All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(346 products available)
An air compressor is a machinery product that changes power into potential energy by pressurizing and storing it in the form of compressed air. Some common types of air compressors are as follows:
Dynamic air compressors
A dynamic air compressor is a machine that uses centrifugal force to create compressed air. It works by adding rotational energy into the air, which then increases the volume of air. The boosted air is then pushed out into a housing area where it is stored until further use.
Rotary screw air compressors
Some dynamic air compressor models make use of rotary screws to function. The rotary screw air compressor has two helical screws that compress and push the air out. This type of air compressor is very popular and is used in many small to medium-sized businesses.
Centrifugal air compressors
Centrifugal air compressors are dynamic air compressors that use excited impellers to push the air out at a high volume. A single centrifugal air compressor can produce a very large amount of compressed air. This makes it suitable for use applications that require large quantities of compressed air at high speeds. Examples include factories and assembly lines. Some smaller businesses may also use it like in the oil and gas exploration industry.
Positive displacement air compressors
A positive displacement compressor is a machine that works by distorting an airtight chamber to pressurize and store air. It functions by moving the air into and out of the chamber.
Reciprocating air compressors
The positive displacement air compressor creates compressed air by using a piston to move and press down the air in a cylinder. This compressor forces the air down by moving upward and downward like in human breathing. The pump of a reciprocating compressor can either be oil-filled or lubricated
Model:
This varies depending on whether it is portable or stationary. Stationary ones include the 8-gallon vertical VS 8-gallon horizontal. The portable models include the 8-gallon pancake and the 8-gallon hotdog.
Horsepower:
The horsepower of an air compressor refers to the power rating of its electric motor or engine that drives the pump. It is a unit of power equal to 745.7 watts. It signifies the amount of work the compressor can perform in supplying compressed air. This means that the higher it is, the more air volume and pressure the compressor can produce to tackle demanding tasks.
Dimensions:
A pancake compressor dimension is approximately 21.5 x 17.5 x 23 inches, while hotdog models are 30.5 x 18 x 20 inches. The vertical stationary models are 23 x 19 x 40 inches, while the horizontal is 25 x 27 x 32 inches. A smaller compressor, such as the 3-gallon, is easy to store, while larger models take up more space.
Weight:
A typical 8-gallon air compressor weighs around 60 pounds because of the bulky tank. Smaller models, like the 3-gallon, are around 26 lbs. or less, while larger 30-gallon and above stationary ones can be over 1,000 lbs.
Flow Rate (CFM):
The Craftsman 8-gallon air compressor has a peak flow rate of 2.6 CFM at 90 PSI. CFM stands for Cubic Feet per Minute and measures the volume of air the compressor displaces per minute. A higher CFM means more air volume is being delivered to power tools and equipment.
Operating Pressure:
Also called PSI (Pounds per Square Inch) a compressor generates compressed air. The 8-gallon model features a maximum pressure of 125 PSI. Pressure ratings vary by model. Some reach up to 200 PSI.
Horse Power:
The horse power indicates the motor power that drives the air compressor pump. The pump compresses air and releases it into the tank for storage. The motor needs enough power to efficiently compress air and fill the tank. This ensures there is a readily available air supply. Smaller compressors have lower horsepower motors. These are sufficient for light-duty tasks. However, larger compressors require motors with higher horsepower. This allows them to handle demanding applications that require continuous use.
Regularly Inspect
The first step in air compressor maintenance is to frequently examine it. Look for fluid leaks or any signs of damaged or loose components. Check for air leaks in hoses or connections as well. Fine cracks or weak spots can cause loss of air pressure. Inspect the belt for excessive wear or looseness. A damaged, worn or loose belt can reduce performance. Inspect the electrical cord and plug, checking for fraying or corrosion. A damaged electrical cord could be a potential fire hazard or break the compressor from functioning. Additionally, check the pressure gauges and drain valves for proper operation during each use.
Note: Belts are long, flexible rubbery straps that transfer power from the motor to the pump, allowing the pump to work and compress air. The electric cord delivers the electric current that powers the motor.
Drain Water from Tank
Moisture collects from the compressed air process in the compressor tank. The presence of excess water, if not drained, could cause rust to develop in the tank. This may damage or reduce the lifespan of the tool.
