Industrial fan balance on site; Specialized services under the supervision of engineer Ali Akbari 09120961180—09368650421
Industrial fan balance on site with advanced equipment and supervision of engineer Ali Akbari; Reducing vibration, increasing the life of bearings and electric motors, without the need to open and close the fan.
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## Introduction
Industrial fans are the heart of ventilation and process systems in factories, workshops and sheds. Any imbalance in the fan impeller can cause vibration, high noise, severe bearing wear and even shaft failure. Performing On-site Balancing allows you to reduce vibrations to a standard level without opening the fan and shutting down the production line for a long time.
In this article, relying on the experience and knowledge of Engineer Ali Akbari in the field of vibration analysis and fan balance, we explain in simple but specialized language what balance is, why it is important, how it is done on site and what benefits it has for you.
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## What is industrial fan balance?
In short, balance means adjusting the distribution of mass on the fan blade so that during rotation, the center of mass coincides with the axis of rotation and no additional centrifugal force is created.
### types of unbalance
Unbalances are usually divided into three main categories:
When the propeller tends to rotate in a certain direction and descend. This type of imbalance shows itself more at low speeds.
is related to the distribution of mass on two different planes of the propeller and causes severe vibration at high speeds. For high speed industrial fans, dynamic balance is essential.
In practice, most industrial fans have a combination of these two types of imbalance, and to correct it, accurate vibration analysis equipment should be used.
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## Why is industrial fan balance important?
Based on the experience of Engineer Ali Akbari in various projects, ignoring the proper balance of the fan can lead to hidden and obvious costs:
- Increasing vibration and transferring it to the structure and ducts
- Reducing the life of bearings and bearings
- heating up and reducing the life of the electric motor
- Shaft cracking or propeller failure in severe cases
- Production of noise and sound pollution in the work environment
- Reducing efficiency and increasing energy consumption
Balance of the industrial fan on site will help these problems be controlled and the device will work within the standard vibration range.
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## What is industrial fan balance in place?
Balance in place means performing the operation of detecting the lack of balance and correcting it, without fully opening the fan and removing the propeller from the installation location.
### The difference between the balance in the place and the balance in the workshop
- In workshop balance, the impeller is separated from the shaft and mounted on a special balance device.
- In balancing in place, the fan is operated in the same position installed on the chassis and structure, with the same coupling and actual conditions, and the measurement is made on the machine in service.
This method has several main advantages:
- Less need for disassembly and assembly
- Reducing production line sleep time
- measurement in real working conditions (load, temperature, installation conditions)
- Reducing costs compared to the full opening and closing of the system
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## Signs of the need for industrial fan balance
If you see any of the following in your fans, you most likely need balancing:
- Perceptible vibration on the fan body or chassis
- Abnormal sound, roar or loud noise when working
- Tightening or frequent failure of bearings
- Overheating of bearings or electric motor
- Repeated breaking of screws, mounts or cracks in the chassis
- Observing sediment, dust or materials sitting on the blades
In many projects, Engineer Ali Akbari detects the condition of fan imbalance during the initial visit and using vibration measuring equipment.
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## Industrial fan balancing steps in place (step by step)
In this section, we explain the standard on-site fan balancing process step-by-step, as performed by professional teams led by Engineer Ali Akbari:
### 1. Initial visit and review of conditions
- checking the type of fan (axial, centrifugal, radial, ceiling, etc.)
- Check the power and speed of the electric motor
- Checking the state of the chassis, foundation and coupling
- Checking the safety situation: protectors, accesses, sensor installation possibility
### 2. Primary measurement of vibration
Using vibration analyzer and accelerometer sensor, vibration is measured at key points:
- Coupling side bearing
- propeller side bearing
- fan body and structure
Results as standard values like:
- Vibration speed: \( \text{mm/s} \) (ISO 10816/20816 standard range)
- Frequency spectrum (FFT) to detect the type of fault (unbalance, laxity, misalignment, etc.)
