Balancing systems for aviation
Balancing technology for aircraft engines and their components in accordance with international aviation standards
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.
Industries
Standards that stand out
Solutions for aircraft engines, compressor wheels and fan blades in aviation
Hofmann balancing systems for aviation combine state-of-the-art measurement technology with maximum accuracy. The proven force measuring principle ensures permanent calibration and reduces costs, as additional calibration runs are no longer necessary. Thanks to the consistent design in accordance with international SAE standards, the systems are optimally prepared for current and future requirements of the aviation industry.
The product family includes horizontal and vertical balancing machines, precise torque scales and customized special solutions for the fully automatic machining of engine components. Flexible protection concepts with integrated sound insulation ensure maximum safety during operation. In addition, the specially developed software ensures simple, intuitive operation and at the same time provides all the important data for reliable documentation. This results in solutions that are used worldwide in the aerospace industry for the precise balancing of aircraft engines, compressor wheels and fan blades.
Variants
Horizontal balancing machines
Vertical balancing machines
Torque scales
High-speed balancing machines
Special solutions
Horizontal balancing machines
H-12J to H-26JV-1
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.
Special features
- Workpiece storage between spindles
- Very high sensitivity and measuring accuracy
- Machine design according to SAE ARP 4048
- Bearing pedestal prepared to accommodate
- Roller, prismatic or plain bearings
- Tooling for assemblies
- Cardan shaft and/or belt drive
- Optional compressed air drive
- Quick changeover to other rotor types
- Mounting the machine on the machine bed
- Flexible protection concepts with sound insulation
Field of application
- Balancing of engine rotors, assemblies and components
- with own shaft journals
- on an auxiliary shaft
- as an assembly in a holder
- Balancing of rotors such as
- Fans
- Turbines and compressors
- Gearbox
- Auxiliary power turbines
- Compressed air starter
Vertical balancing machines
V-10J to V-400J
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.
Special features
- Very high measuring sensitivity and accuracy
- Machine design according to SAE ARP 4050 or 5323
- Balancing spindle with maintenance-free precision bearings and interface for clamping devices in accordance with ARP 4050
- Precise clamping devices to achieve the smallest residual imbalances
- Flexible protective covers for easy and problem-free access to the spindle and rotor mount
Field of application
- Balancing of small to large disk-shaped rotors
- without own shaft journals
- on one or two levels
- Balancing of rotors such as
- Turbine disks
- Compressor disks
- Spacer rings
- Fans
Torque scales
HWS-1 to HWS-240
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.
Special features
- Very high sensitivity and measuring accuracy
- Force measuring principle with permanent calibration
- Thermal fluctuations are compensated for
- Single and three-axis version
- Friction-free and backlash-free bearing of the measuring arms
- Wear-free construction
- Interface for workpiece holder according to SAE ARP 1134
- Quick changeover to another bucket type
- Compact dimensions
- Optional
- Windbreak
- BLADES bucket sorting software
- Blade holders
Field of application
- Determining the center of gravity
- in one axis for the radial moment
- in three axes for radial, axial and tangential torque
- Measuring blades from
- Fans
- Turbines and compressors
- Helicopter main and tail rotors
High-speed balancing machines
R-50.1HS/R-150.1HS
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 features
- Workpiece storage between spindles
- Suitable for high speeds and bearing forces
- with highly accurate permanent alignment
- with standard flange interface for holding fixtures
- Drive of a spindle with belt
- Non-driven spindle can be moved and positioned axially
- Measuring platform on round bar springs
- with permanent calibration
- No influence on the unbalance measurement due to constraining forces
- Sensor system for measuring shaft runout or shaft vibration
- Protective device with integrated sound insulation
Field of application
- Balancing of drive shafts from aircraft engines or aircraft propulsion systems
- up to the maximum operating speed
- in spindle storage
- in up to three equalization levels
- Balancing of rotors such as
- Power take-off shafts from aircraft engines
- Drive shafts for helicopter tail drives
- Checking and correcting the concentricity
Special solutions
Balancing cells
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 features
- Linking one or more balancing machines (e.g. also a horizontal and a vertical balancing machine) with a machine tool
- "Programming" of the machine tool by the unbalance measuring system of the balancing machine
- Loading of the individual stations manually or e.g. by robot
Field of application
- Fully or semi-automatic balancing of engine components such as blisks or drive shafts in production
- Balancing of rotors in series production with special requirements for unbalance correction
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