A granite shop requires a variety of tools and equipment, one of them being an air compressor.
An air compressor is a vital tool that’s responsible for the assistance in operating cutting and grinding tools.
If you’re shopping for an air compressor for your granite shop, it’s best that you take a minute to think about the CFM that may be required to run the tools you use in your day-to-day operations.
The CFM of the air compressor is the measurement of the speed at which the air is released. Each tool has its own set CFM requirement. Whatever air compressor you choose should have a minimum of 10 CFM and it may most likely be considered a commercial air compressor.
Based on research and after testing multiple units, we decided the best air compressor for a granite shop is the EMAX ESP10V080V1 because it has a high CFM of 38 and a Decibel output of only 62. This is exactly what you need if you run a granite shop with high-demand pneumatic tools and it won’t completely break your bank.
If you don’t think this compressor is a good fit for your shop, check out the other great options. Some are more appropriate for single grinder shops while others are capable of running two or three at a time.
If you are looking for an air compressor to power your CNC machine, you will need an air compressor beyond the scope of this guide, feel the form below to get a free no-obligation quote.
Top Air Compressors For A Granite Shop
|Product||CFM||Max PSI||Decibels||Tank Size||HP|
|Quincy QT-54||[email protected] PSI||175 PSI||80||60-gallon||5|
|EMAX||38 @100 PSI||175 PSI||62||80-Gallon||10|
|DeWalt||16.1/[email protected]/90 PSI||155 PSI||71||80-Gallon||4.7|
|California Air Tools||12.60/[email protected]/90 PSI||125 PSI||75||60-Gallon||4|
|Ingersoll Rand||[email protected] PSI||135 PSI||78||60-Gallon||5|
1. EMAX ESP10V080V1 – Best Air compressors For Granite Shop
The EMAX ESP10V080V1 is a workhorse. It has been designed to bring up to 70,000 hours of commercial or industrial use as long as it’s being properly maintained.
This air compressor has the highest CFM, which means it can support up to 5 stone grinders comfortably. It can possibly handle up to 7 grinders working simultaneously. It is also the quietest out of the bunch, with only 62 decibels and yet the most powerful with 10 horsepowers.
Not only does it feature a low RMP pump for maximum efficiency, but it’s built to withstand rigorous operations while maintaining reliability.
The EMAX features a strong 10 HP motor with an oversized pump. It runs at lower RPM speeds than comparable compressors and can still put out high CFMs.
Since the RMS operation is much lower, it reduces the friction and heat buildup on the pump to extend its life. Additionally, the pump features a solid cast iron crankshaft with Timken-style roller bearings in stainless steel to ensure smooth operation.
Moreso, this compressor is equipped with a generous 80-gallon tank for more air storage. Combine this with the 38 CFM put out at 100 PSI and you’ll have absolutely no issue operating the various tools in your shop. The compressor has a max PSI of 175 and a low Decibel rating of just 62, making it one of the quietest air compressors in its class.
Lastly, you will find multiple pressure gauges on the compressor to ensure safety and reliability. One such gauge is for the monitoring of oil pressure. If the oil pressure dips too low, the machine will shut down to save it from any damage.
- 5-year limited warranty
- 70,000-hour life
- Large 80-gallon storage tank
- High CFM rating
- Durable parts
- Quieter than comparable compressors
- Non-absorbent gaskets to prevent oil seepage
- Removable cylinders
2. Quincy QT-54 – The Runner Up Choice
Due to its efficient nature, it is capable of producing much more compressed air at a decreased horsepower. This two-stage compressor is splash lubricated and runs at a lower RMP for maximum performance.
This 5 HP air compressor has a heavy-duty 4-cylinder cast iron design that helps maintain the rigorous tolerances for the industrial-class bearings to help extend the life of the pistons.
The high-efficiency finned tube intercooler provides the machine with exceptional cooling as well as valve life increase. Since the connecting rods are 2 pieces, this means there are fewer moving parts which decrease any downtime.
Additionally, the Quincy QT-54 has a 50,000 pump life and stainless-steel reed valves that are corrosion-resistant. It has the capability of producing 15.4 CFM at 100 PSI with a maximum PSI of 175. This is more than enough PSI to operate all tools you may need in the granite shop.
