9A710
Precision soft-bearing balancer for small rotors weighing up to 3 kg. Desktop & belt-driven
Maximal weight, kg
Maximal diameter, mm
Versatile machine for a wide range of small parts
Balancing machine 9A710 is a universal equipment of resonance type designed for high-precision balancing of parts weighing up to 3 kg.
For 20 years of production the design of the machine has not changed, which indicates the reliability of each node. The equipment is popular in workshops for repair of power tools, household appliances and at production facilities producing products with small rotors or electric motors.
The main feature of the machine is its accuracy of unbalance detection (0.4 gmm/kg, on special order – 0.1 gmm/kg), as well as its high versatility. The machine can be used to balance a rotor of any design as long as the dimensions do not exceed the permissible values. The equipment has a horizontal axis of rotation, which allows balancing not only inter-supported rotors, but also cantilever parts, most of the mass of which is concentrated on one side. Also, by using balancing mandrels, you can work with single plane “disk” type parts that do not have their own journals for mounting.
Conclusion: The machine can be used to balance rotors of small motors and generators, shafts of various mechanisms, impeller fans, impellers of pumps and blowers, as well as precision machine tools and rotating elements of drives.
The machine design provides high versatility: monolithic housing bed, movable narrow legs with 4 mm prisms and a special belt drive, most of which is in the housing bed, for optimum utilization of the working space. This makes it possible to balance workpieces with journals up to 4 mm apart.
The machine is also equipped with a separate electrical cabinet, including a control panel and frequency converter for smooth adjustment of the rotational speed of the parts during balancing, as well as reliable protection of the electrical components and systems of the machine. A remote foot pedal is also provided to control the drive for easy setup.
- A measurement cycle of 25 seconds ensures high machine performance;
- The unbalance reduction factor is 95%, which means that you do not even need 5 measurement cycles to achieve the desired results;
- The belt drive has a micro-adjustment mechanism that allows you to precisely set the belt tensioning force and eliminate the occurrence of errors associated with the change of rigidity of the system “support – workpiece – belt – drive”;
- The belt drive has a locking device that allows to hold the drive at the moment of part re-installation;
- The machine is not demanding for maintenance, so there are no additional costs. All consumables are freely available and can be easily replaced;
- Open working area allows you to work with oversized parts and makes the changeover easy and comfortable, which affects the speed of the operation;
- Reversible rotation function, which allows efficient work with rotors whose design determines their direction of rotation, e.g. due to their high aerodynamic resistance;
- Unbalance decomposition into design-determined unbalance points, which makes it easier to balance rotors with design-determined unbalance correction points, e.g. bladed fans, planers with blade slots or magnetic rotors with unbalance correction bosses on the end.
Specialized Precision Support Systems
- Soft support suspension system – Specialized soft support design maximizes sensitivity for micro-unbalance detection in lightweight rotors with “touch-feel” residual unbalance analysis capability. The soft suspension approach provides exceptional measurement sensitivity for precision components requiring minimal residual unbalance.
- Anti-friction prism support design – Specialized prisms with anti-friction material pads featuring high friction coefficient and low hardness preserve rotor contact surfaces while preventing wear. The prism design provides optimal support for delicate precision rotors without surface damage during measurement cycles.
- High sensitivity measurement capability – Design optimization for detection of very small magnitude unbalances enables precision balancing of delicate components. The high sensitivity approach accommodates applications requiring minimal residual unbalance levels.
- Ultra-close center distance capability – Support design accommodates rotors with bearing journal distances as small as 5mm minimum, limited only by drive belt width. This capability enables balancing of extremely compact precision assemblies with minimal spacing requirements.
Small-Scale Production Design
- Extreme diameter accommodation range – Support system handles rotor drive surfaces from 4-100mm diameter while maintaining measurement precision across the entire range. This flexibility accommodates diverse micro to small component drive requirements including specialized coupling methods.
- Height-adjustable support mechanism – Variable height system accommodates extremely small rotor bearing journals from 4-20mm diameter with precise positioning capability. The micro-adjustment range enables setup for miniature precision components with challenging geometric constraints.
- Low-mass support design – Lightweight support construction enables easy positioning relative to guides due to minimal mass, facilitating rapid setup adjustments. The low-mass approach improves operator efficiency during frequent rotor changes in precision applications.
- Unhindered rotor installation capability – Support design enables installation of any rotor configuration within size constraints without geometric restrictions. This flexibility accommodates diverse small component geometries while maintaining measurement precision.
- Simple design reliability focus – Construction emphasizes reliability and simplicity for single or small-scale production environments without sacrificing measurement capability. The reliable design approach reduces maintenance requirements while maintaining consistent performance.
- Foundation-independent desktop design – Ultra-compact configuration eliminates foundation requirements and enables desktop or workbench installation in any location. This installation flexibility maximizes workspace utilization in constrained precision manufacturing environments.
Precision Lightweight Drive System
- Ultra-low power frequency-controlled drive – 0.09kW electric motor optimized for delicate rotor handling with minimal power consumption and maximum speed control precision. Frequency inverter provides smooth acceleration and deceleration with stepless speed regulation across 500-5000 rpm range for high-speed precision applications.
- Adjustable belt tension mechanism – Precision belt tensioning system allows operator selection of optimal tension levels to minimize balancing error for specific rotor characteristics. The adjustable mechanism enables quick rotor installation and removal while maintaining consistent rotational characteristics.
- High-speed capability design – Drive system engineered for operation up to 5000 rpm to accommodate high-speed precision components requiring elevated operational speeds. The high-speed capability enables balancing of specialized rotors with specific speed requirements.
Functions and features of the PB-02M balancing system:
The machine is easy to maintain and has a high repairability thanks to its design and availability of components used in the market, besides its parts are unified and used in different models of machines that is why we always have them in stock.
Calculation of the “maximum allowable imbalance” and “reference” weight will eliminate the need to do mathematical calculations;
Vector based averaging improves the balance accuracy and reduces the measuring cycle;
Graphical and numerical information display makes it easy for anyone to analyze and work;
Balance history allows a quick assessment of the balance progress by returning to the previous measurement results;
Display of acceptable imbalance allows you to instantly understand whether the imbalance of the balanced cardan is in the acceptable limits;
Intuitive interface with tips for beginners to quickly learn how to operate the machine and eliminate the possibility of committing errors.
|
Parameter |
Value |
|---|---|
|
Balancing rotors weight range, kg |
3 |
|
Maximum rotor diameter (over the bed), mm |
400 |
|
Distance between rotor bearing journal centers, mm, min/max |
5 – 300 |
|
Rotor bearin journals diameter, mm |
4 – 20 |
|
Machine type |
Soft-bearing |
|
Support type |
V-Prisms |
|
Minimal achievable residual specific unbalance, gmm/kg |
0.1 |
|
Rotor rotation speed range, rpm |
500 – 5000 |
|
Drive type |
Belt |
|
Electric motor power, kW |
0.09 |
|
Power supply parameters |
230V ± 10%, 1 Ph, 50Hz ± 1 |
|
Balancing system |
PB-02M |
|
Overall machine dimensions (length x width x height), mm |
600 x 600 x 480 |
|
Machine weight, kg |
51 |
- 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.