BALANCING MACHINE 9K719
An soft-bearing type balancing machine with a pendulum suspension and cylindrical rollers for the qualitative determination and elimination of unbalance of heavy rotors of various configurations. These machines are very popular with our customers in the metallurgical industry, and the machines also serve the repair facilities of power plants, petrochemical and shipyards.
The scope of these machines is far from being limited to the listed industries, since the equipment is quite versatile. Machines for balancing heavy rotors are a set of innovative technical solutions that can significantly reduce the time of repair and maintenance of the rotor, while ensuring the safety of the product and staff.
Balancing machines model 9K719 effectively cope with the balancing of the rotors of large electric motors and generators. Rotors of gas compressor turbines, as well as technological equipment of power plants of all types.
The design of the rollers eliminates the possibility of knurling on the rotor necks. This is important when balancing gas turbine rotors, ship shafts and propellers.
The presence in the design of balancing equipment of adjusting jacks and roller cassettes with the function of self-installation of the rotor made it possible to use these machines for balancing shafts of metallurgical equipment and rotors of large aircraft engines. This is important when balancing gas turbine rotors, ship shafts and propellers. The presence in the design of balancing equipment of adjusting jacks and roller cassettes with the function of self-installation of the rotor made it possible to use these machines for balancing shafts of metallurgical equipment and rotors of large aircraft engines.
WE OFFER A COMPLETE SOLUTION, SUPPORT AND TRAINING WHEN YOU PURCHASE
Our company has a technical support service center. If you have any questions, you can contact us for help.Commercial offer for the equipment
Leave your request and our manager will get in touch with you to detail the commercial offer preparation.
ADVANTAGES AND FEATURES
Self-aligning roller cassettes
- The supports have “self-aligning roller cassettes”, the advantage of which is that there is no need to precisely align the supports relative to each other and relative to the rotor, as well as preventing the appearance of “knurling” on the rotor bearing journals.
- Special design of rollers and high-quality components. The wide cylindrical surface of the rollers also prevents the appearance of "knurling".
- Roller cassettes have an additional set of rollers of a different size, to minimize equipment downtime when repairing a damaged set of rollers, as well as to reduce the balancing error.



The “Knurling” effect occurs if the contact surface of the rotor has less hardness than the rollers and the rotor has a large mass. To reduce this effect, the rollers have a wide contact surface and radius chamfers.
- The design of the supports allows you to adjust the height of the "roller cassettes", that is, you can balance the rotor with different diameters of the bearing journals.
- The unique design of the supports and their movable suspension of the articulated-lever type.
- The machine supports have a low natural "resonant frequency", which allows balancing when the rotor rotates in the range of 120 ... 250 rpm. Such revolutions make the balancing process safe and are recommended even if the working revolutions of the rotor are ten times higher. The low-speed balancing method has been used by all manufacturers of balancing equipment for many years.
A feature of the repair of heavy rotors is the fact that any delay in the repair entails significant financial costs. Because while the rotor is balanced - it does not work ...



Performance and operation
- The machines are equipped with jacks that provide shockless quick installation of the rotor, which made it possible to ensure the safety of the contact surfaces of the rotor and machine rollers, in addition, the jacks serve as supports for the rotor during assembly, maintenance, and other repair work, simplifying these processes.
- Due to its unique design, the machine does not need a foundation and can be installed on the workshop floor.
- The electric drive is equipped with a frequency converter, which allows you to protect electrical equipment, as well as organize smooth acceleration and deceleration of the rotor and provide stepless smooth regulation of the rotor rotation.
- A powerful electric motor that allows you to reduce the time of balancing the rotor by reducing its "acceleration and deceleration" cycle. Please note that the drive power on our machines is usually 2 times higher than that of the main competitors, which means the acceleration time and deceleration time are 2 times less, which increases the productivity of the operation.
- The rotation of the rotor on machines of the heavy series produces an "axial drive" using a cardan shaft. For rotors of relatively low mass, the machines can be equipped with a "belt drive", which makes them more versatile and allows you to balance a very wide range of parts.
- To work with a belt drive, it is necessary to use "axial stops" ,their task is to prevent the rotor from moving in the axial direction, they also have their advantages. Thanks to the unique patented MOVING ROLLER ® design, the contact of the rotor with the stops does not cause large errors affecting the balance.
We have thought in detail all the design solutions of the manufactured balancing machines, based on practical experience in their use, as a result, heavy series machines have a high degree of reliability and maintainability.
Machine version and equipment
- Machine base - 3 sections
- Measuring support with articulated-lever suspension - 2 pcs.
- Self-aligning roller cassette (up to 3000 kg) - 2 pcs.
- Self-aligning roller cassette (up to 10,000 kg) - 2 pcs.
- Belt drive with belt tension system - 1 pc.
- Axial drive headstock - 1 pc.
- Vibration sensor - 2 pcs.
- Laser speed converter - 1 pc.
- Angle position sensor - 1 pc.
- Rigid axle stops - 2 sets
- Jacks for smooth installation of the rotor on the machine - 2 pcs.
- Balancing system PAK-1 (signal processing module, industrial computer with touch monitor) – 1 pc.
- Frequency drive electrical cabinet with machine control panel - 1 pc.
- Drive belts, drive cardan - 1 set.
BALANCING SYSTEM AND CONTROL
We make balancing easier - the main advantage characterizing our balancing systems.- Ease of use and ease of operation do not require special theoretical knowledge from the operator.
- Displays the real-time balancing process, monitors the rotor imbalance behavior on the screen to achieve the best result.
- The maximum sensitivity of the machine at any moment of operation, adjustment to the rotor and calibration of the machine is carried out by the operator himself.
- Free of the influence of external vibration factors on the measurement result, has a high level of noise immunity of all elements.
- World-leading functionality and accuracy thanks to 40 years of industry development and application experience.
CHARACTERISTICS
Parameter | 9K719 |
---|---|
Mass range of balanced rotors, kg | 100 — 10000 |
Maximum rotor diameter (above bed), mm | 2500 |
Diameter of bearing necks of the rotor, mm | 30 — 420 |
Distance between the centers of the supporting necks of the rotor, mm, min/max | 400 — 5600 |
Support type | Rollers |
Minimum achievable residual specific imbalance, g.mm/kg | 0,4 |
Rotor speed range, rpm | 200 — 1300 |
Type of drive | Variable frequency asynchronous electric drive |
Electric motor power, kW | 30 |
Element transmitting the rotation of the rotor | Belt / cardan |
Instrumentation | PAK-1 |
Base length, mm | 6000 |
PURCHASE SUPPORT AND TRAINING
Our company has the service center for technical support in case of any questions you can contact us for help.
LEARN MORE ABOUT OTHER MACHINES IN THE SERIES
The page lists the characteristics of the basic model of the machine. Almost any parameter(diameter, length, weight, etc.) of the bench can be changed on the customer's request. When ordering the machine, all parameters of the machine will be agreed additionally.
