9D716
Hard-bearing balancing machine for medium-weight rotors up to 500 kg
Maximal weight, kg
Maximal diameter, mm
Mid-range industrial balancing – production & maintenance
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.
- High accuracy 0,4 gmm/kg = 0,4 μm.
- Real-time balancing process.
- Short unbalance measurement time.
- Maximum machine sensitivity with operator-controlled setup and calibration.
- Large diameter spherical rollers.
- Measures large initial unbalances without damaging the machine.
- Belt drive design for rotating any rotor with two belts.
- Balances rotors with small distances between bearing journals.
- Smooth speed control and acceleration through a frequency inverter drive.
- Options: axial drive, drilling module, extended machine base.
High Precision Balancing
- High-precision vibration sensor – Sensor configuration detects micro-vibrations while filtering external environmental disturbances. The mounting design provides maximum sensitivity throughout the operational envelope for accurate unbalance detection.
- Precision roller assembly with advanced bearings – Rollers manufactured using patented “exact barrel”® grinding technology incorporate high-precision bearings for exceptional rotational accuracy. The specialized bearing configuration extends operational life under continuous use conditions.
- Monolithic support and base construction – Integrated rigid design minimizes oscillation system components to prevent vibration losses during measurement cycles. This structural approach ensures consistent accuracy across the 5-500kg rotor weight range.
Mechanical Structure Design
- Hard-bearing design – Low natural resonance frequency of support structure enables balancing at reduced rotational speeds. This characteristic improves operational safety while reducing power requirements for medium-weight rotors.
- Large initial unbalance handling capability – Structural design accommodates rotors with significant initial unbalances without machine damage or measurement degradation. The robust construction enables correction operations directly on the machine without workpiece removal.
- Narrow support stand design – Compact stand geometry optimizes floor space utilization while maintaining structural rigidity for accurate measurements. The narrow profile enables installation in constrained workshop environments without sacrificing performance.
- Wide roller design for short journal accommodation – Extended roller width supports rotors with minimal bearing journal lengths down to specification limits. This design feature enables balancing of compact rotor assemblies with challenging geometry constraints.
- Modular mounting system with tooling capability – Configurable support structure uses spacers and specialized tooling for unusual rotor configurations. The modular approach maintains measurement accuracy while adapting to non-standard workpiece geometries.
- “MICRO-TUNING”® axial alignment technology – Specialized compensation mechanism eliminates measurement errors from axial misalignment during rotation. This technology ensures accuracy regardless of minor rotor positioning variations during setup.
- Adjustable roller block height system – Variable height mechanism accommodates rotor bearing journals from 30-180mm diameter with precise centering capability. The adjustment range enables setup flexibility for diverse rotor geometries without compromising measurement precision.
Drive System Configuration
- Compact frequency-controlled asynchronous drive – 4kW electric motor with power reserve design optimizes acceleration and deceleration cycles for medium-weight rotors. Frequency inverter provides smooth speed transitions across 300-1500 rpm operational range with infinitely variable control.
- Patented “LONG STROKE”® belt drive mechanism – Configuration with an extended stroke capability and only two drive belts can accommodate rotors with different drive surface diameters. This design provides consistent torque delivery while maintaining operational flexibility..
The PAK-1 unbalance measuring unit represents the latest generation of measuring complexes for dynamic balancing, combining high precision, stability, and ease of use. It’s designed to tackle a wide range of rotor balancing tasks, from simple to the most complex, requiring precise measurements.
Based on an industrial fanless computer with a touchscreen and a multi-channel measuring unit, the system ensures reliability and a long service life, even under intensive use. The PAK-1 utilizes a universal measuring path and modern component base, allowing for equally high accuracy when working with all types of rotors.
Its intuitive interface, self-calibration capability, and automation of key operations make the complex a convenient tool for both experienced specialists and beginners.
Features of the PAK-1 System:
- High-precision dynamic balancing for rotors of any configuration.
- Industrial fanless PC with touchscreen and multi-channel measuring unit.
- Setup using trial runs with calibration weights on production rotors.
- Self-calibration by the operator, eliminating annual service adjustment costs.
- Calculation of permissible unbalance values, even without technical documentation.
- Determination of control weight mass to simplify setup for a specific rotor.
- Real-time display of unbalance magnitude and angular position, including “highlighting” of the correction zone.
- Automatic measurement start upon reaching a set speed and automatic stop after cycle completion.
- Display of unbalance magnitude in grams, gmm, gcm, gmm/kg.
- Vector and exponential averaging for working with moving elements and in noisy conditions.
- Additional functions that significantly simplify the balancing process and expand the technological capabilities of the balancing machine.
- Generation and printing of balancing reports directly from the system.
- USB ports and Ethernet interfaces for connecting a printer, data storage, and integration into a local network.
|
Parameter |
Value |
|---|---|
|
Balancing rotors weight range, kg |
5 – 500 |
|
Maximum rotor diameter (over the bed), mm |
1300 |
|
Distance between rotor bearing journal centers, mm, min/max |
200 – 2000 |
|
Rotor bearin journals diameter, mm |
30 – 180 |
|
Machine type |
Hard-bearing |
|
Support type |
Rollers |
|
Minimal achievable residual specific unbalance, gmm/kg |
0.4 |
|
Rotor rotation speed range, rpm |
300 – 1500 |
|
Drive type |
Belt |
|
Electric motor power, kW |
4 |
|
Power supply parameters |
400V ± 10%, 3 Ph, 50Hz ± 1 |
|
Balancing system |
PAK-1 |
|
Overall machine dimensions (length x width x height), mm |
2700 x 1350 x 1500 |
|
Machine weight, kg |
600 |
- 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.
- Drive belt – 2 pc.
Drilling module
Axial drive
