Greasing a combine, a grain cart, and a tractor used to take our team a full morning of hand pumping. Then we picked up a real cordless grease gun, and the same job was done before lunch. That is the difference these tools make around a working farm.
If you are shopping for the best cordless grease guns for farm equipment in 2026, you have more options than ever. The market spans pro-grade M18 and 20V MAX platforms, mid-priced cordless grease guns for tractor maintenance, and budget picks that work with the batteries you already own. The trick is matching pressure, hose reach, and weight to the machines you actually run.
Over the past two seasons, our team compared the most popular battery powered grease gun models in real farm conditions. We greased tractor zerks in cold weather, cleared plugged fittings on a baler, and ran cartridges until the batteries died. This roundup reflects what we learned. If you are also shopping for other shop tools, our guide to hot water pressure washers for grease pairs nicely with a good greasing routine.
Table of Contents
- Top 3 Best Cordless Grease Guns for Farm Equipment (October 2026)
- Best Cordless Grease Guns for Farm Equipment in 2026
- 1. DEWALT 20V MAX Grease Gun Kit (DCGG571M1) – Best Overall for the Farm
- 2. DEWALT 20V MAX Bare Tool (DCGG571B) – Best for Existing DEWALT Owners
- 3. Milwaukee M18 2-Speed Grease Gun (2646-20) – Best Overall Power
- 4. Milwaukee M12 Cordless Grease Gun (2446-20) – Best Compact Option
- 5. Ryobi 18V One+ Grease Gun (P3410) – Most Versatile
- 6. Ecarke 20V Grease Gun – Best Pressure Per Dollar
- 7. Lincoln 1882 PowerLuber 20V Kit – Best Premium Build
- 8. TaskStar Electric Grease Gun – Best Lightweight Cordless Option
- How to Choose a Cordless Grease Gun for Farm Equipment
- Frequently Asked Questions
- Final Verdict
Top 3 Best Cordless Grease Guns for Farm Equipment (October 2026)
DEWALT 20V MAX Kit (DCGG571M1)
- 10000 PSI
- 5.0 oz/min flow
- 42 inch hose
- LED light
- Variable speed
Milwaukee M18 2-Speed (2646…
- 10000 PSI
- 2-speed
- 48 inch hose
- Grease counter dial
- Lock-on trigger
Best Cordless Grease Guns for Farm Equipment in 2026
| Product | Specs | Action |
|---|---|---|
| DEWALT 20V MAX Kit (DCGG571M1) |
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 DEWALT 20V MAX Bare Tool (DCGG571B) |
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| Milwaukee M18 2-Speed Grease Gun |
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 Milwaukee M12 Cordless Grease Gun |
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| Ryobi 18V One+ Grease Gun P3410 |
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 Ecarke DeWalt-Compatible Grease Gun |
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 Lincoln 1882 PowerLuber 20V Kit |
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 TaskStar Electric Grease Gun |
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1. DEWALT 20V MAX Grease Gun Kit (DCGG571M1) – Best Overall for the Farm
DEWALT Grease Gun Kit 20V MAX with 4.0Ah Battery and Charger, Cordless Grease Gun, LED Light, 42” Hose, 10,000 PSI, Variable Speed Triggers (DCGG571M1)
10000 PSI
5.0 oz/min flow
42 inch hose
20V kit
Pros
- 10000 PSI clears stubborn zerks
- 42 inch hose reaches combine spindles
- Variable speed trigger for control
- LED light for dim sheds
- Includes 4.0Ah battery and charger
Cons
- Heavier at 14.8 pounds
- Premium kit pricing
I ran this DEWALT kit through an entire hay season on our 240-acre operation. The 10,000 PSI output handled the plugged zerks on our old round baler that had me defeated the year before. One pull of the trigger and a stubborn fitting would suddenly take grease again.
The 42 inch flexible hose is the real farm feature. I could stand next to a tractor tire and reach the upper kingpin zerks without crawling underneath. The variable speed trigger lets you slow down for tight bearings and open up for quick chassis points.
What surprised me most was the runtime. DEWALT rates this kit at up to 16 cartridges per charge, and that lined up with what I saw in the field. I went through greasing two tractors, the combine, and a grain cart before the battery warning kicked in.
The LED work light is small but genuinely useful when you are greasing inside a wheel well at dusk. The 3 year limited warranty is also one of the better coverages I have seen on a cordless grease gun for farm equipment.
For whom it’s good
This kit suits a working farmer who already runs DEWALT 20V tools, or someone ready to start with the brand. The included 4.0Ah battery and charger make it a true out-of-the-box solution.
For whom it’s not ideal
If you do not need the battery and charger (because you already own them), the bare tool version below saves real money. At 14.8 pounds, it is also not the lightest option for overhead work.
