Horizontal balancing machine for crankshafts
For automatic balancing of symmetrical and asymmetrical 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.
Rotor types
Industries
Flexible for all series sizes
Precise balancing for crankshafts
Hofmann offers both pure unbalance measuring machines without correction and balancing machines with an integrated machining station that automatically corrects the unbalance by drilling. Depending on the accuracy and cycle time requirements in series production, single or multi-station machines are available.
As these machines work according to the distance-measuring principle, no complex foundation is required. Even interfering vibrations caused by passing forklift trucks or neighboring machines do not affect the measuring accuracy. The sophisticated software optimally distributes the measured unbalance to the available correction planes and angular positions.
Hofmann also offers suitable solutions for small batches or purely inspection tasks. The universal balancing machines can also be equipped with manual bore compensation if required, guaranteeing maximum flexibility for varying production requirements.
Another quality feature that can be installed in our balancing machines for crankshafts is the fully automatic calibration system for calibration before the start of production, during operation or after a defined number of balancing cycles.
Variants
Crankshafts
In-line and V-crankshafts
Geometric centering of crankshafts
Mass centering of crankshafts
Large crankshaft
Crankshafts
Type KHK21
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.
Special features
- Quick and easy to convert
- Measuring and correction station (2-station machine) or combined measuring and correction station (1-station machine)
- Maintenance-free and wear-free vibration transducers
- Precise drilling depths thanks to gate detection
- Tool breakage and wear monitoring
- Minimum quantity lubrication
- Chip disposal with suction mask directly at the tool
- High-quality German drill spindle
- Tool management (99 tools)
- Integrated statistics software
- Automatic MFU
- Automatic calibration unit
Field of application
- Final balancing of small car to large truck crankshafts, symmetrical and asymmetrical design
- Automatic loading via loading gantry or robot
Technical data sheets
In-line and V-crankshafts
Type UHK
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.
Special features
- Easy to convert, with bearing pedestals guided in T-slots
- Easy to use thanks to intuitive operating concept
- Economical operation (monitor with compensation data directly on the machine)
- Maintenance-free and wear-free vibration transducers
- Exact drilling depths by teaching the position of the drill tip
- Dry processing
- Chip disposal via suction mask and chip extraction system
- High-quality German drill spindle
- Tool management (99 tools)
- Integrated statistics software
- Automatic MFU
- Automatic calibration unit
Field of application
- Final balancing of small car to large truck crankshafts, symmetrical and asymmetrical design (with mounted ring weights)
- Manual loading
Technical data sheets
Geometric centering of crankshafts
Type UHK 12-ZM1
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.
Special features
- Can be used for "raw" and finished part measurement
- Maintenance-free and wear-free measuring system
- High productivity thanks to quick changeover
- Direct output of the correction values for the downstream processing machine
- "Posiquick C" angular rotation indicator for precise transfer of the compensation position to the rotor
- Compact, space-saving design
- Automatic calibration unit
Field of application
- Balancing of small and medium-sized crankshafts in symmetrical and asymmetrical design (with ring weights)
- Individual and series production
- Maintenance
- Development
Technical data sheets
Mass centering of crankshafts
Type ZHK21-AL1
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.
Special features
- Quick and easy to convert
- Maintenance-free and wear-free vibration transducers
- Switch cabinet directly on the machine
- Integrated statistics software
- Automatic MFU
- Compact, space-saving design
- Automatic calibration unit
Field of application
- Measurement of unmachined crankshafts, symmetrical and asymmetrical design
- Automatic loading via loading gantry or robot; manual loading is also possible
Large crankshaft
Type UHK27-BM1
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 features
- Quick and easy changeover, manual or fully automatic
- Measuring and correction station (1-station machine)
- Maintenance-free and wear-free measuring system
- Precise drilling depths thanks to gate detection
- Tool breakage and wear monitoring
- Minimum quantity lubrication
- Chip disposal with suction mask directly at the tool
- High-quality German drill spindle
- Tool management (99 tools)
- Integrated statistics software
- Automatic MFU
- Automatic calibration unit on the bearing pedestal
- Concept scalable to all machine sizes
Field of application
- Final balancing of large crankshafts, semi-automated with automatic bore compensation
Impressions
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