Drain the water by opening the drain valve located at the bottom of the tank. It is a rubber cap that looks like a little round knob. Older models may have a yellow or red plastic cap. Place a container or cup underneath to catch the water. Let a little out; once the water stops flowing, turn the valve back to close it.
Changing Oil
The air compressors use oil to lubricate the pump and motor. Some models are oil-free, while others require oil. Check if it needs oil by examining the oil sight glass on the side of the compressor. If the oil is low, add some. Over time, the oil breaks down so change it as well. The manual will specify when and what type to use, full synthetic or regular.
Filter Cleaning
Craftsman air compressors have air intake filters. Their job is to keep dirt and debris from getting into the compressor. The filters need cleaning per the instruction manual. Remove the cleaned air filter and blow compressed air into it to clean it thoroughly.
Some applications of the 8-gallon air compressors are:
Pneumatic Tool Powering
The 8-gallon air compressor provides high-pressure air to power various pneumatic tools such as nail guns, impact wrenches, spray paint guns, air ratchets, and sanders. These tools are widely used in construction, carpentry, automotive repair, assembly, and other industries.
Inflation
The 8-gallon air compressor can be used for inflation tasks. It can inflate tires of different vehicles, including car tires, bike tires, mower tires, and sports balls. In addition, the air compressor integrates with inflatable items and equipment such as air mattresses and swimming pools.
Spray Painting
The 8-gallon air compressor can be used as a spray paint gun’s propellant source. The gun can be used artfully to apply paints to surfaces with even and smooth coatings. It is ideal for automotive refinishing, furniture painting, and industrial coating applications.
Tire Pressure Maintenance
Maintaining proper tire pressure is essential for safety and fuel efficiency. 8-gallon air compressors can help achieve this by regularly topping off the tire air to prevent it from deflating.
Airing Blowing
The air generated by the 8-gallon air compressor can remove dust and debris from hard-to-reach crevices and spaces. It is widely used in computer keyboards, printers, air conditioning units, and other electronic devices.
Cleaning
The 8-gallon air compressor can help cleaning tasks by providing compressed air to blow out dust, chips, and debris from tools, machinery, workbenches, and sensitive electronic components.
Vehicle Maintenance and Repair
The 8-gallon air compressor is widely used for maintaining and repairing vehicles. It is suitable for use in changing oil filters and other tasks by driving air impact wrenches and ratchets. Besides, the air compressor can help clean out dust and grease from crevices and components using air blasts.
When choosing a suitable 8 gallon air compressor for the target market, it is important to consider the following factors:
Intended application:
Determine the kinds of tools the air compressor will power and whether it will be used in a workshop, job site, or for DIY tasks. If it will be used for high-demand applications like spray painting or construction, consider buying a 2.5 HP air compressor with a higher CFM and PSI rating.
Portability:
Consider how heavy and bulky the air compressor is if it has wheels or a handle. A smaller, lighter, more compact, and portable model suits well for working on the go and at remote locations, while a sturdier one will be great for the workshop.
Noise level:
Since some tools tend to be quite noisy, a useful way of comparing the noise level of different models is by looking at the decibel level. Consider a quieter model for applications that require low noise or to work in environmentally sensitive areas.
Power source:
Consider the air compressor's power source and choose a model with a suitable motor.
Maintenance requirements:
Some air compressors, like oil-lubricated ones, require regular maintenance. They have to be monitored to ensure they are operating at the correct oil levels. In contrast, oil-free models require less frequent maintenance. Consider the maintenance requirements and choose a model that fits the business's maintenance capabilities.
Q1: What tasks can a Craftsman 8-gallon air compressor handle?
A1: The 8-gallon air compressor can handle various tasks, including inflating tires, baskets, sports balls, and air mattresses; powering pneumatic tools like nail guns, staplers, wrenches, and spray guns; assisting with DIY projects and hobbies
Q2: How long does it take to fill an 8-gallon air compressor?
A2: It generally takes 10-15 minutes to fill an 8-gallon air compressor.
Q3: Does an 8-gallon air compressor have a motor?
A3: Yes, the 8-gallon air compressor has a motor. The motor powers the pump that pressurizes the air.
Q4: Is the 8-gallon air compressor loud?
A4: While running, the 8-gallon air compressor may create some noise. It's normal for compressors to be noisy, but some models are quieter than others.
