The 10 Best Cordless Grease Guns
This wiki has been updated 17 times since it was first published in February of 2017. Whether you're a professional auto mechanic, an industrial equipment repairperson, or an at-home DIYer, a grease gun is a must-have tool for lubricating ball bearings or other machinery parts. These cordless models offer a similar performance to their traditional pneumatic counterparts, but can be a whole lot more convenient, as they allow for a greater range of movement. When users buy our independently chosen editorial choices, we may earn commissions to help fund the Wiki. If you'd like to contribute your own research to the Wiki, please get started by reviewing this introductory video.
November 25, 2020:
For this update, we removed the Alemite 585-B1 due to reports of battery issues, and replaced it with a manual model, the LockNLube Pistol. Though it requires a little more elbow grease to operate than a battery-powered model, the LockNLube Pistol is a low-priced, lightweight option that would be a great choice for anyone who doesn't feel like lugging around heavy battery packs. Its loop & lock storage feature is really convenient, and allows the coupler to attach to the top of the unit, keeping the hose from whipping around and getting grease everywhere.
If you're interested in more variety, this collection of grease guns should provide some more options.
When using a grease gun, it's important to keep in mind that you're operating a tool capable of producing a significant amount of pressure. Too much pressure can actually damage the components you're trying to maintain, so make sure to take the time to ensure you're using the correct amount of pressure, and closely monitor your gun -- and the workpiece -- as you go. Too much pressure can lead to grease leaking into electrical components, or damaging seals and gaskets.
When loading in your grease cartridge, take care to make sure no contaminants end up in the barrel. Debris or metal shavings can cause serious damage if they are pumped in with the grease.
Even if you're an experienced grease gun user, you still probably have to deal with the inevitable problem of getting grease on your hands. Investing in a box of disposable gloves might be a good idea, and can make cleanup a lot easier.
June 26, 2019:
Cordless battery-powered grease guns are considerably more convenient than pneumatic models. They allow for greater maneuverability and, in the case of battery-powered units, are just as efficient. For those that already have a number of power tools from one of the brands on our list, your best option will usually be to buy a cordless grease gun in the same family, as this will have compatible batteries. For example, the DeWalt DCGG571M1 Max uses the exact same batteries as all of the company's 20V Max tools, so you won't need to spend any extra money to buy additional ones. If you are buying a kit, like the Milwaukee 2646-22CT M18, which comes with two batteries, then you'll wind up with some spares to use on all of your other M18 tools.
If you want a very high pressure output that can clear clogged fittings, you'll want to look at the DeWalt DCGG571M1 Max, Milwaukee 2646-22CT M18, and Alemite 585-B1, as these can all produce up to 10,000 PSI. Both the DeWalt DCGG571M1 Max and Milwaukee 2646-22CT M18 also have flexible hoses over 40 inches long, making it easier to get at hard to reach fittings. The Ingersoll Rand LUB5130 and Alemite 585-B1 weigh right around seven pounds, which makes them some of the lightest weight models available and less fatiguing than others for long periods of use.
Since not everybody can afford or needs a battery-powered unit, we also included some high-quality and budget-friendly manual models. Of these, the Alemite 555-E is capable of the highest pressure, but the Lumax LX-1152 is only 500 PSI behind and costs a fraction of the price. It also has a more comfortable grip. The Carbyne 3101501 is a touch behind both of the other two in quality, but has some convenient features, like a textured grip and the inclusion of both a flexible and stiff hose.
John Deere TY27457 With a LCD that shows real-time data for grease output, grease level, and remaining battery capacity, this advanced model can take much of the guesswork out of operating one of these units. You'll never again get caught unawares with a dead battery midway through the job. It also features a Kevlar-reinforced hose and a durable hydraulic coupler. johndeerestore.com
Greasing Up The Competition
But why use grease in the first place, and what kinds of benefits does this tool offer?
Whether you work in an auto shop, repair factory equipment for a living, or are a DIYer trying to keep your riding lawn mower running smoothly and efficiently at all times, delivering the proper lubrication to the moving components of this equipment will be integral to ensuring an extended operating life. That said, you'll need a tool that not only provides the right amount of lubrication where it's needed most, but also one that is easy to use and maneuver around your working space without the restrictions of a power cord. For these types of situations, a cordless grease gun is a great tool for the job.
