The 8 best grease guns in 2021

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Staff, courtesy of Milwaukee

A reliable grease gun is essential if you have any type of mechanical equipment that requires regular lubrication. These hand tools are designed to take a standard grease canister and inject its contents directly into the connections of your machine with a special coupling. They can be powered manually – by pumping a hand lever – or automatically by using rechargeable batteries or compressed air to distribute their grease. Although some use a rigid tube to route their grease, most use a flexible hose that allows the user to maneuver the coupling onto the fittings with one hand while holding the canister with the other.

What is to be considered

The most important question to ask yourself when purchasing a grease gun is what type of power source is best for you. Manual models – which require you to pump a handle or lever to create pressure – while needing some elbow grease, can also be more convenient than automatic pistols, especially if you only have to work on a few fittings. However, if you have a lot of lubrication to do, automatic guns that run on batteries or compressed air might be a better fit. Battery operated guns could be an especially convenient choice if you already own some tools of this particular brand. That way, you can use your existing batteries and buy a cheaper version of the gun that doesn’t have expensive batteries in it.

Likewise, you should think about the amount of fat that you will go through. While most grease guns use standard size grease cartridges, others, like the G. Gun Grease Gun, use bulk grease to fill their 2 gallon canister, making them more useful for anyone looking to process a lot of grease. Or, if you know you’re using low levels of fat, such as when working on your bike or chainsaw, a smaller, compact gun would be a lot more convenient.

Another factor to consider is the length of the hose that comes with your grease gun. Take the time to think about what exactly you will be using it for and if you can go out there and measure how long a hose would need to be to effectively access your connectors.

How we chose

I used a variety of grease guns during my time as part of a landscaping team at a large state park and used them frequently for the maintenance of large mowers, tractors, and other heavy equipment. I used that hands-on experience, in addition to online research and customer feedback, to compile this list of the best grease guns you can buy. I’ve done my best to quote a range of prices, styles, and sizes. Whether you have multiple machines that need frequent lubrication or a small mower that needs occasional maintenance, you should find an option here that is right for you.

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1

Best lightweight battery powered option

MILWAUKEE 2446-21XC M12

Milwaukee
amazon.com

$ 241.04

Important specifications

  • Hose length: 36 in
  • Power supply: battery
  • Weight: 7.2 pounds

This Milwaukee cordless pistol makes it quick and easy to dispense grease thanks to a 12 volt motor that generates an operating pressure of 8,000 PSI. The M12 battery is interchangeable with all other M12 tools and is robust enough to process seven grease cartridges before it needs to be charged.

Also, by designing the frame with a hose storage clip, there’s less chance of accidentally getting grease on your clothes or anything else you’d prefer to keep clean. While this 7.2 pound weight is light for a battery-powered model, it’s a bit heavier than the manual options on our list. So keep that in mind.

  • Easy to use
  • Long-lasting battery
  • Expensive
  • Less convenient to store than hand guns
2

Best lever handle

LockNLube lever handle

LockNLube
amazon.com

$ 69.99

Important specifications

  • Hose length: 20 inch
  • Power supply: Manual
  • Weight: 3.87 pounds

Our favorite feature of this LockNLube model is the fact that its coupling is attached to the device itself, which keeps it clean and protected when not in use and you can also use the hose as a practical carry handle. You can also rotate this coupling while you work, which is very handy when you need to access hard-to-reach connections instead of having to rotate and maneuver the entire gun yourself.

This gun also comes with an additional seal kit so you can replace it right away if the existing one wears out or has problems.

  • Robust construction
  • Practical grease coupling
  • More expensive than most handguns
3rd

Best for maximum capacity

G. Gun grease gun

Important specifications

  • Hose length: 10 foot
  • Power supply: Manual
  • Weight: 18.77 pounds

If you have multiple vehicles or machines that require lubrication, or are just tired of refilling your grease gun with cartridges, this model could be for you. Its 2 gallon canister is ideal for frequent use and the foot operated lever allows you to deliver up to 10,000 PSI without expensive batteries.

