancer EB 3500 from Hofmann is a powerful vibration measuring and balancing device that has been specially developed for grinding wheels and grinding spindles. It enables precise balancing directly during machine operation and thus significantly reduces downtimes. The handy, portable design ensures flexible use on different machines, while the intuitive user interface guarantees fast and reliable measurements. With the EasyBalancer EB 3500, vibrations can be efficiently recorded, imbalances can be corrected in a targeted manner and the service life of grinding wheels and spindles can be significantly extended.
Operating balance and vibration measuring device
The Minibalancer MI 2500 from Hofmann is a compact operational balancing and vibration measuring device for use directly during machine operation. With a high-resolution touchscreen and simple operation, it enables fast and precise optimization, from measuring the total and unbalance vibration to analysing the condition of the rolling bearings. Measurement results can be transferred to a PC via USB and logged individually. The MI 2500 thus supports technicians in evaluating machine condition, resonance analyses and optimizing operating dynamics.
Vibration analysis and operational balancing device
The VibroLyzer VL 8000 is the high-end operational balancing device for precise balancing in one or two planes. It combines vibration measurement, vibration analysis and machine diagnostics in one device and covers speeds up to 300,000 rpm. Total and unbalance vibrations, spectral components, resonances and damage to rolling bearings or gears can be recorded directly on site. Measurement results are clearly displayed, transmitted via USB and individually logged, enabling efficient operational balancing and precise machine diagnostics.
Active balancing systems
Automatically integrated balancing solutions
Active balancing means measuring vibrations during rotation and directly compensating for any imbalances that arise. This means that machines and systems can be balanced during operation without having to interrupt the process. The result is long-lasting machines, less downtime and a permanently high level of efficiency thanks to the optimum vibration behavior of your systems.
Our systems are specially developed for industrial applications and are continuously optimized to reliably meet even the most demanding conditions. They enable precise measurement results, high process reliability and maximum efficiency.
Discover our different solutions - whether ring system, fluid system or mechanical balancing system - and find out which technology best suits your machine and your area of application.
Active ring balancing system
The AB 9000 from Hofmann is a versatile, quickly retrofittable active balancing system that enables fully automatic balancing during operation. With real-time monitoring of the unbalance oscillation, non-contact energy transmission and adaptive balancing processes, it ensures precise results at high speeds. The ring design allows easy integration into machines such as grinding, milling and turning machines, fans or centrifuges, while the Windows-based software and Profibus or Profinet certification ensure smooth operation and automation.
Active fluid balancing system
The HydroBalancer HB 6000 from Hofmann precisely balances even the largest unbalances with fluids and enables fully automatic balancing during operation. Ring containers in four chambers ensure high-precision adjustment in one or two planes, while real-time monitoring of the unbalance oscillation guarantees constant control. The space-saving design allows easy integration into machine spindles or rotors, adaptive fluid dosing ensures accurate results, and retrofitting to existing machines is easy.
Active mechanical balancing system
The MecBalancer MB 4002 enables the automatic balancing of grinding wheels and grinding spindles during operation. Two electromechanically adjustable balancing weights in the balancing head precisely compensate for imbalances, while the non-contact energy transmission ensures wear-free operation. The balancing heads can be used flexibly for flange mounting or spindle installation and guarantee high-precision results without machine downtime.
Universal machines
Vertical, force-measuring balancing machine
Hofmann's vertical, force-measuring balancing machines are designed for high-precision balancing of rotors without their own bearing journals. They offer maximum precision, efficiency and reliability for industrial applications.
Rotors are mounted on a vertically arranged precision spindle using special adapters. The Hofmann force measurement principle ensures precise measurement results and high machine availability thanks to permanent calibration.
The machines are suitable for rotors of all kinds, from impellers and gear components to clutches and brake disks. Expandable options such as flexible rotor holders, unbalance correction systems and protective devices make the machines particularly versatile and precisely tailored to your requirements.
1 kg to 1,000 kg
The vertical, force-measuring balancing machines V-10 to V-300 from Hofmann are designed for the high-precision balancing of disk-shaped rotors without their own bearing journals. They can handle rotors of small components up to a maximum weight of 1,000 kg. With optional add-on modules, the machines can be flexibly expanded to semi-automatic or fully automatic balancing solutions.
Universal machines
Horizontal, force-measuring balancing machine
Hofmann's universal, force-measuring balancing machines can be used to reliably balance horizontal rotors of all types and sizes. They are designed for maximum precision and efficiency in industrial processes.
Rotors are stored on their bearing journals for balancing, mounted on auxiliary shafts or machined as complete units. The Hofmann force measurement principle ensures precise measurement results and high machine availability thanks to permanent calibration.
The machines are suitable for a wide range of applications, from small precision rotors to large, complex assemblies. Expandable options such as flexible rotor holders and protective devices make the horizontal balancing machine particularly versatile and precisely adaptable to the customer's individual requirements.
1 g to 5 kg
The horizontal, force-measuring balancing machines R-7.1 and H-9.1 from Hofmann have been developed for high-precision balancing of small to very small rotors. The R-7.1 is specially designed for extremely small components such as dental turbines or small electric armatures up to a weight of 200 g. The H-9.1 covers the range up to 5 kg and is therefore suitable for a broader spectrum of small rotors. Both versions impress with the highest precision and enable reliable results in applications where the finest measuring accuracy is required.
5 kg to 50kg
The H-11.1 and H-12.1 horizontal, force-measuring balancing machines from Hofmann are designed for the precise balancing of small to medium-sized rotors. The H-11.1 is suitable for workpieces weighing up to 20 kg, while the H-12.1 reliably balances rotors weighing up to 50 kg. Both variants combine high measuring accuracy with flexible application options and ensure efficient balancing processes in a wide range of industrial applications.
50 kg to 10,000 kg
The horizontal, force-measuring balancing machines H-13 to H-34 from Hofmann are designed for the precise balancing of large and heavy rotors. They cover a wide range of applications and enable the balancing of workpieces weighing from 50 kg up to 10,000 kg. Thanks to their robust design, high measuring sensitivity and flexible expansion options, these machines are suitable for demanding industrial applications where maximum precision and reliability are required.
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Our diverse industry world