A cordless grease gun is a handheld workshop tool that delivers pressurized lubrication through a barrel or cylinder cartridge and an aperture on the tool to a metal fitting on a receiving component. Depending on the circumstance, the aperture on a grease gun is designed to fit closely with the receiving aperture on a mechanical part, ensuring that lubricant is precisely applied where it's needed, minimizing waste or messy delivery of the substance itself.
But why use grease in the first place, and what kinds of benefits does this tool offer? As a substance thicker than oil, grease naturally clings to (and saturates) the surfaces of the components to which it is applied without dripping or leaking away. This makes the tool adept at lubricating things like lawnmower spindles, chainsaw bar nose sprockets, and automobile parts among other types of equipment. Additionally, applying the proper amount of grease to a moving part reduces the potential for harmful friction that could occur without regular lubrication.
Sharing many similar components across their overall anatomy, grease guns are generally broken up into three main categories of use, including manual (i.e. hand-operated), pneumatic (air-powered), and battery-operated devices. Manual models are equipped with either a handle or pistol grip and provide up to 1.28 grams of grease for each pump. Pneumatic devices also use a pistol grip along with the combination of an air compressor and trigger, which directs the air through a hose and into the gun's barrel. Battery-operated devices deliver the same amount of power as their pneumatic counterparts, but without a separate air line.
Aside from lacking a power cord to disrupt one's workflow, many of the cordless options on our list are also battery-operated. The lithium-ion battery serves as the tool's main power source for delivering the necessary energy to dispense grease to various work parts instead of complete dependence on one's hands (or an air compressor) to make the tool operate. This significantly reduces operator fatigue, while also being useful when having to perform intricate, time-consuming grease application work in extremely tight spaces on automobiles or other machines. Most battery-operated grease guns are pressure-rated to a range of between 6,000 and 10,000 PSI and generally come in 12-volt, 18-volt, and 20-volt varieties.
Aiming For The Right Options
Pressure and power are among the most important considerations to make when investing in a cordless grease gun. The tool you select should have a dependable electric motor and be capable of delivering over 7,000 PSI, especially if you're working with equipment in cold weather where high pressure is needed to unfreeze clogged fittings.
Some guns are versatile enough to offer the advantage of bulk, cartridge, and suction loading all at the same time, depending on your needs.
Consider the refilling options for your gun of choice. Some guns are versatile enough to offer the advantage of bulk, cartridge, and suction loading all at the same time, depending on your needs.
Some cordless grease guns are equipped with built-in LEDs, which can come in very handy when working in poorly-lit areas.
Finally, make sure that you're proactive in your use of the grease gun you select. In other words, be aware of the potential issues that can come from potential overgreasing and undergreasing your machinery and how best to calibrate the device to apply the proper amount of lubricant.
A Brief History Of The Cordless Grease Gun
The origins of grease gun technology can be traced back to the beginning of the 20th century. As the son of a co-owner of a small die-casting plant in Chicago, the Alemite Die Casting and Manufacturing Company, it was Arthur Gulborg's job to keep the oil cups full on all the die casting machines by attending to them several times each day. As a solution to this incredibly laborious and rather dirty process, Gulborg invented one of the first grease guns and fittings in 1916. This fitting consisted of a braided metal hose, a unique end connection, and a lubricator pump, which Gulborg eventually named as the Alemite High-Pressure Lubricating System. By 1918, Gulborg's invention significantly simplified the process of lubricating trucks for the U.S. Army.
The standard and giant versions of the system were used to lubricate heavy construction equipment, while the junior version was dedicated to lubricating motorcycles only.
By 1922, Alemite introduced the Button Head fitting system, which was available in standard, giant, and junior versions. The standard and giant versions of the system were used to lubricate heavy construction equipment, while the junior version was dedicated to lubricating motorcycles only. By the late 1920s, consumer vehicles were equipped with an Alemite handheld grease gun and hose assembly as standard equipment, which encouraged car owners to lubricate their own automobiles.
By the beginning of the 21st century, Alemite designed a unique dual-leverage grease gun system, giving the controller the choice of high-volume or high-pressure delivery of lubricants to grease fittings. In 2005, Alemite introduced the very first 14.4-volt cordless grease gun. Out of a growing demand for efficiency and the need for operators to have access to real-time data in today's digital age, Alemite unveiled the first 20-volt lithium-ion grease gun in 2014. This device featured a multi-functional display that showed remaining cartridge and battery levels, as well as the amount of grease the gun dispensed.