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With a seemingly endless variety of air-powered tools manufactured for everything from home craft projects to industrial stone fabrication, pneumatic tool requirements and compressor configurations can range widely. If you are considering the purchase of a Trow & Holden pneumatic hammer, there are a few things to keep in mind to ensure you have an adequate source of compressed air to power your tool.
Choosing the air compressor that is right for you is really a matter of how it will be used, budget, and personal preference. While this document is intended to help you find an air compressor best suited for your needs, don&#;t forget to keep in mind the nature of your work and any limiting factors, such as access to electricity, ventilation, portability, and noise.
There are three primary specifications to keep in mind when shopping for an air compressor.
Trow & Holden pneumatic tools require an air flow of approximately 3&#;8 CFM (cubic feet per minute) at 90&#;100 psi (pounds per square inch), which will vary based on the size of your air tool. You will want to make sure the compressor&#;s output and duty cycle will allow you to take advantage of your air tool&#;s full range of power. Remember, too much air cannot damage your Trow & Holden pneumatic hammer.
Another important consideration is the compressor&#;s tank size. Trow & Holden pneumatic hammers run on a constant flow of air &#; unlike more common air-powered tools, which only require frequent bursts of air. This means your Trow & Holden air hammer will deplete its air supply quickly. We generally recommend a compressor with at least 20 gallons of air storage capacity.
Lastly, think about whether or not you want to use compressed air to power other types of air tools, such as grinders, drills or polishers. Running multiple tools at the same time can significantly increase the amount of air needed to power your tools. When possible, consider two-stage compressors, which are most appropriate for powering pneumatic tools with high air consumption.
All pneumatic tools will require a certain air flow and pressure for optimal performance. While it is important that your compressor&#;s output meets these specifications, you should also have an understanding of how these basic measurements and compressor features are related:
This is the measure of air pressure delivered by your compressor. The higher the psi, the further the air can be compressed meaning a larger volume of compressed air can be stored in the tank.
This is the volume of air that your compressor can pump in one minute at a specific working pressure. High CFM ratings mean a compressor can provide more air, making higher CFM units more practical for larger applications.
This is the unit of measurement for the power your compressors motor produces. Higher horsepower engines produce greater psi and are capable of carrying a heavier workload. This can be particularly important if your need for portability limits your compressors tank size.
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Compressors with larger tanks (measured in gallons) can supply more air to your tools between duty cycles, which will put less strain on your compressor&#;s motor and pump. Smaller tanks will increase portability, but output and duty cycle rates should be considered carefully.
To choose a compressor that will meet the requirements for your tools to function properly, use this formula. Select the tool that requires the highest CFM at the highest psi. Then add 50% to the required CFM as a safety margin. For example, if a tool requires 3 CFM at 90 psi, choose a compressor that provides at a minimum 4.5 CFM at 90 psi.
Once you know the volume and pressure requirements you need, your choices can be considered between these main configurations:
A great resource for finding the right unit is your local power equipment dealer. Remember that an air compressor should be able to safely power all the tools you plan on using, so bring along a list of those tools and their air specifications to share with the dealer. Be sure to start the unit and try the controls. Ask the dealer if he or she has a model that can be test-driven on-site or at home before making a final buying decision.
Start by determining the maximum pressure you need to operate your tools or machines, or to run your processes. Depending on the pressure you might need a single-stage (9 bar max) or multi-stage compressor (400 bar max).
Find out the flow rate you will require. The flow rate is the maximum volume of air that must move through your entire system per minute or per second. This will be measured in cubic feet per minute, liters per second, or cubic meters per hour. Include a safety margin of about 30%.
So for example for applications that require pressures of up to 10 bar with flow rates up to m3/h, screw compressors are the best fit. For larger flow rates requirements centrifugal compressors would be more economical. For high pressure requirements, say 14 bar to about 300 bar, reciprocating air compressors or piston compressors will be best because of their energy efficiency.
Intermittent duty-cycles require a compressor that is energy efficient in that scenario. You might even want a compressor that will adapt to an increased workload because you plan to expand your facility soon. Knowing if your compressed air demand is continuous or intermittent, or a mix between, will help you decide. You could benefit from a fixed speed or variable speed drive compressor. Identifying the correct compressor air regulation will save you a huge amount of energy over the lifetime of your compressor.
And finally consider the usage, configuration, and space limitations you might have. You might want something that is easily moveable, or fully portable. You might have ample room to spare and be fine with something that is stationary but prefer it to be as quiet as possible.
Once you&#;ve become clear on your requirements then it&#;s a matter of reviewing the spec sheets of air compressors and finding one that meets the criteria. This is where you will benefit from the knowledge of experts who can review your facility and guide your decision. Some air compressor manufacturers offer free audits to help customers make the right choice.
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