Milwaukee Tool is one of the most trusted brands for high-performance grease guns used by automotive technicians and industrial maintenance crews alike.
This buying guide provides an in-depth look at the key features, types, and models across Milwaukee’s grease gun lineup. We’ll examine how grease guns are evaluated and tested, along with top recommendations for home, shop, and professional use.
Whether you need occasional greasing capability or a heavy-duty workhorse for daily lubrication tasks, this guide will help you select the best Milwaukee grease gun for your needs and budget.
Types of Milwaukee Grease Guns
Milwaukee offers a wide range of grease gun options including manual lever-action models, pistol grip grease guns, high pressure grease guns, and cordless battery powered grease guns.
Manual lever grease guns provide a simple, low-cost solution for basic greasing tasks. Pistol grip models allow easier pumping and are suitable for most common applications.
For heavy-duty use, Milwaukee’s high pressure grease guns can output over 10,000 PSI to handle large equipment. Cordless grease guns like the M12 and M18 models offer unmatched freedom and power without any hoses, generating up to 10,000 PSI.
Milwaukee also provides specialty grease guns like right-angle and extended reach models for enhanced accessibility.
Manual Lever-Action Grease Guns
Manual lever-action grease guns from Milwaukee provide a budget-friendly option for basic greasing tasks. A lever mechanism builds pressure inside the barrel to force grease through the hose. Simple and straightforward, these are ideal for small home or shop jobs. Just note that frequent large greasing tasks can cause hand fatigue.
Pistol Grip Grease Guns
Pistol grip grease guns offer more power and easier pumping than manual models. You simply pull the trigger to build pressure and deliver grease. The pistol grip fits comfortably in your hand. Milwaukee’s pistol grip guns handle most common greasing jobs.
High Pressure Grease Guns
Where piston grip models max out around 6000 PSI, Milwaukee’s high pressure grease guns deliver over 10,000 PSI. This extreme pressure allows you to push grease into large fittings and heavy equipment with ease. They are the go-to for heavy-duty daily use.
Cordless Battery Powered Grease Guns
Milwaukee’s cordless grease guns provide unmatched freedom and power. Models like the M12 and M18 Grease Guns use Milwaukee batteries to generate up to 10,000 PSI for big greasing tasks. No hoses or grease cartridges to deal with. Cordless operation allows access to hard-to-reach spots.
Specialty Grease Guns
Specialty Milwaukee grease guns include right-angle, low-profile, and extended reach models. Right-angle versions allow access to tight spots at 90 degrees. Low-profile designs fit where space is limited. Extended reach models grease far away fittings.
Key Features to Consider
When selecting a Milwaukee grease gun, key features to consider are the pressure rating in PSI, grease capacity, hose length, cordless vs air/manual operation, comfort features, coupler types, ease of loading grease cartridges, and battery life for cordless models.
Matching these features to your specific greasing needs and applications allows you to choose the right Milwaukee grease gun.
Prioritize power output, capacity, hose reach, operation method, ergonomic design, coupler compatibility, quick loading, and long battery life.
Grease Capacity
Look for larger grease capacities if you’ll be doing frequent greasing. This reduces downtime for refills. Milwaukee’s manual guns hold 14-16 oz grease, while cordless models hold over 20 oz grease cartridges.
Maximum Pressure Rating (PSI)
Higher PSI ratings like 10,000+ PSI allow you to lubricate large, stubborn fittings with ease. Lower PSI around 6000 is fine for smaller jobs. Match the pressure rating to your typical greasing needs.
Ergonomic Comfort Features
Given the repetitive motion of greasing, comfort features reduce fatigue. Pistol grip handles, padded grips, and easy-pull triggers minimize strain. Lever-action models with bearings reduce resistance.
Flexible vs Rigid Grease Coupler
Flexible whip hoses easily access fittings at odd angles. Rigid couplers provide greater pressure but less flexibility. Choose the right coupler style for your application.
Extensions/Nozzles for Accessibility
Extension tubes and specialty nozzles allow you to grease hard-to-access fittings. Use straight, angled, or flexible extensions to reach tight spots. Nozzle tips direct flow.
Ease of Loading Grease Cartridges
Look for quick loading designs that allow dropping a pre-filled cartridge into the barrel for fast, mess-free reloads. This improves efficiency on big jobs.
Battery Life (Cordless Models)
Longer battery life reduces downtime spent changing/charging batteries. Milwaukee’s M18 cordless grease gun provides up to 16 cartridges per charge. M12 runs about 8 cartridges.