Thanks to its 3 m long grease hose, you can also keep the canister on the floor while you position the coupling as you wish. This large canister saves you money by buying bulk grease instead of disposable cartridges.

  • 2 gallon capacity
  • Requires less force than hand pump options
  • Bulky size can be excessive for infrequent uses
4th

Best compact option

Lumax LX-1172

Important specifications

  • Hose length: 4-inch rigid pipe
  • Power supply: Manual
  • Weight: 1.55 pounds

This compact model is a great choice for those who don’t want or need the bulk of the larger capacity models and are just looking for a small gun to have on hand in your RV or truck as a backup. It contains a 3-ounce cartridge to get you started and is conveniently one-handed to use thanks to its pistol grip design.

The no-drip cap is a nice perk too and should prevent unwanted grease marks or stains when you’re not using it. The lack of a hose makes it a little less convenient for hard-to-reach fittings, so keep that in mind.

  • Easy to store
  • Comes with a grease cartridge
  • Has no hose
  • Low capacity would not be practical for frequent use
5

Best pneumatic model

Lincoln 1162 fully automatic

Lincoln
homedepot.com

$ 76.56

Important specifications

  • Hose length: 30 inches
  • Power supply: Pneumatic air
  • Weight: 5.55 pounds

Instead of a hand pump or battery pack, this Lincoln gun runs on compressed air and has a variable speed trigger so you can precisely control the flow of grease. The pistol style handle also provides a comfortable and secure grip, and the 5.5 pound weight should reduce hand and shoulder fatigue while working.

The 30-inch tubing is great for getting into tight spaces, and a convenient coupling storage clip on the device itself keeps it out of the way for easy storage. An easily accessible check valve also allows easy cleaning or removal of hardened grease.

  • Variable speed trigger
  • 30 inch hose
  • 1 year warranty
  • Requires a separate air compressor
6th

Best manual pistol grip

Alemit 555-E

Alemit
amazon.com

$ 56.60

Important specifications

  • Hose length: 18 inches
  • Power supply: Manual
  • Weight: 3.5 pounds

The pistol grip design of this Alemite pistol allows the user to dispense 1 oz of fat every 30 strokes and the ergonomic handle ensures that you have a nice firm grip during use. Depending on the fitting you’re using it on, it can be set to either volume or pressure mode, and a handy vent valve lets you vent trapped air with the push of a button. Plus, the swivel hose connector makes it much easier to meander into difficult areas without having to turn the entire device over. It also comes with a one-year warranty so you are covered in the event of a problem.

  • Convenient to use
  • Hose swivel joint
  • 1 year warranty
7th

Best for precision jobs

Astro Tool 101 Mini

Astro pneumatic tool
amazon.com

$ 11.31

Important specifications

  • Hose length: N / A
  • Power supply: Manual
  • Weight: 1 pound

The limited 3-oz capacity of this tiny gun is definitely lower than the other options on our list, but if you’re just working on smaller fittings and components this shouldn’t be a deal breaker. In addition, its small canister makes it far more convenient for precise applications like air tools or chainsaws where a bulkier device would just be in the way.

The needle nozzle also makes it easy to apply the correct amount of product, unlike couplings, which are designed for higher volume tasks. Plus, it can actually be used with one hand so you can use the other to rotate or manipulate the part you are working on.

  • Compact size is convenient to store and transport
  • Affordable price
  • Low capacity is not practical for use on large machines
8th

Most powerful battery powered option

Lincoln 1884

Lincoln
amazon.com

$ 293.67

Important specifications

  • Hose length: 36 in
  • Power supply: battery
  • Weight: 12 pounds

This Lincoln 20 volt device is a great choice for anyone looking for a powerful grease gun while maintaining the power-efficient operation of a battery-powered model.

The LCD screen tells you your current amount of fat and how much juice is left in your battery, so you know exactly how much time there is to recharge. In addition, a digital selector switch allows you to choose between low or high volume dosing so you can adjust the speed to suit your specific application. An integrated LED also helps to illuminate your workplace.

  • LED display
  • Hard case
  • Expensive
  • Relatively heavy 12 pound weight

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