The Milwaukee 2446-20 M12 Cordless Lithium-Ion Grease Gun is a 12V cordless grease gun built for machinery lubrication, fleet service, farm equipment, and maintenance work. This tool-only grease gun delivers more than 8,000 PSI, includes a 36 in. flex hose with spring guard and grease coupler, and runs on Milwaukee M12 REDLITHIUM batteries sold separately.
The Milwaukee 2446-20 M12 Cordless LITHIUM-ION Grease Gun gives maintenance crews, mechanics, equipment operators, and service technicians a compact cordless option for high-pressure lubrication work. It delivers more than 8,000 PSI operating pressure for heavy machinery, cold weather lubrication, and clogged grease fittings, while the M12 battery platform keeps the tool portable for shop, field, and jobsite use.
Designed for one-handed use and long service routes, the 2446-20 measures 14 in. long and weighs 7.2 lbs. The onboard fuel gauge helps users monitor charge status, while integrated hose storage and a shoulder strap loop help reduce mess between lubrication points. The tool accepts cartridge, bulk, suction, and pump loading methods, making it useful for fleet maintenance, plant maintenance, agricultural equipment, construction equipment, and facility service work.
Milwaukee M12 12 Volt Lithium-Ion Cordless Grease Gun At a Glance
- M12 Cordless Power: Runs on Milwaukee M12 REDLITHIUM batteries for portable lubrication work.
- High Operating Pressure: Delivers more than 8,000 PSI, with the operator’s manual listing 8,150 PSI max operating pressure.
- Long Runtime: Dispenses up to 7 grease cartridges per charge when used with an M12 REDLITHIUM battery.
- 36 in. Flex Hose: Includes a high-pressure flex hose with spring guard and grease coupler.
- Air Bleeder Valve: Helps prime the grease gun for faster grease flow.
- Multiple Loading Methods: Supports cartridge, bulk, suction, and pump loading.
- Compact Design: 14 in. length and 7.2 lb tool weight support controlled one-handed operation.
- Onboard Fuel Gauge: Displays remaining battery charge to reduce work interruptions.
- Tool-Only Package: Battery and charger are sold separately.
Quick Specs
- Brand: Milwaukee
- Manufacturer Part Number: 2446-20
- UPC: 045242204731
- Power Source: Cordless
- Voltage: 12V DC
- Battery Platform: Milwaukee M12
- Battery Included: No
- Charger Included: No
- Max Operating Pressure: 8,150 PSI
- Flow Rate: 2.6 oz/min at 1,000 PSI
- Cylinder Capacity: 16 oz bulk / 14.5 oz cartridge
- Hose Length: 36 in.
- Tool Length: 14 in.
- Tool Weight: 7.2 lbs
- Operating Modes: Single-speed grease dispensing with cartridge, bulk, suction, and pump loading
Markets
- Fleet Maintenance: Useful for regular lubrication on trucks, trailers, buses, and service vehicles.
- Agriculture: Helps grease tractors, loaders, implements, bearings, and pivots in the field.
- Construction Equipment: Suitable for excavators, skid steers, lifts, compactors, and other jobsite machinery.
- Facility Maintenance: Supports routine service on mechanical systems, doors, conveyors, and equipment.
- Municipal Shops: Fits public works, parks, water departments, and road maintenance crews.
- Industrial Maintenance: Works for plant service teams maintaining bearings, fittings, and production equipment.
- Repair Shops: A practical cordless grease gun for mechanics and service technicians.
- Trade Schools: Useful for training programs focused on equipment service and preventive maintenance.
The Milwaukee 2446-20 gives buyers a compact M12 cordless grease gun that reduces manual pumping and helps keep lubrication work moving. Its high-pressure output supports demanding fittings, while the 36 in. flex hose helps reach grease points around equipment frames, linkages, axles, and guards. For teams already using M12 tools, this tool-only model is a practical way to add a cordless grease gun without buying another battery and charger.
This model is especially useful for users who need a grease gun that can move between shop work and field service. The air bleeder valve supports faster priming, the onboard fuel gauge helps manage battery use, and the integrated hose storage helps keep the hose under control between tasks. For commercial maintenance, farm service, and equipment repair, the Milwaukee M12 grease gun provides portable pressure, manageable weight, and broad M12 battery compatibility.