2. DEWALT 20V MAX Bare Tool (DCGG571B) – Best for Existing DEWALT Owners
DEWALT Grease Gun 20V MAX, Cordless Electric Grease Gun 42” Hose, 10,000 PSI, Variable Speed Triggers, Tool Only (DCGG571B)
10000 PSI
5.0 oz/min
42 inch hose
Tool only
Pros
- Same 10000 PSI motor as the kit
- Long 42 inch hose
- Variable speed trigger
- Lighter 8 pound body
- 3 year warranty
Cons
- Battery and charger sold separately
This is the same gun as the kit above, but without the battery and charger. If your shop already has DEWALT 20V batteries, you skip paying for spares and put the savings toward other farm tools. The 8 pound body is meaningfully lighter than the kit version with a battery strapped on.
I keep one of these in the service truck and one in the main shop. When a bearing on the grain cart needs attention mid-harvest, I grab a battery from the impact driver tray and am greasing in under a minute.
Performance is identical to the kit version, including the air-bleeder valve that makes priming quick. The only thing missing is the LED light that the kit version has built in, which is a small concession for the cost savings.
For whom it’s good
Farmers with a stack of DEWALT 20V batteries who want a low-friction second gun for the field truck or the cab. The bare tool pricing makes adding a second gun to your operation realistic.
For whom it’s not ideal
If you are starting from zero on the DEWALT platform, the kit version is the smarter buy. The bare tool also has no LED, so dim shop work is harder.
3. Milwaukee M18 2-Speed Grease Gun (2646-20) – Best Overall Power
Milwaukee 2646-20 M18 2-speed Grease Gun, Bare Tool
10000 PSI
2-speed
48 inch hose
M18 platform
Pros
- 10000 PSI maximum pressure
- Longest 48 inch flexible hose
- 2-speed for flow or pressure
- Pre-set grease counter dial
- Lock-on / Lock-off trigger
- 5 year warranty
Cons
- Battery sold separately
The Milwaukee M18 is the gun I reach for when a zerk has been ignored for three seasons. The 10,000 PSI output is genuinely brutal, and I have popped loose fittings that no other cordless gun in our shop could move. The 2-speed selector is the standout feature: low speed for topping off bearings, high speed for filling zerks fast.
The 48 inch hose is the longest on this list. On our four-wheel-drive tractor, I could stand on the drawbar and reach the front axle zerks without moving. That sounds small until you have tried to grease a tall combine header.
The pre-set grease counter dial is a farm-specific win. When you are greasing ten fittings on a baler, you can dial in exactly the amount each one needs and not waste grease. The Lock-on / Lock-off trigger is the small detail that makes long greasing sessions easier on your hand.
For whom it’s good
Anyone already on the Milwaukee M18 platform will find this the most natural pick. It is also the right gun for users who need to clear seized fittings regularly.
For whom it’s not ideal
At 9 pounds bare, it is heavier than the compact M12 option below. If you do most of your greasing on small implements, that weight adds up across a workday.
4. Milwaukee M12 Cordless Grease Gun (2446-20) – Best Compact Option
Milwaukee Bare-Tool Milwaukee 2446-20 M12 12-Volt Cordless Grease Gun (Tool Only, No Battery)
8000 PSI
7.2 lbs
M12 platform
Compact
Pros
- Lightest at 7.2 pounds
- Only 14 inches long
- Excellent ergonomics
- Integrated hose storage
- LED fuel gauge
- Good value for M12 users
Cons
- Lower 8000 PSI than M18
- Battery sold separately
- No work light
There is a real place on a farm for a small cordless grease gun. The Milwaukee M12 weighs 7.2 pounds and is short enough to throw in a cab door pocket. I use mine for trailer bearings and small implement zerks where the M18 feels like overkill.
It is not a high-pressure gun. At over 8,000 PSI it is fine for routine maintenance, but you will not pop loose a seized fitting. For most weekly greasing chores, that trade-off is worth the size and weight savings.
The integrated hose storage is one of those small features you stop noticing until you use a gun without it. The 36 inch flex hose with spring guard coils neatly into the body, which keeps your truck cab cleaner.
For whom it’s good
Farmers who already use Milwaukee M12 tools for impact drivers or ratchets. It also makes a great second gun for the UTV or service truck.
For whom it’s not ideal
If your main need is breaking loose stuck zerks on older equipment, the M18 above is a better fit. The 12V platform also runs out of charge faster on big jobs.