Automotive and e-mobility
We are actively driving the mobility of tomorrow. With customized balancing solutions, high-precision measurement technology and innovative centrifugal solutions, we ensure technological progress in series production, special machines and electric drives. Hofmann ensures that rotors, drive shafts and electric motors are precisely balanced, vibration-free and durable. This is how we create reliable solutions for classic vehicles, e-mobility and hybrid drives.
Our expertise goes beyond pure technology. We work closely with car manufacturers, suppliers and research institutes to optimize manufacturing processes, production quality and material efficiency. This is how we combine innovation, performance and sustainability on a national and international level.
Mechanical engineering
We develop concepts that make production processes more efficient, more stable and more economical. From prototypes to series production and special machines, we supply precise balancing machines, high-performance measuring technology and high-speed solutions for mechanical engineering. Hofmann stands for individual solutions that are tailored to the specific requirements of plant manufacturers, machine tools and production lines.
We rely on intelligent automation, precise analyses and digital test procedures to minimize downtimes and make optimum use of production capacities. With our experienced team, we support customers during development, commissioning and maintenance, ensuring long-term quality, efficiency and performance.


Aviation
Safety, precision and reliability are crucial here. Our balancing and centrifugal solutions ensure that rotors, turbines and engine components run vibration-free and with high precision. Hofmann supports aviation companies, aircraft manufacturers and suppliers with state-of-the-art measuring technology, high-speed machines and specialized testing systems.
Every component is extensively tested and optimized to achieve the highest standards of smoothness, durability and efficiency. By working closely with manufacturers, test laboratories and development teams, we improve processes, increase safety and guarantee reliable performance for the entire aviation industry.
Energy sector
Reliability, efficiency and sustainability are particularly important in the energy sector. Hofmann offers solutions that optimally balance rotors, generators, turbines and other units. With innovative measuring methods, automation and customized balancing machines, we ensure maximum performance, reduced maintenance costs and stable operating processes for renewable energies, power plants and industrial energy systems.
Our expertise helps energy companies to optimize production processes, minimize downtimes and extend the service life of critical systems. In this way, we contribute to security of supply and create sustainable, future-proof solutions for the energy sector.


Rail vehicles
Hofmann's balancing machines are specially developed for these demanding applications in the rail sector and enable the precise balancing of individual components as well as direct machining in a single process step. To ensure low-vibration operation in rail traffic and maximum ride comfort, Hofmann balances railroad wheels, brake discs, ring gears and wheelsets.
Thanks to their supercritically designed "soft" oscillator, the machines are insensitive to disturbance variables such as floor vibrations or vibrations in workshops and maintenance facilities. This eliminates the need for costly special foundations and facilitates integration into existing production environments. Hofmann balancing machines therefore offer a reliable and economical solution for manufacturers and maintenance companies in rail vehicle construction.
Process industry
For industrial fans, blowers or air conditioning systems, Hofmann products play a central role in energy efficiency, safety and process stability. Hofmann's balancing machines and automatic systems are specially tailored to these requirements and offer solutions for precise balancing of individual components through to highly automated systems for series production.
Thanks to innovative technologies such as supercritical oscillators, intuitive user guidance and optional processing modules, measurement and correction can be integrated quickly, reliably and economically into the production or maintenance process. Hofmann balancing machines thus ensure high system availability, extend the service life of key components and make a decisive contribution to an efficient and trouble-free process industry.
