UNI-PRO company recommends services in the field of balancing of fan impellers.
We carry out balancing at Our Company or at the customer's site.
In the case of balancing the rotor itself (without a drive), we perform diagnostics only at UNI-PRO.
We perform the balancing service at the customer's site with a portable kit used primarily for dynamic balancing in own bearings. No restrictions are assumed on the dimensions and weights of the rotors to be balanced.
In addition to the main function mentioned above , we can make:
UNI-PRO offering balancing service has a staff of experienced employees, as well as equipment and a specialized place to work. Thanks to this, we guarantee the high quality of our services and, consequently, a quick solution to the problem. We attach to each balanced rotor a measurement protocol automatically generated by the balancing machine.
It is very important that fan rotor is balanced statically as well as dynamically. A disturbing symptom during fan operation is an increase in fan vibration. The reason for the vibration can be various causes, such as a dirty impeller, worn bearings, v-belts, poor fan mounting and, of course, an unbalanced impeller. If the rotor was balanced and lost this balance, the reasons can be many. For example, damage to the rotor, detachment of the corrective mass, too loose rotor hub, dirt on the rotor, foreign matter getting into the rotor, etc. In the case of loss of balance, first remove the causes, then the rotor should be absolutely balanced.
As a result of unbalance, the motor, bearings, fan housing, the impeller itself may be destroyed. In extreme cases, the entire fan may be destroyed. Normally rotors are balanced on stationary balancing machines. We balance the rotor itself with the hub. The fan motor is balanced by the motor manufacturer and does not need balancing. In the case of rotor balancing at the customer's site we balance the entire unit, corrective weights are attached only to the fan rotor. A properly balanced fan ensures long-term proper operation for many years.
We can balance fan motor rotors:
The easiest option is to balance statically. It does not take into account the dynamic forces arising during rotor rotation. It can be used as a prebalance. Balancing dynamically takes into account the forces generated during rotation. Such balancing is carried out during the rotation of the rotor. Dynamic balancing is comprehensive and no longer requires static balancing. We also divide balancing into single-plane balancing (possible for narrow rotors) and two-plane balancing (necessary for wide rotors). At UNI-PRO, we use the two-plane method.
We divide balancing activities into:
Various types of balancers are available on the market. They differ in design, purpose and application. In our company we use two types of balancers. The basic balancing machine is the CMT-300H2W, with which we can balance rotors weighing from 3kg to 300kg and 1400mm in diameter. It is a stationary machine used for balancing rotors and other rotating components. It provides fast and very accurate balancing of the rotating element. The second balancing machine is ROTORTEST 3.5. It is a portable set for dynamic balancing in own bearings and for diagnostics of rotating machines. There are no restrictions on the dimensions and weights of the rotors to be repaired. The process carried out with a portable balancer is more complicated and requires much more labor.
The issue of balancing is very broad. All rotating components that cause vibration should be balanced. For example, fan rotors, motor rotors, pulleys, clutches, car wheels, and many other such components. We deal with the subject of balancing various types of industrial fan rotors. Unbalanced mechanisms mounted directly on the pivot of the motor cause damage to the bearings, bearing covers of the motor and further damage to the motor feet. Do not underestimate the possible symptoms, as an unbalanced rotor will eventually lead to cracking of the entire fan. The fan then requires a very expensive repair or replacement with a new one.