The large 60-gallon tank stores more air and ensures the compressor operates longer with fewer refills and the compressor puts out 80 Decibels, making it just a little louder than comparable compressors.
Lastly, the Quincy air compressor features an extra-capacity oil reservoir that ensures the temperature of the oil is always low. All electrical components are UL & CSA approved and it comes with a 1-year factory warranty and extends to a 3-year “No Bull” warranty.
- Decent warranty
- Large storage tank
- Heavy-duty components
- 50,000+ pump life
- Splash lubricated
- Temperature protection
- High CFM
- Louder than comparable compressors
- Stationary unit
One such piece of equipment is the Dewalt DXCMLA478065 compressor. It features an integrated control panel, pressure gauges, an airflow regulator, and quick connect air outlets.
The compressor is powered by a 4.7 HP single stage 230 Volt electric motor with a cast iron, three-cylinder pump. The compressor has a convenient oil level sight glass so you can keep tabs on the oil level within the pump. This makes for outstanding performance and can easily power air tools such as sanders, cutting tools, impacts, and more.
Moreso, the generous 80-gallon tank delivers an amazing 16.1 CFM at 40 PSI and 14.0 CFM at 90 PSI with a maximum PSI of 155. A larger air compressor with a generous PSI means longer run times and less downtime for refilling the large vertical tank. You also won’t need to worry about damaging your ears since it has a 71 Decibel rating, lower than many other comparable air compressors.
Lastly, this DeWalt compressor comes with a 2-year pump warranty and a 1-year warranty on all other parts. It’s also shipped to you with a synthetic blend air compressor oil.
- Generous warranty
- Durable parts
- Powerful 4.7 HP motor
- Comes with oil
- Ideal CFM output
- High PSI for optimal tool performance
- Low Decibel rating
You will find a variety of gauges and switches mounted to the compressor such as an auto drain valve, condor pressure switch, and two pressure control gauges.
When it comes to performance, the California Air Tools oil-free dual-piston pump system is nothing less than exceptional. The oil-free dual-piston pump design has a life cycle of 3000+ hours, which is 1500 hours more than that of comparable air compressors. Since the machine is oil-free, this means that there is minimal maintenance that has to be done on it.
Additionally, the powerful 2.0 HP motor operates at just 1680 RPM, which creates only 75 Decibels of noise and less wear. It has an extremely low amp draw of 14 Amps and has a thermal overload protector.
It takes just 6.5 minutes to refill from empty and 2 minutes from 95-215 PSI. It will run then continuously for 30-60 minutes depending on the CFM and PSI you’re utilizing.
Lastly, you will receive a 1-year limited warranty on the product.
- Thermal overload protector
- Low Amp draw
- 70/30 duty cycle
- No oil required
- Large 60-gallon tank
- Powerful motor
- Ideal CFM for pneumatic tools
- Not as quiet as others
It can operate for 2,000 hours between each service and up to four times longer than that of petroleum-based lubricants.
Additionally, the pump life has been designed to run for over 5,000 hours of hassle-free use.
This air compressor is reliable, easy to use, and versatile. It offers 18.1 CFM at 90 PSI, more than enough to bring power to your pneumatic tools. The 5 HP motor features thermal overload protection and a manual reset for extended life.
Additionally, since it’s electric, it can be used indoors where gas would be an otherwise unsafe option. It has a Decibel rating of 78, which is a little louder than other comparable models, but with the right earplugs, you shouldn’t be bothered by the noise.
Lastly, even though this compressor is stationary, it’s not overly heavy, so you could still move it if you needed to.
It has an easy-to-change oil filter, a sight gauge to check oil levels, a pressure switch, and it’s completely pre-wired and fully assembled when you purchase it. It runs off of 100% continuous duty, bringing you a maximum PSI of 135. This tank provides you with plenty of air for even the most demanding applications.
- High CFM for multiple pneumatic tool operation
- Long life
- 100% continuous duty
- Plenty of air storage
- Powerful motor
- Not as quiet as other comparable models
How To Choose An Air Compressor For Your Granite Shop
It should come as no surprise that you can’t just pick any air compressor, stick it in your shop, and expect it to do what you need it to do. A granite shop requires tools to have a high CFM rating to perform adequately.
The easy part is picking the right type of compressor, but the challenging part is ensuring it’s the proper size.