Hose Length
Longer hoses from 18-48 inches provide the reach needed to access fittings without excessive repositioning. Opt for a longer hose if greasing large equipment.
Flow Rate
Faster flow rates (measured in ounces per minute) allow you to dispense grease quickly to speed up jobs. Milwaukee grease guns offer variable flow rate triggers.
LED Light
Integrated LED lights are extremely helpful for illuminating dark greasing areas. This makes it easier to see fittings and confirm proper lubrication.
Two-Speed Settings
Dual-speed triggers provide flexibility. Use high-speed for fast grease flow and lower speed for precision dispensing. Adjust pressure as needed.
Milwaukee Grease Gun Lines
Milwaukee’s grease gun lineup includes basic manual models, mid-range pistol grip grease guns, and professional high pressure and cordless grease guns.
The manual lever guns provide a budget-friendly option for DIYers. Pistol grip models add more power for common workshop and garage uses.
Milwaukee’s pro-level high pressure and cordless grease guns deliver extreme power and performance for heavy equipment lubrication and all-day use.
Professional/Flagship Models
Milwaukee’s M12 and M18 cordless grease guns sit atop the lineup with extreme 10,000+ PSI pressure and the freedom of cordless operation. They also offer the most accessories and configurations.
Entry-Level Models
Basic manual lever and pistol grip grease guns provide affordable options for DIYers doing occasional greasing. They lack power and features of pro models but get the job done on a budget.
Standout Innovations
Milwaukee’s brushless motors, RedLithium batteries, and ONE-KEY tracking provide pro-level power, runtime, and fleet management capabilities. Other highlights include tool-free cartridge loading and high-flow pump systems.
How We Evaluate Milwaukee Grease Guns
To evaluate Milwaukee grease guns, we assess power output, flow rate, ease of use, hose flexibility, coupler types, priming and loading, battery life, durability, and value.
We methodically test pressure and flow across nozzle tips in real-world scenarios. We also check for potential leakage points under pressure. For cordless models, we measure battery runtimes during continuous greasing.
We survey professional user reviews for feedback on long-term heavy use. Our hands-on testing reveals the best Milwaukee grease guns for power, performance and usability.
Handling Ease of Use
Our testers assess handling and control during real-world use. We look for comfort, convenient triggers/pumps, and accessibility. Ease of changing grease cartridges is also considered.
Testing Pressure Output
We methodically test pressure output across nozzle tips to verify PSI ratings. This ensures the grease gun can adequately lubricate fittings based on its specs and design.
Checking Leakage Points
Any grease gun will be tested with pressurized grease to check for leaks at seals, fittings, and connections. Leaks make a grease gun inefficient and messy.
Monitoring Battery Runtimes
For Milwaukee’s cordless grease guns, we test battery runtimes with periodic greasing until the battery is drained. This evaluates real-world runtime versus manufacturer estimates.
Assessing Durability
We subject grease guns to extensive use on vehicles and equipment to assess their durability. This reveals any weak points in terms of build construction, materials, or wear.
Surveying User Reviews
The perspectives of professional automotive and industrial technicians provide key insights into long-term performance, ease of use, and reliability. We survey reviews across the web.
Top Milwaukee Grease Gun Recommendations
When selecting the best Milwaukee grease gun for your needs, top recommendations include the M18 Cordless model for heavy duty use, the M12 Cordless version for medium duty applications, and the MLG Lever model for basic manual greasing tasks.
For affordable manual operation, the MLG lever-action grease gun outputs 10,000 PSI with smooth pumping. Focus on your typical greasing pressure needs and budget to choose among Milwaukee’s top-rated grease gun options.
Best Overall: Milwaukee M18 Cordless Grease Gun
M18 2-Spd Grease Gun With extreme 10,000 PSI pressure, a high-flow pump, and the convenience of cordless operation, the M18 delivers pro-level performance that can tackle the toughest greasing jobs all day long.
Best Cordless: Milwaukee M12 Cordless Grease Gun
Milwaukee M12 Cordless Grease Gun Providing the perks of cordless operation in a smaller 12V package, the M12 grease gun handles the most common greasing tasks with its 6000 PSI output.
Pros and Cons of Milwaukee Grease Guns
Key pros of Milwaukee grease guns are industry-leading power output up to 10,000 PSI, proven durability for daily professional use, cordless convenience and mobility, comfortable ergonomic designs, and flexible hoses for accessibility.
Potential cons are the higher cost of cordless models compared to basic manual grease guns, and their heavier weight. Cordless runtimes are also limited per charge.
