- 25 Sheppard Ave W, Suite 300, Toronto, ON, M2N 6S6
"We Serve All Ontario"
“Roy” is an expert in vibration analysis, troubleshooting and balancing of rotating equipment with over 35 years of work experience in Machinery Maintenance, Reliability and Condition Monitoring. Roy is a Mechanical Engineering Technologist holding CAT. III Vibration Analysis Certification from Vibration Institute. and CMVA.
No matter what type your rotating equipment is, Roy is capable of detecting, analyzing and correcting their high noise & vibrations for any root cause such as unbalance, resonance, looseness, bent shaft, etc. This means unacceptable high vibrations of equipment will be eliminated or reduced to acceptable low levels. If you want to avoid catastrophic failures and high cost of repairs of your critical rotating equipment, “Fan Balancing Co.” is the smart choice.
Mass imbalance is the most common cause of high vibrations in the fans and other rotating equipment. Imbalance is a condition where the center of mass is not coincident with the center of rotation, i.e. non-uniform mass distribution about the center of rotation. The heavy spot pulls the fan and shaft around with it causing a deflection that is felt at the bearings. The task for the balancer is to find the amount and location of the heavy spot and apply an equal and opposite weight (180*) to compensate.
New manufactured fans are factory balanced within acceptable levels, however the level of imbalance can change (worsen) due to many reasons like :
There are two methods of balancing of rotors and wheels, Static & Dynamic Balancing.
In Static balancing, fan wheel is stationary (not powered) but is free to rotate. With a slight rotation of the fan manually, it stops while heavy spot tends to stay at the bottom because of gravity force. By adding trial weight to upper part or opposite side of the fan wheel and repeating the test, the fan can get balanced partially. Static balancing is not accurate and precise for medium to high speed fans and must always be followed by Dynamic Balancing.
Dynamic Balancing is the balancing of a fan under rotational speed when all dynamic forces persist. The fan wheel, which is mounted on shaft and bearings, will be driven by a motor (direct or indirect) usually below or at fan nominal speed. A vibration instrument with sensors attached to bearings are used for achieving precise balancing.
Below table provides information for a medium size fan (D 50”-70”) :
| Shop Balancing | On-Site Balancing | |
|---|---|---|
| Down Time | 1-4 Days | 1-4 Hours |
| Manpower | 3-4 | 1-2 |
| Accuracy | Good | Better |
| Service Cost | Over $10,000 | Under $1000 |
| Operational Loss | Very High | Very Low |
| Other Service Providers | Fan Balancing Co. | |
|---|---|---|
| Technician Certification | Level I or II | Level III |
| Technician Background | High School Diploma | University Degree |
| Technician Experience | 2 years | 12 years |
| Instrument (Portable Analyzer) | 1-2 channels | Advanced 4 channels |
| Sensor type | Single Axis | Tri-Axial |
| Balancing Planes | 1-2 | 2-4 |
| Completion Time | 4-8 hrs. | 1-2 hrs. |
| Success Rate | 50-70% | 100% |
