Balancing machines for fans, ventilators and blowers
Precise balancing for all fan sizes for maximum performance and smooth running
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.
Rotor types
Industries
Versatile testing technology for rotors
Precise balancing of fans, ventilators and blowers
Our solutions are as flexible as your requirements. With our specially developed modular system, we can implement tailor-made concepts for almost any task. For special requirements, we expand the modular system in a targeted manner for maximum flexibility and future-proofing.
Our testing technology goes beyond classic unbalance measurements. It includes speed measurement, approaching several speed levels, direction of rotation detection as well as voltage and current analysis. Supplemented by concentricity and axial run-out measurements, we meet the highest quality requirements precisely and reproducibly.
Customer-specific special designs can be realized without any problems. The balancing machines can be perfectly integrated into your assembly line, including the necessary interfaces such as SAP. Loading and unloading as well as unbalance correction can be carried out manually or automatically. Hofmann places particular emphasis on ergonomics and operator support. Each machine delivers precise measurement technology, adapted to your processes.
By networking machines, rotor data can be managed centrally, while rotor systems can also be controlled via offline workstations. Automatic set-up and synchronization with systems such as SAP increase efficiency. The recognition and exchange of serial numbers creates transparency for process monitoring and traceability. Interfaces to conveyor technology and automated floor conveyor systems ensure a continuous material flow. Automatic quality assurance and data archiving with cyclical checks, such as the turnover measurement for spindle machines, ensure stable and reliable production.
Variants
Manual 1- and 2-station machines
Manual 1-station machine
Automatic in-line measuring cells
Manual, vertical spindle machine
Automatic in-line vertical spindle machine
Manual 1- and 2-station machines
Type VHK11E or VHK11E-AM2 (tandem version)
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.
Special features
- Force-measuring, horizontal or vertical balancing machine for self-driven fans
- Low space requirement due to compact design
- High-precision measuring system with a resolution < 0.1 gmm and wide speed range
- Unbalance measurement 1 plane or 2 planes or static + torque
- Smooth-running, ergometrically optimized sliding guard
- Optimum support for the operator during balancing thanks to the current angle display with the help of the bar counter
- Quick and easy to set up process-reliable bar counting
- Short changeover times thanks to standardized interface (mechanical and electrical) for workpiece holders
- Additional EOL measurement parameters (e.g. electricity)
- Free parameterization of the measuring sequence (unbalance, current, speed) for each type
- Free parameterization of the mass compensation (adding, removing, matching)
- Individual screens can be integrated into the stations
- Service-friendly, as everything can be reached from the front
- Statistics packages can be tuned to optimize the process
- In tandem design for short cycle times (approx. t < 30 s)
Field of application
- Balancing and testing of fans and blowers with AC, DC or EC motors
Manual 1-station machine
Type VHK81E
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.
Special features
- Force-measuring, horizontal balancing machine for self-driven fans
- Low space requirement due to compact design
- Ergonomics thanks to freely accessible fan wheel
- High-precision measuring system with a resolution < 0.1 gmm and wide speed range
- Unbalance measurement in 2 planes or static + torque
- Optimum support for the operator during balancing thanks to the current angle display with the help of the bar counter
- Short changeover times thanks to standardized interface (mechanical and electrical) for workpiece holders
- Additional EOL measurement parameters (e.g. electricity)
- Free parameterization of the measuring sequence (unbalance, current, speed) for each type
- Free parameterization of the mass compensation (adding, removing, matching)
- Individual screens can be integrated into the machine
- Service-friendly, as everything is freely accessible
- Statistics packages can be tuned to optimize the process
Field of application
Balancing and testing of fans and blowers with AC, DC or EC motors for building air conditioning & data centers
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.
Special features
- Force-measuring, vertical balancing machine for self-driven fans
- Low space requirement due to compact design
- High-precision measuring system with a resolution < 0.1 gmm and wide speed range
- Unbalance measurement 1 plane or 2 planes or static + torque
- Integrated into automated assembly line including automatic ejector, contacting, bar counting and zero mark scanning.
- Designed for automatic type changeover and mixed operation possible if required
- Additional EOL measurement parameters (e.g. electricity)
- Free parameterization of the measuring sequence (unbalance, current, speed) for each type
- Free parameterization of the mass compensation (adding, removing, matching)
- Interfaces for line control with transfer of compensation parameters
- Statistics packages can be tuned to optimize the process
- Modularly scalable for different line cycle times
Field of application
- Series production of fans, ventilators and blowers
Manual, vertical spindle machine
Type VVK11
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.
Special features
- Force-measuring 2-plane machine with spindle drive
- High-precision spindle with standardized interface for workpiece holders and automatic clamping/unclamping
- Compact control panel with touch screen and operating buttons
- Smooth-running swivel guard
- Large repertoire of clamping devices (manual or automatic clamping)
- Optional: Integrated RUN-OUT measurement (tactile & optical)
- Statistics packages can be coordinated to optimize the process (e.g. upstream injection moulding process)
Field of application
- Vertical balancing of fan wheels in 2 planes
- Measuring and correcting the unbalance
- Measuring axial runout
- Measuring concentricity
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 features
- Force-measuring 2-plane machine without self-propulsion
- High-precision spindle with standardized interface for workpiece holders and automatic clamping/unclamping
- Force-measuring, vertical balancing machine
- Integrated in automated assembly line including automatic lifter.
- Large repertoire of clamping devices (automatic clamping)
- Designed for automatic type changeover and mixed operation possible if required
- Free parameterization of the mass compensation (adding, removing, matching)
- Interfaces for line control with transfer of compensation parameters
- Statistics packages can be coordinated to optimize the process (e.g. upstream injection moulding process)
- Optional: Integrated RUN-OUT measurement (tactile & optical)
- Modularly scalable for different line cycle times
Field of application
- Series production of fans, ventilators and blowers
Impressions
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