Milwaukee 2446-20 M12 12 Volt Lithium-Ion Cordless Grease Gun – Tool Only Features
- Powerful 12 V motor: delivers over 8,000 PSI max operating pressure
- Best in class run-time: dispenses up to 7 cartridges per charge
- Superior handle balance and ergonomics: only 14 in. long and 7.2 lbs
- Integrated hose storage and LED FUEL gauge: added user convenience and less down time
- Onboard fuel gauge: Helps you increase productivity and avoid interruptions
- Air bleeder valve: priming mechanism for quick flow
- M12 lithium-ion system: compatible with over 20 M12 lithium-ion tools for greater versatility in the workplace
- REDLITHIUM™ Battery Technology: Superior pack construction, electronics, and performance deliver more work per charge and more work over pack life than any battery on the market
- Maximum durability: backed by a 5 year warranty
- Up to 7 grease cartridges per charge
- Grease capacity: 14 oz cartridge, 16 oz bulk
- Three way loading: bulk, cartridge, and suction capable
Compatible Accessories / Works Well With
- Milwaukee M12 REDLITHIUM Batteries: Required for operation; battery sold separately.
- Milwaukee M12 Chargers: Required to charge M12 batteries; charger sold separately.
- Grease Couplers Rated 10,000 PSI or Higher: The manual specifies using accessories rated for at least 10,000 PSI.
- Low-Pressure Loader Fittings: Required for pump loading to avoid excessive pressure.
- 14.5 oz Grease Cartridges: Compatible with standard cartridge loading.
- Bulk Grease: Supports 16 oz bulk cylinder capacity.
- Shoulder Strap: The tool includes a shoulder strap loop; strap availability depends on package or accessory selection.
Milwaukee 2446-20 M12 12 Volt Lithium-Ion Cordless Grease Gun – Tool Only Includes
- (1) Milwaukee 2446-20 M12 Cordless LITHIUM-ION Grease Gun
- (1) 36 in. Flex Hose with Spring Guard
- (1) Grease Coupler
Milwaukee 2446-20 M12 12 Volt Lithium-Ion Cordless Grease Gun – Tool Only Specifications
- Brand: Milwaukee
- Manufacturer Part Number: 2446-20
- UPC: 045242204731
- Product Type: Cordless rechargeable grease gun
- Product Line: M12
- Power Source: Cordless
- Voltage: 12V DC
- Battery Platform: Milwaukee M12
- Battery Type: M12 REDLITHIUM lithium-ion battery, sold separately
- Battery Included: No
- Charger Included: No
- Speed Settings: 1
- Max Operating Pressure: 8,150 PSI
- Marketing Pressure Rating: More than 8,000 PSI
- Flow Rate: 2.6 oz/min at 1,000 PSI
- Cylinder Capacity: 16 oz bulk / 14.5 oz cartridge
- Loading Methods: Cartridge, bulk, suction, and pump loading
- Hose Length: 36 in.
- Hose Rating: 10,000 PSI
- Tool Length: 14 in.
- Tool Weight: 7.2 lbs
- Recommended Ambient Operating Temperature: 0°F to 125°F
- Handle Style: Pistol grip
- Housing Color: Red
- Certifications / Listings: UL listed for Canada and U.S.
- Package Type: Tool only
Milwaukee 2446-20 M12 12 Volt Lithium-Ion Cordless Grease Gun – Tool Only Warranty
- Milwaukee’s 5 Year Limited Warranty
Why Customers Choose the Milwaukee M12 12 Volt Lithium-Ion Cordless Grease Gun
Customers choose the Milwaukee 2446-20 because it combines cordless portability with the pressure needed for daily lubrication work. It is a strong fit for maintenance teams that need a grease gun for heavy equipment, fleet service, farm machinery, and facility repair without relying on manual pumping. The compact M12 platform also makes it easier to carry from fitting to fitting.
This cordless grease gun is also practical for users already invested in Milwaukee M12 tools. The tool-only configuration keeps the purchase focused on the grease gun, while the included 36 in. flex hose, onboard fuel gauge, and multiple loading methods support routine service work in the shop, on the jobsite, and in the field.
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