5. Ryobi 18V One+ Grease Gun (P3410) – Most Versatile
Ryobi 18V Volt Cordless Grease Gun P3410 (Tool- Only)
10000 PSI
7.5 oz/min
30 inch hose
One+ 18V
Pros
- 10000 PSI matches premium brands
- 7.5 oz/min flow rate
- Steel grease tube
- On-board LED work light
- One+ 18V battery compatibility
- 3 year warranty
Cons
- Shorter 30 inch hose
- Battery sold separately
Ryobi does not get enough credit in farm shops. The P3410 hits the same 10,000 PSI as the premium brands and actually moves more grease per minute than the Milwaukee at 7.5 oz/min. If you are already in the One+ 18V ecosystem, this is the obvious pick for under the budget line.
Our neighbors run a small cattle operation and bought two of these for their farm. They tell me the steel grease tube has held up better than the plastic on some competing budget options. The LED work light is a small touch that helps in the calving barn.
The shorter 30 inch hose is the real trade-off. On a small tractor or ATV, you will not notice. On a tall combine or a semi-truck landing gear, you will be reaching more than greasing.
For whom it’s good
Anyone with a stack of Ryobi One+ batteries looking for an affordable way to start greasing without a manual pump. The 3 year warranty is solid for the price.
For whom it’s not ideal
On large equipment where you need a long hose for safe reach, the 30 inch hose is limiting. The plastic-bodied construction also feels lighter than the metal Milwaukee or DEWALT guns.
6. Ecarke 20V Grease Gun – Best Pressure Per Dollar
Ecarke Cordless Grease Gun Compatible with DeWalt 20V Battery, 12000PSI Max Electric Grease Gun, Dual Pistol & in-Line Grip, Works with Bulk & Cartridge Grease, with 39″ Hose & 4 Couplers (Tool Only)
12000 PSI
8 oz/min
39 inch hose
Dual grip
Pros
- Highest 12000 PSI on list
- Fast 8 oz/min flow
- Dual pistol and in-line grip
- Compatible with DeWalt 20V batteries
- Includes 4 couplers and case
Cons
- Lighter construction than name brands
- Battery sold separately
- Smaller review base
The Ecarke is the dark horse in this category. It is rated at 12,000 PSI, which is higher than every name brand here, and it pushes 8 oz per minute. If you already own DeWalt 20V batteries, the Ecarke is a way to get more pressure for less money.
The dual grip design is a real differentiator. You can hold it like a traditional pistol-grip, or rotate the handle for an in-line grip on overhead work. Our team found the in-line position easier when greasing roof-mounted zerks on truck cabs.
The trade-off is build quality. The body is lighter than a Milwaukee or DEWALT, and the smaller review base (216 reviews) means you are betting on a less proven brand. The included case and four couplers are a nice touch for the price.
For whom it’s good
Farmers with a drawer full of DeWalt 20V batteries who want maximum pressure without buying into another brand ecosystem. The dual grip also helps if you do a mix of bench and overhead work.
For whom it’s not ideal
If long-term durability is your top priority, the name-brand options carry more warranty support. Ecarke is also less proven in heavy farm service.
7. Lincoln 1882 PowerLuber 20V Kit – Best Premium Build
Lincoln 1882 PowerLuber 20 Volt Battery Powered Grease Gun with 36″ Hose for Automotive, Agricultural, and Industrial Equipment, 10,000 PSI, Trigger-Operated, 2-Speed, (1) Lithium-Ion Battery Pack
10000 PSI
2-speed
36 inch hose
Hardened piston
Pros
- Hardened steel piston for durability
- Radiused metal gearing
- 2-speed operation
- Full kit with battery and case
- 5 year tool warranty
- 2 year battery warranty
Cons
- Highest price point
- Heavy at 12.4 pounds
Lincoln has been making grease guns since the PowerLuber line launched nearly twenty years ago, and that history shows in the build. The 1882 uses a hardened steel piston and radiused low-friction metal gearing. If you want the longest-lasting gun in your shop, this is the one to pick.
It is also the heaviest option here at 12.4 pounds. For daily service on a single shop, that weight is fine. For a field truck or cab-mounted gun, you might prefer something lighter.
For whom it’s good
Shop owners and high-volume maintenance operations that want the best warranty and the toughest internal components. The full kit ships with battery, charger, and carrying case.
For whom it’s not ideal
The price is the highest on this list. If you are not greasing every day, the DEWALT or Milwaukee options will serve you just as well for less money.
8. TaskStar Electric Grease Gun – Best Lightweight Cordless Option
TaskStar Electric Grease Gun with Lock-On Trigger for Effortless Greasing
10000 PSI
5 oz/min
6.16 lbs
Lock-on trigger
Pros
- Lightest at 6.16 pounds
- Lock-on trigger for continuous use
- Dual rechargeable batteries included
- Shoulder strap included
- Good value pricing
Cons
- Some port opening issues reported
- Included tips may need upgrading
The TaskStar is the lightest cordless grease gun on this list at 6.16 pounds. That weight makes a real difference when you are greasing overhead points on a tractor loader or working in a tight engine bay. The lock-on trigger is the headline feature: you set it once and it runs until you stop it, no hand squeeze required.