### 3. Diagnosing the type of fault (only balance or other problems)
If the main peak of the vibration is at a frequency of 1x round (1X), the main problem is often unbalance.
If you see other peaks, there may be the following problems with the balance:
- Misalignment
- Mechanical looseness (Looseness)
- Bearing fault
In specialized projects, Engineer Ali Akbari first identifies other basic defects and fixes them as much as possible, then enters the balancing phase so that the result is stable.
### 4. Choosing the balance method (single page or double page)
Based on fan type and propeller length:
- Small and narrow fans → usually single plate balance
- Big, long or high-round fans → double-plane balance (dynamic)
### 5. Implementation of trial balance (Trial Weight)
### 6. Installation of correction weight
At this stage, the balance weight is permanently installed on the propeller:
- with bolts and nuts
- or welding (if possible and according to the standard)
- or add/remove material from spokes (in special jobs)
### 7. Final measurement and balance verification
After installing the correction weight:
- The fan will start again.
- Vibration is measured at previous points.
- If the amount of vibration is within the standard range and accepted by the employer, the balance is confirmed.
Engineer Ali Akbari usually provides a documentary report at the end including before and after balance (vibration values, spectrum images, location of weights).
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## Advantages of industrial fan balance on site
The correct and principled execution of the balance on site brings tangible benefits for you:
- Significant reduction of vibration and noise
- Increasing the life of bearings and electric motor
- reducing sudden stops and unexpected failures
- reduction of maintenance and repairs cost
- Improving efficiency and reducing energy consumption
- No need to fully open the fan and reduce the sleep time of the line
In many projects implemented by the team under the supervision of Engineer Ali Akbari, with just one basic balance, the amount of vibration has been reduced by 50 to 80% and successive breakdowns have been prevented.
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## Important points before applying for on-site fan balance
It is suggested to check and prepare the following before the presence of the balance team:
The presence of dust, sediment or materials stuck on the blades itself causes imbalance. It is better to clean the propeller as much as possible before the operation.
A weak or cracked chassis can exacerbate vibration. If needed, chassis reinforcement is required.
Misaligned shafts or worn belts can cause vibration. It is better to check their condition and correct it if needed.
It is necessary to have a platform, ladder, fan guard and observe safety precautions to be present at the place.
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## When is rebalancing necessary?
Even if you have done a balance once, you may need to rebalance in the following situations:
- Changing propeller or electric motor
- Basic repairs (Overhaul)
- Process changes (increase in temperature, changing the type of gas or suspended particles)
- foundation settlement or change in the structure
- Re-accumulation of sediment or dust on the blades
- The fan is hit or a foreign object collides with the propeller
The recommendation of engineer Ali Akbari is to perform a vibration analysis and balance check at least once a year for critical fans.
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## Choosing the right team for industrial fan balancing on site
In order for the results to be lasting and reliable, it is very important to choose the right specialist. Consider the following criteria:
- Use of professional vibration analysis equipment and portable balance device
- Having practical experience on all kinds of industrial fans (axial, centrifugal, bag filter, boiler fan, etc.)
- Providing documented report before and after the balance
- Mastery of relevant standards such as ISO 10816/20816
- Having an experienced team to work in harsh industrial and high conditions
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## Summary
On-site industrial fan balancing is a specialized and cost-effective solution to reduce vibration, increase equipment life and prevent sudden production stops. By accurately measuring the vibrations and installing correction weights on the propeller, the fan can be kept within the standard vibration range.
Experience has shown that the use of expert and experienced teams, such as the team under the supervision of Engineer Ali Akbari, greatly reduces the risk of sudden breakdowns and helps to increase productivity and reduce maintenance and repair costs.
If your industrial unit has fans with high vibration and noise, frequent bearing failures, or similar problems, professional on-site balancing can be the first and most effective step to fix these problems.
Engineer Ali Akbari 09120961180
Sample video of fans and balanced devices