Pros
- Powerful pressure output even on large fittings
- Excellent durability for daily professional use
- Cordless convenience and mobility
- Ergonomic comfort features reduce fatigue
- Flexible hoses improve accessibility
Cons
- Cordless models are heavy compared to manual grease guns
- Cost is higher than basic lever grease guns
- Limited battery runtime requires having spare batteries/charger
Grease Gun Accessories
Milwaukee offers a wide range of grease gun accessories including extension tubes for extended reach, flex hoses that bend for accessibility, specialty nozzles, coupler tips for different fittings, and carrying cases.
Accessories like extensions and flex hoses allow you to grease hard-to-reach fittings. Nozzle tips direct and control grease flow. Coupler types ensure compatibility with grease fittings. Carrying cases enable organized transport and storage.
Extension Tubes
Rigid and flexible extension tubes from 6-18 inches allow access to hard-to-reach grease fittings. Use them to extend your reach.
Flex Hoses
Flexible hoses bend to access fittings at odd angles where rigid couplers can’t reach. Great for tight spots.
Specialty Nozzles
Cone, needle, and flat nozzle tips provide concentrated grease flow or wider distribution as needed.
Coupler Types
Standard coupler tips fit most grease fittings. Specialty hydraulic flat and ball couplers adapt to specific fittings.
Carrying Cases
Belt holsters and hard cases protect grease guns and provide organized storage for accessories.
Usage and Maintenance Tips
Proper Milwaukee grease gun usage and maintenance involves selecting the right pressure/flow rate for the application, keeping the tool clean, recharging batteries fully, wiping excess grease off fittings, and following manufacturer guidelines.
Storing grease cartridges properly prevents contamination. Regular cleaning and inspection ensure optimal performance. Taking care of your Milwaukee grease gun will extend its working life.
Proper Filling and Priming
Pump grease until it flows freely with no air pockets. Don’t overfill the barrel. Wipe off grease after filling.
Storage and Cleaning
Store grease guns upright to avoid leakage. Clean exterior and fittings with a rag. Avoid harsh solvents.
Preventative Maintenance
Follow manufacturer guidelines for lubricating seals and o-rings. Inspect regularly for damaged seals/hoses.
Maximizing Battery Life
Only use Milwaukee RedLithium batteries. Fully recharge after each use for maximum battery lifespan.
Select Proper Pressure/Flow Rate
Use lower pressure for precision dispensing and higher flow for heavy greasing. Adjust as needed.
Keep Grease Gun Clean
Dirty grease guns can clog. Wipe off exterior grease and cap fittings when not in use.
Recharge Batteries Fully
Fully recharging after each use maintains battery capacity. Have spare batteries on hand for big jobs.
Wipe Off Excess Grease
Removing excess grease from fittings prevents contamination and mess. It also conserves grease.
Follow Manufacturer Guidelines
Refer to the user manual for proper operation, maintenance, storage, and troubleshooting.
FAQs
Q: How do I choose the right pressure rating?
A: Match the PSI to your typical greasing – small fittings only need ~6000 PSI, while heavy equipment may require 10,000+ PSI.
Q: What maintenance do grease guns require?
A: Follow manufacturer guidelines for lubricating seals. Inspect for leaks and damaged hoses. Keep exterior clean.
Q: Why choose Milwaukee grease guns?
A: Milwaukee is trusted for outstanding power, durability, and innovations like brushless motors and RedLithium batteries.
Key Facts
Milwaukee grease guns range from affordable manual models to high-performance cordless tools that can conquer the toughest lubrication tasks. Consider your pressure needs, grease capacity, features, and budget.
Here are the key facts about Milwaukee grease guns:
- Deliver up to 10,000 PSI of pressure for heavy duty greasing needs
- M18 cordless models offer unmatched power and convenience without hoses
- Clear barrel accessories let you visually check grease levels
- Pre-set grease counters allow dispensing precise amounts
- 48″ flexible hoses improve accessibility to fittings
- Onboard LED lights illuminate dark greasing areas
- 2-speed triggers provide precision flow control
- Brushless motors and RedLithium batteries optimize performance
- Suitable for automotive, industrial, agriculture, and construction uses
- Specialty models like right-angle grease guns access tight spaces
- Durable construction stands up to daily professional use
- Higher cost than basic manual grease guns but worth investment
- Proper maintenance improves lifespan – keep clean, inspect seals
With this guide’s help in identifying the best Milwaukee grease gun for your application, you can make an informed buying decision.