Written by Timothy Dale | Updated 1:21 PM, February 15, 2021

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Grease guns are used in a variety of applications-from car repair shops to maintenance of household tools-to dispense grease quickly and accurately. Grease is applied to the moving parts of the system to provide a layer of lubrication, reduce friction between parts and prevent machine wear.

The most suitable grease gun for your workshop or garage depends on many factors, including the type of grease gun and its grease filling options, durability, and its ability to prevent leaks under pressure. Check out this list of top grease guns to learn about the types of grease guns available and their functions.

Grease guns are used to help lubricate tools, vehicles and heavy machinery. Before buying, please understand how and when to use the grease gun. For example, many parts of a car engine are lubricated with oil that is much thinner than grease; attempts to apply grease to these parts may damage the vehicle. Use the correct amount of grease to avoid causing a series of problems, including friction and wear and motor damage or complete parts failure.

Also consider how to use the grease gun. If it is not often used for small maintenance work, battery-powered or pneumatic grease guns may be a project with too much investment. In order to maintain a ship, the grease gun should be waterproof. If you want to use it more frequently in a professional garage or even a busy home workshop, stick to an electric grease gun: the handle grease gun will quickly tire users.

According to its power source, grease guns are divided into three types: handle, pneumatic and battery powered.

The traditional grease gun design uses the handle to pump grease through a narrow nozzle, thereby increasing the pressure and accuracy of grease application. Today's lever-type grease guns include a mechanism to prevent grease from flowing out until the pressure is increased to the correct level. At this point, use the trigger to release the grease through the hole. The cheapest is that this type of gun does not require a power source or air hose.

Pneumatic grease guns use an air compressor to deliver compressed air through an air hose, pushing grease through the nozzle. On smaller equipment, the pressure generated by the air compressor may be difficult to control.

Using a grease gun powered by a rechargeable battery, users can walk freely to maintain vehicles, boats or lawn mowers. But, of course, the battery must be charged. In addition, these grease guns are usually the most expensive option.

When looking for grease guns, you must first understand some of their most important characteristics, including their power supply, ease of use, ergonomics, leakage tendency, loading options, and durability.

The pressure output of the grease gun is in pounds per square inch or PSI. The pressure output can range from as low as 3,000 PSI to more than 10,000 PSI; ensure that the correct pressure is used for each application. If the PSI is too low, the spray gun will not be able to apply enough grease to maintain large equipment, and a very high PSI may damage smaller mechanisms, such as pneumatic tools.

When looking for a new grease gun, find a product that is designed to be efficient, easy to learn, and easy to use.

The user's hand can hold, guide, lift and control the application area and the flow of grease, so many users are looking for ergonomically designed products to make the spray gun comfortable to hold and operate. The design can also improve user efficiency and achieve faster and more accurate control. Look for products made with cushioned handles, lightweight materials, and multiple nozzle options to reduce hand fatigue.

Grease guns use pressure to push grease through narrow nozzles. However, grease guns with low-quality or poorly designed plungers, heads, or seals may leak. Not only will this cause a lot of confusion, but it will also reduce the pressure in the grease gun. To help prevent leaks, look for grease guns with durable metal barrels, hardened plungers, high-quality seals, and barrel heads with clean, tight threads.

Grease guns can have one of three different loading options: expansion, suction or cartridge type.

Look for a product that incorporates high durability into an ergonomic and easy-to-use design. Manufacturers have also tried to use anti-warpage hardened plungers and bleed valves to safely release the built-up pressure to prevent leakage.

These grease guns are selected based on quality and price, with a focus on the important considerations mentioned above.

Although the handle may be easier for beginners, experienced DIYers and industry professionals will appreciate the impressive information provided by this battery-powered Lincoln. The tool also provides an LED light to illuminate the work area.

The grease gun is equipped with a 30-inch flexible hose, two lithium-ion batteries, a charger and a protective carrying case. Its maximum pressure output is 10,000 PSI, but the speed is adjusted from high-volume output to low-volume output.

This DEWALT 20V MAX cordless grease gun includes 10 tubes, each containing 14 ounces of grease. The grease is waterproof, and contains rust inhibitors and oxidation inhibitors, which help extend the life of the machine and improve its function. This 20V grease gun is powered by a lithium-ion battery, including a battery charger and a shoulder strap, making it easy to carry.

The maximum pressure output of the grease gun is 10,000 PSI, and the grease flow rate is adjusted by a variable speed trigger. This gun is equipped with a 42-inch extra-long hose, which has an LED light that can illuminate the dark space and improve accuracy and efficiency.

Astro Pneumatic Tool 101 Mini Grease Gun has a classic heavy-duty design. It must be loaded manually in batches, but after loading, the device can apply up to 3 ounces of lubricant from a single bucket to compatible small power tools.

It has a needle nozzle to help control the flow of grease, and the maximum pressure output is 2,900 PSI. The grease gun has a compact structure, light weight, and can be easily operated with one hand.

Versatility is an important feature of any tool. Lumax's manual lever grease gun can be loaded directly by expansion method, can also be loaded from a bucket of grease by suction method, or into a 14-ounce oil canister.

The grease gun has a maximum pressure output of 7,000 PSI and is equipped with a heavy-duty 18 gauge steel barrel and cover to help prevent leakage. Depending on how the grease is loaded, there may be air bubbles in the barrel. Use the bleed valve to expel these air pockets and apply grease through the included 18-inch flexible hose and connected joints.

Manual lever guns like this carbine gun have several advantages over pneumatic or battery-powered guns, including the ability to be used without preparation. Use bulk, suction or barrel loading methods to fill the grease gun, and use the innovative T-handle plunger and the non-slip rubber coating on the barrel to provide a firm grip.

The grease gun can accept a 14-ounce oil canister and has a maximum output pressure of 4,500 PSI. The anodized aluminum lid has a die-casting head and exhaust valve to help start and eliminate air bubbles.

This pneumatic grease gun is connected to the air hose at the bottom of the ergonomic handle, which helps prevent the hose from getting in the way. Pressurized air flows upward through the air hose into the spray gun, where it drives an air piston, which in turn pushes the grease piston, pressurizing the barrel and forcing the grease through the nozzle.

Use a variable speed trigger to control the grease flow. Lincoln's maximum pressure output is 6,000 PSI, and it is equipped with a check valve and exhaust device for easy cleaning and filling.

For regular maintenance of pneumatic tools, small marine motors and lawn mowers, most users only need a low-power grease gun, such as GreaseTek Premium Pistol Grip Grease Gun, which distributes grease with a maximum pressure output of 4,000 PSI. This grease gun is affordable and comes with an 18-inch hose and extension tube.

The hose can work in narrow places, while the extension pipe can reach easily accessible valves. Its hardened plunger helps prevent leakage and improve start-up. There is a bleed valve on the top of the grease gun, which can be used to relieve pressure and promote oil filling by releasing air bubbles in the system.

If you still have questions, please continue reading to find answers to some of the most common questions that concern oil guns.

Load the grease gun in one of three ways: bulk, suction or barrel.

Generally speaking, any free-flowing high-quality lubricant can be used with the grease gun, but do not mix different types of grease to avoid damage to the equipment.

If you apply too much or too little grease, it may cause serious problems with the machine and may lead to a complete failure.

The grease gun coupler is an accessory that allows the grease gun to be connected to the mechanical joint to inject grease into the lubrication system.

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