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VTM Group 9D716

Dynamic Hard-bearing Balancing Machines of the 9D716 series have originally been designed to meet the needs of a wide range of customers.

They are undoubtedly the best solution if you need to balance a wide range of rotor types, weights and sizes. This has led to their use in a wide range of industries.

The machines have many unique technical solutions that allow you to set up and balance complex rotors in the shortest possible time without losing the accuracy of the unbalance detection.


MACHINE HIGHLIGHTS
• The specially designed rollers use advanced patented Exact Barrel grinding technology and are mounted on precision bearings.
• The monolithic design of the supports and base eliminates vibration losses during balancing by reducing the number of "oscillating system" elements.
• Allows large initial unbalances to be measured without destroying the machine, and rotor unbalance to be corrected directly on the machine.
• The low natural resonance frequency of the supports allows the rotor to be balanced at low speeds.
• The width of the support rollers and roller block allows the installation of rotors with very short rotor bearing journals. The modular design allows rotors with unusual configurations to be mounted using spacers or tools.
• The height of the roller block is adjustable, allowing rotors with different journal diameters to be balanced and the rotor to be centred during machine set-up.
• The unique "Micro-Tuning" technology eliminates the effects of axial slippage during rotation.
• The belt drive has a patented "long stroke" design that allows any rotor to be rotated using only two drive belts.
• The frequency converter drive provides smooth acceleration and deceleration of the electric motor and infinitely variable speed control of the rotor.


MACHINE DESIGN OPTIONS
• Axial drive that uses a cardan shaft. Capable of transmitting high torque from the electric motor to the rotor. This type of drive is used for parts with high aerodynamic resistance or special design features (e.g. augers).
• Drilling module for unbalance correction of the rotor without removing it from the machine. Convenient to use to increase the productivity of the operation.
• Extended machine bed. The base of the machine can be made for any length of rotor. In our practice we have had machines for rotors of 12 metres in length.

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MEASUREMENT AND CONTROL
• We make balancing easier - the main advantage of our balancing systems.
• The balancing process is displayed in real time and the unbalance behaviour of the rotor is monitored on the screen to achieve the best possible result.
• The maximum sensitivity of the machine at any moment of operation, the set-up and calibration of the machine is carried out by the operator himself.
• Free from the influence of external vibration factors on the measurement result, it has a high degree of protection against various types of interference.
• World-leading functionality and accuracy.


SPECIFICATIONS
Weight range of balanced rotors 5 - 500 kg
Maximum rotor diameter (above the bedding) 1300 mm
Diameter of rotor support journals 30 - 180 mm
Distance between centres of rotor support journals 200 – 2000 mm
Support type Rollers
Transmission element for rotor rotation Belt / Cardan
Minimum achievable residual specific unbalance 0.4 g.mm/kg
Rotor speed range 300 – 1500 rpm
Electric motor power 4.0 kW
Parameters of the supply network 380V, 3 Ph, 50Hz