10 Best Air Grease Gun 2025 in the United States

The Milwaukee 2646-20 M18 2-Spd Grease Gun stands out with its impressive 10,000 PSI max operating pressure, making it suitable for tough jobs requiring high pressure. Its 48-inch flexible hose is a significant advantage, allowing users to reach difficult fittings with ease. The air bleeder valve is a practical feature for quick priming, reducing downtime, while the lock-on/lock-off trigger enhances user convenience by allowing continuous operation without constant pressure on the trigger.

Additionally, the pre-set grease counter dial offers precision in application, which is beneficial for tasks requiring exact amounts of grease. This grease gun is cordless, operating on an 18-volt lithium-ion battery (not included), which eliminates the need for a separate power source and enhances portability. The build quality appears robust with its metal construction, promising durability. However, the fact that batteries are not included could be seen as a drawback, requiring an additional purchase if you do not already own Milwaukee M18 batteries.

The product's weight of 4.21 pounds might be a consideration for prolonged use. Nonetheless, the 5-year tool warranty is a reassuring aspect, reflecting the manufacturer’s confidence in its durability. This tool is ranked #13 in Grease Guns and fits well within the automotive category, making it ideal for professionals and serious DIY enthusiasts who need a reliable and powerful grease gun.

The DEWALT 20V MAX Grease Gun paired with the LUMAX Heavy Duty Quick Release Grease Coupler is a strong choice for anyone needing a powerful grease gun for industrial or heavy-duty tasks. It delivers a high pressure of up to 10,000 PSI, which helps push grease through even clogged fittings, and the grease flow can be easily controlled with a variable speed trigger. Its grease capacity and flow rate support efficient work, pumping up to 5 ounces per minute. The included 42-inch flexible hose is a good length, allowing you to reach tight or hard-to-access spots comfortably.

The LUMAX coupler stands out with an even higher pressure rating of 15,000 PSI and a burst pressure of 22,000 PSI, ensuring durability and safety when disconnecting from pressurized fittings. The ergonomic thumb lever on the coupler makes attaching and detaching quick and less tiring. The build quality feels solid, fitting DEWALT’s reputation, and the cordless design powered by a rechargeable battery adds convenience by freeing you from cords and hoses. However, keep in mind that the battery is sold separately, which means extra cost and managing charging.

For beginners, the cordless feature and easy controls make this grease gun user-friendly, but if you don’t have compatible batteries or want a budget option, this might not be ideal. This bundle is well-suited for professionals or serious hobbyists who need a reliable, tough, and flexible grease gun setup that handles heavy workloads with ease.

The DEWALT 20V MAX Grease Gun Kit stands out in the air-grease-gun category with its impressive pressure rating of up to 10,000 PSI, which is great for tackling tough, clogged grease fittings. Its high-volume pump can deliver 5.0 oz per minute, making it suitable for high-flow applications. The inclusion of a 42-inch flexible hose is a practical choice, allowing users to reach grease fittings in harder-to-access areas, which is often a challenge with grease guns.

In terms of build quality, this DEWALT model is robust and appears to be well-designed for durability. The integrated no-mar foot design supports stable placement on flat surfaces, which is helpful during use. The bright LED light is a convenient feature, especially when working in dimly lit environments, ensuring you don’t miss any fittings.

Ease of use is enhanced by the variable speed trigger, allowing for controlled grease flow, which can be adjusted according to the task at hand. The air-bleeder valve simplifies pump priming after cartridge changes, saving time and effort for the user.

However, the grease gun's weight at 14.8 pounds could be a drawback for some users, particularly during extended use. While the plastic material used in its construction likely contributes to a lighter build compared to metal alternatives, it might not feel as premium. Additionally, since it's battery-powered, it requires charging, although a battery and charger are included, which is a plus.

This tool is particularly well-suited for professionals or serious DIY enthusiasts who require powerful performance and flexibility in their grease application tasks. Its strong reviews and a three-year warranty also add to its appeal, indicating user satisfaction and a degree of reliability.