The compressor should be sized according to CFM, PSI, and HP requirements of the most air-consuming tools you have in your shop.
CFM (Cubic Feet Per Minute)
The CFM is the measure of how much air your compressor can produce in one minute. If your air compressor has a high CFM, it means that it’s also going to have more compressed air at the desired PSI.
You will find that your pneumatic tools have a certain CFM and PSI requirement to properly operate. If you are running larger and more demanding tools with high air volume requirements, you will need a compressor with both high CFM and PSI.
Many individuals choose to operate a low-duty-cycle air compressor with high demands. If this is a characteristic you’re looking for with your air compressor, consider a two-stage compressor rather than a rotary type. A rotary-type compressor is supposed to constantly run, but if it’s not operating for a certain period of time, it becomes more of an issue.
The general rule of thumb in regards to horsepower is that the more horsepower, or HP, your compressor has, the higher the CFM rating will be. This is the most important decision that needs to be made when choosing an air compressor. Since the higher horsepower will create a higher CFM, there will be that better potential for higher air demands.
Single or Two-Stage Compressors
Single and two-stage compressors are very different in that one gives more PSI than the other. Single-stage compressors are better suited for homeowners and hobbyists who are working with lower-demanding pneumatic tools for crafts and automotive repair.
When it comes to two-stage compressors, these are ideal for commercial facility or manufacturing applications because it has the ability to keep up with the elevated air demands. Two-stage compressors use the same air twice, which equals twice the PSI and more power than a single-stage compressor.
When choosing an air compressor for your granite shop, it’s important to look at the voltage of the unit. This is important because if the compressor’s voltage type doesn’t match the voltage of the power source, the compressor isn’t going to work.
You will find that the single-stage compressors use a standard power supply that you would see in a home, apartment, or small business. Although this is the ideal choice if you have no other type of power supply, it does come with some limitations.
The Single-stage compressors can only go as high as 7.5 HP. If you want anything higher than that, you then have to go with a three-phase unit.
The three-phase units are used in commercial and industrial applications. It brings smoother power and is more efficient, but it’s more costly to install than a traditional compressor.
If your building already has three-phase power hookups, then you much choose a three-phase compressor unless you’re willing to rewire the outlets for a single-phase compressor.
Not only are PSI, CFM, and Power considerations, but you also have to think about the tank size, orientation, and noise level of the compressor.
Tank size is an important factor because a larger tank will provide air for extended periods, but it will also take longer to fill.
Tank orientation refers to the style of the compressor. Most industrial compressors are vertical, but there are also horizontal styles. Consider the space where it will go before picking an orientation.
Lastly, the Decibel rating of the compressor is something that should be taken into consideration. If your compressor will be inside the shop, you’re going to want a lower Decibel rating, somewhere in the 60’s and low 70’s.
Anything higher than that and you may need to use earplugs so you don’t risk deafness. If the compressor is going to be hooked up in a separate room or outside the facility, the Decibel rating may not be an issue. Otherwise, consider one of the quiet air compressors.
Other Types of Compressors
All of the air compressors on the list are commercial-grade reciprocating compressors. These are the most common types used in small to medium businesses. They are powered by a piston that reciprocates and pushes air into the chamber that compresses it. These are generally much noisier than others because the internal parts rub together and create heat and friction.
Rotary Screw Compressors
Rotary screw compressors are more powerful than reciprocating compressors. They are also much quieter and are meant to run constantly. If you need anything more than a 60% duty cycle, then this is the ideal type of compressor. These also have variable-speed drives that will only use the level you need them to operate at. This maximizes energy savings, power, and efficiency.
Oil-Free Scroll Compressors
If your demands include clean, oil-free, and dry compressed air, then consider an oil-free scroll compressor. They are best used in heavy-duty manufacturing environments. Since they don’t require oil, there is little maintenance that needs to be done on the unit.
Choosing the proper air compressor for your granite shop relies heavily upon certain characteristics such as CFM, PSI, and HP ratings. Without the proper air compressor, your pneumatic tools aren’t going to perform as they should, delaying your various granite projects.
We found that the EMAX ESP10V080V1 is the best air compressor for a granite shop because it meets most, if not all, of the demands required. It has the highest CFM out of the others and has the lowest Decibel rating.
We really hope that our guide has helped you with your mission to choose the best air compressor for your granite shop.