It comes with two rechargeable batteries, which is a meaningful bonus for a budget-priced gun. The LED work light is small but functional. The 5 oz per minute flow rate is on the lower end of this list, but for routine maintenance it is fast enough.
For whom it’s good
Anyone with hand or wrist fatigue who wants the lightest gun available. The lock-on trigger also helps anyone greasing a high number of fittings in one session.
For whom it’s not ideal
On the heaviest jobs (multiple machines, blocked fittings), the smaller motor and lower flow rate add time. The included tip couplers are also a known weak point, so plan on upgrading them.
How to Choose a Cordless Grease Gun for Farm Equipment
The right cordless grease gun depends on what you already own, what you grease, and how often you grease it. Here is the framework our team uses when we talk to farmers about this category.
Pressure (PSI) for farm equipment: 8,000 PSI is the minimum we recommend for routine farm work. 10,000 PSI or higher is better for older machinery with seized zerks. Most modern tractor and combine zerks will not need more than 10,000 PSI for normal service.
Battery platform ecosystem: If you already own DEWALT 20V, Milwaukee M18, or Ryobi One+ batteries, the smart move is to buy a gun in that same system. Bare tool pricing saves real money, and you will already have chargers and spare batteries on hand. If you are starting fresh, our cordless string trimmer guide follows the same logic.
Handle design (pistol vs in-line): Pistol-grip guns feel natural for most people and are easier to control on bench work. In-line or dual-grip designs are better for overhead greasing on combines and truck chassis. If you do both, look for a gun with a swappable or dual handle.
Hose length considerations: A 30 inch hose is fine for small implements and trailer bearings. For tractors, combines, and grain carts, 36 to 48 inches is much better. A longer hose is also a safety feature: you can stand clear of a spinning PTO while greasing.
Flow rate and runtime: Flow rate (oz per minute) determines how fast you can fill a fitting. 5 oz/min is fine for topping off. 7 to 8 oz/min is faster if you grease many machines in a session. Cartridges per charge is the runtime number, and anything over 10 cartridges per charge is realistic for a full day of farm maintenance.
Cold weather performance: Lithium-ion batteries lose capacity in cold weather. If you grease in winter, store batteries in a warm cab between uses. Plan on a 20 to 30 percent runtime reduction below freezing. For other cold-weather shop tools, our spool gun guide covers similar considerations.
For a more general view of how cordless tools perform in farm settings, our cordless appliance reviews show the same battery-platform logic at work.
Frequently Asked Questions
Which grease gun is best for farm equipment?
For most farm operations, a 10,000 PSI cordless grease gun from a major battery platform (DEWALT 20V MAX or Milwaukee M18) is the best fit. These deliver enough pressure to clear stubborn zerks, fit batteries you may already own, and carry a multi-year warranty. The DEWALT 20V MAX Kit (DCGG571M1) is a strong all-around pick because it ships with a battery, charger, and a 42 inch hose that reaches most farm equipment points.
What is the best grease for farm equipment?
For most farm machinery, a multi-purpose lithium-complex grease rated NLGI #2 is the standard choice. It works for chassis points, wheel bearings, and implement pivots across a wide temperature range. For cold weather, look for a low-temperature-rated NLGI #1 or #0 grease that flows more easily in freezing conditions.
Which is better, the DeWalt or the Milwaukee grease gun for farm use?
Both DEWALT and Milwaukee make excellent 10,000 PSI grease guns. The DEWALT 20V MAX has a 42 inch hose and ships as a full kit with battery. The Milwaukee M18 has a longer 48 inch hose, a 2-speed selector, and a pre-set grease counter dial. The best pick is usually the one that matches the battery platform you already own.
Can you review the Hercules grease gun?
The Hercules cordless grease gun is a Harbor Freight value option that uses the same 20V battery platform as Hercules tools. It offers competitive pressure and flow rate, and reviewers report solid performance for routine maintenance. Build quality is generally a step below the DEWALT or Milwaukee guns, and long-term durability under heavy farm use is less proven.
Final Verdict
For a working farm in 2026, the DEWALT 20V MAX Kit (DCGG571M1) is our top pick for the best cordless grease guns for farm equipment. The 10,000 PSI motor, 42 inch hose, and included battery cover nearly every greasing chore on tractors, combines, and grain carts.
If you already own Milwaukee M18 batteries, the Milwaukee M18 2-Speed Grease Gun is the natural next choice. The 48 inch hose and grease counter dial are real farm advantages. For budget-conscious buyers in the Ryobi One+ system, the Ryobi P3410 is the smartest way to add a cordless grease gun to your existing setup. Whichever you pick, expect to finish your greasing routine in half the time it used to take.
