The 9D715US balancing machine is a high-precision equipment specially designed for balancing crankshafts in engine overhaul shops.

The rigid monolithic construction and the program functions of the balancing system allow to work effectively with large initial unbalance.

The machine is capable of balancing various types of crankshafts, balancing crankshafts complete with flywheel and pulley, including V-type crankshafts with attached bobweights.

The drilling module allows unbalance correction by drilling counterweights directly on the machine.


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    High balancing accuracy 0,4 gmm/kg = 0,4 µm


    • The special design of the rollers, which are assembled with precision bearings and use the advanced, patented grinding technology “exact barrel” ®.
    • The monolithic design of the supports and base prevents vibration losses during balancing by reducing the number of “oscillation system” elements.
    • High-precision sensors can even detect micro-vibration coming from the rotor.


    • Enables measurement of large initial unbalances without destroying the machine, as well as correction of rotor unbalance directly on the machine.
    • Low natural resonance frequency of the supports allows the balancing of the rotor at low rotational speeds.
    • The width of the support rollers and roller block allow the installation of rotors with very short rotor bearing journals. The modular design allows the mounting of rotors with unusual configurations by means of spacers or tooling.
    • The height of the roller block is adjustable, allowing to balance rotors with different diameters of bearing journals and also making possible to center the rotor during machine setup.
    • The unique “MICRO-TUNING” ® technology eliminates the effects of axial misalignment during rotation.
    • The special design of the supports makes it possible to mount the rotor without regard to length, the only limit is the width of the drive belt or the length of the bed.
    • The “belt drive” has a patented “LONG STROKE” ® design which allows, equipped with only two drive belts, to rotate any rotor.
    • The electric motor has a power reserve, which reduces the acceleration and deceleration time of the part.
    • The electric motor has a power reserve, which reduces the acceleration and deceleration time of the part.
    • Smooth acceleration and deceleration of the electric motor as well as infinitely variable speed control of the rotor is provided by the frequency inverter drive.

    Many unique technical solutions for adjusting and balancing complex rotors, without losing precision in unbalance detection.

    Machine design options

    • Axial drive, which 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 drag or special design features (e.g. augers). The axial drive of all machines of the 9D series is equipped with an extendable spindle.
    • Combined drive – both axial drives and a belt drive on one frame. This machine will be in demand by companies with rotors of various designs.
    • Drilling module for unbalance correction of the rotor without removing it from the machine. Handy for use to increase productivity of the operation.
    • Extended machine bed. The base of the machine can be made for any length of rotor. In our practice we had machines for rotors 12 meters long.


    We make balancing easier – the main advantage characterizing our balancing systems.

    • Ease of use and simple operation do not require special theoretical knowledge from the operator.
    • Displays the balancing process in real time and monitors the unbalance behavior of the rotor on the screen to achieve the best possible result.
    • The maximum sensitivity of the machine at any moment of operation, set-up and calibration of the machine is carried out by the operator himself.
    • Free from the influence of external vibration factors on the measuring result, has a high degree of protection against various types of disturbance.
    • World-leading functionality and accuracy due to 40 years of industry development and application experience.


    Mass range of balanced rotors, kg3 – 300
    Maximum rotor diameter (above bed), mm1300
    Rotor journal diameter, mm30 – 180
    Distance between the centers of the rotor bearing journals, mm, min/max150 – 1350
    Type of supportsReels
    Minimum achievable residual specific unbalance,
    Rotor speed range, rpm300 – 1500
    Drive typeVariable frequency asynchronous electric drive
    Electric motor power, kW2,2
    Element transmitting rotor rotationBelt
    InstrumentationBalancing device
    Base length, mm1600


    The page lists the characteristics of the basic model of the machine. Almost any parameter(diameter, length, weight, etc.) of the machine can be changed on the customer’s request. When ordering the machine, all parameters of the machine will be agreed additionally.
    We will calculate the tolerances for the permissible residual disbalance according to your drawings. Balance correctly!