9D716

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The universal balancing machine model 9D716 is a machine that has already made its mark on the market. The model is versatile and practical thanks to its balanced characteristics.

The high load capacity (up to 500 kg) and unbalance accuracy (0.4 g*mm/kg) allow the balancing of a wide range of parts. The unbalance reduction ratio is 95%, which is excellent for any machine. Additional factors such as the narrow roller cassettes and high support height make this the most versatile machine in its class.

It is also important to remember that the machine can be upgraded without interrupting the production process. The machine is very well designed and the operator has the ability to quickly change cassettes, which allows for better results when balancing small parts using prisms, as well as parts with a large mass and initial imbalance using rollers. In addition, specialized tooling can also be used, such as for balancing crankshafts or rotors in their own bearings.

Machines of this model can be assembled like a construction kit – you decide on the appearance of the machine at the ordering stage. As standard, the machine includes a bed with two movable legs, a belt drive for rotating the workpiece and a separate control cabinet for controlling the drive, machine systems and unbalance measurement. During the ordering process, you can add or replace the “belt drive” with an “axial drive”, as well as complete the machine with an “unbalance correction module” or “jacks” for shockless rotor mounting. All of these modules have their own benefits and purpose, which can be very useful for efficient balancing tasks. Additional modules can significantly reduce the time of your repair or manufacturing process.

The choice is not limited to just mechanical modules, a variety of balancing systems are also available. You can order a machine with the PB-02M microprocessor-based balancing system or the PAK-1 hardware and software system, which runs on an industrial computer with a touch screen. It is also possible to order a unique balancing system with the functions required for you.

Pre-resonant supports – balancing heavy parts with large initial unbalance at safe speeds;
High supports – the possibility of installing oversized parts with a diameter not exceeding 1300 mm;
Single plane balancing – using special mandrels it is possible to balance disk type parts without their journals;
Radial stop – safe balancing of cantilever rotors with the center of mass on one side of the part;
Roller height adjustment – balancing of parts with different neck diameters and easy rotor alignment;

Frequency-controlled electric drive – stepless change of part rotation speed, control of rotor acceleration/deceleration time, correct adjustment;
Axial drive – minimize aerodynamic properties of the part, fast acceleration and deceleration, easy balancing of structurally complex products;
Jacks – reducing installation time and eliminating the risk of damage to part surfaces or rollers due to inadvertent impact during rotor installation;
Narrow rollers and roller cassettes – work with structurally complex parts with limited access to journals or with narrow journals (example: crankshaft);

Main Specifications

Parameters	9D716
Balancing rotors weight range, kg	5 – 500
Maximum rotor diameter (over the bed), mm	1300
Rotor bearin journals diameter, mm	30 – 180
Distance between rotor bearing journal centers, mm, min/max	200 – 2000
Support type	Rollers
Minimal achievable residual specific unbalance, gmm/kg	0,4
Rotor rotation speed range, rpm	300 – 1500
Drive type	Frequency-controlled asynchronous electric drive
Electric motor power, kW	4,0
Drive gear type	Belt
Equipment	Balancing device
Bed length, mm	2600

MACHINES CAN BE DELIVERED WITH:

AXIAL (CARDAN) DRIVE PARTS;

A BELT DRIVE PARTS – OPTIONAL;

COMBINED – OPTIONAL.

The operation manual on the machine with acceptance tests reports and the basic electric circuit	1 pc.
The operation manual on balancing system	1 pc.

PRODUCT HIGHLIGHTS

ILLUSTRATIVE 3D OUTLOOK

Design features of the machine 9D716

The modular design of the bed allows to make the machine for parts of any length even if it is 12 m. ;

Axial and radial stops are made according to the patented “MOVING ROLLER” technology, which eliminates errors related to the contact of the stop with the workpiece and provides reliable collective protection;

The belt drive has a unique design “LONG STROKE” allowing to work with parts with significantly different overall dimensions and it is enough to have only 2 drive belts instead of 20;

In the design of supports there is a mechanism of micro-tuning of roller cassettes “micro-tuning mechanism”, thanks to it it is possible to accurately center the part at adjustment that will allow to exclude the appearance of knurling marks on the journals of the part and to exclude the appearance of errors affecting the quality of balancing;

The rollers are made as a separate roller unit, which allows you to quickly disassemble them if necessary and regrind them if there are defects on the contact surface. The high accuracy of the machine is due to the rollers, which are made by patented grinding technology “exact barrel”.

The monolithic design of the supports and bed eliminates the loss of vibration during unbalance measurement, which provides highly accurate results, especially important when balancing parts with high balancing requirements;

The electric drives of the machine are equipped with motors with a large power reserve, which provides fast acceleration and deceleration of the workpiece, this reduces energy and time consumption for balancing operation, and is also an extremely important factor if the workpiece has strong journals and large mass. Minimal rotation time reduces the chance of knurling slides on the journals. In addition, the large power reserve guarantees a long service life, as the motor does not operate at its limits.

PAK-1 BALANCING SYSTEM

Firstly, the digital system is based on an industrial fanless computer with a touch screen and a measuring unit.

Secondly, set-up mode by “triple start-ups” method with the use of calibration weights on the serial rotors with initial unbalance.

At last, calibration of the machine is made by the operator enabling to reach the maximum sensitivity of the machine, thus exempting from the duty to pay annual calibration fees.

Even so, take in consideration following functions:

Calculation of the balance tolerance values in default of technical documentation for the balancing product.
Value calculation of the correction test weights to simplify the tuning process for the balancing rotor.
Real-time balancing display, i.e. if there is any defect or a hindrance of a rotor, it’s visible immediately as fluctuation in measurement result.
View of unbalance value in grams, gmm, gsm, gmm / kg optionally.
Taking into account the eccentricity of the balancing mandrel.

Unbalance distribution on n-planes correction
Calculation of hole depth for correction of unbalance.
Possibility of decomposition of correcting weights into structurally conditioned anchoring points (blades, fans, slots).
Rotor balancing report creating and printing.
USB port for printer connection, USB-flash memory, port for connecting to local network and Ethernet network.