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## Avoid Over-Lubrication of Bearings Using Acoustic Grease Gun and Grease Meters

The most common problem encountered when using a grease gun is determining the frequency of lubrication or re-greasing. Despite the fact that most of the original equipment manufacturers (OEM) provide a schedule that mentions the timing and amounts of lubrication, often these are not enough. They are general guidelines only and many variations should be implemented based on the carrier’s current conditions. Additionally, the amount, method and intervals of lubrication vary from engine to engine; even those made by the same manufacturer. Technicians should also consider tools that are not supplied with all of this basic information. Some tools also have to be outside of the common lubrication ranges and methods and only require special lubrication techniques. So how to solve these problems?

The first thing to do is to calculate the amount of lubrication using the following formula:

Amount of oil (g) = 0.005 X Outer diameter (mm) X Overall bearing width (mm).

For this purpose, it is necessary to know the outer diameter of the bearing. The amount of lubrication can also be determined based on the speed and load values ​​accepted for the bearing. Trial and error may be necessary in many cases, but great care must be taken not to damage the bearing due to errors in these calculations.

The great news for equipment owners is that there are many sophisticated tools that help eliminate all the trial and error as well as guesswork on oiling numbers and times. Sonic and ultrasonic oil guns help technicians determine when there is enough oil. This can help to avoid excessive oiliness and preserve the life of the bearings. They basically use a transformer fixed on the end of the oil nut. This helps send a signal to a processor that converts ultrasonic sound waves into audible ones. Trained users can use such tools to determine the lubrication frequencies that work best for specific types of bearings.

Additionally, oil level gauges are also very useful in situations where you need the exact oil number specified by the OEM. These amounts are usually in grams and can be detected by oil meters. The disadvantage of a fuel oil meter is that no indication is given to the user as to whether the quantity is correct. That’s why experts recommend using an ultrasonic oil gun with a mixing meter. Together, this is the best technique to understand if a bearing has enough lube. As you gain more experience and learn to feel the amount of oil on a piece of equipment, you will be able to accurately determine the frequency of oiling. Machines have this inherent sense of ‘telling us’ when they need oil; we just have to listen!

Another technique is the use of autolubes which are available in refined microprocessor-controlled form as well as traditional electromechanical form. Both of these types can help control the flow of oil. Once you start using the ultrasonic oil gun with the meter, you can easily calculate the autolubricant distribution rate.

In addition, you need to constantly update your techniques and programs. You also need to monitor the conditions the machines are operating in as these may change. Ambient temperature and bearing vibration frequencies are important indicators to understand if your lubrication techniques are effective. An acoustic oil gun can help you eliminate major problems in the process.

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