Milwaukee M12 GG-0 M12 Sub Compact Grease Gun Bare Unit

Greasing shouldn’t be the job that steals your afternoon. The Milwaukee M12 GG-0 is built for technicians and maintenance teams who need consistent lubrication pressure, clean handling, and the freedom to move from fitting to fitting without fighting a manual lever gun.

Powered by the M12 12V system, the tool delivers up to 562 bar max operating pressure, giving you the push you need for stubborn nipples and higher resistance points on agricultural machinery, plant equipment, HGV components, workshop machinery and general fleet maintenance.

Milwaukee’s design is all about keeping you moving. The air bleeder valve helps you prime quickly for fast flow, while the integrated hose storage and strap/shoulder loop reduce downtime between tasks. It’s also compact for its class at 355 mm length, making it easier to manoeuvre around cramped chassis rails, guards and linkage points.

Loading flexibility is a major win: the M12 GG-0 supports three way loading (bulk, cartridge and suction), with grease capacity suited to common service routines—400 ml cartridge or 473 ml bulk. That means fewer interruptions and less mess when you’re working through a full PM schedule.

For durability, Milwaukee integrates REDLINK overload protection, plus battery cell monitoring to optimise runtime and long term pack health. In real terms, you get dependable performance and the ability to dispense up to 7 cartridges per charge (battery dependent), which is ideal for site work where chargers aren’t always close.

This listing is the bare unit, making it ideal if you already run Milwaukee M12 batteries and chargers.

Key Features

• Max operating pressure: 562 bar

• Runtime: dispenses up to 7 cartridges per charge (battery dependent)

• Compact size: 355 mm length

• Three way loading: bulk, cartridge, suction

• Grease capacity: 400 ml cartridge, 473 ml bulk

• Air bleeder valve: quicker priming and flow

• REDLINK protection and battery cell monitoring for system durability

• Onboard fuel gauge + LED light

• Works with all Milwaukee M12 batteries

Specifications

• Voltage: 12V

• Max pressure: 562 bar

• Length: 355 mm

• Grease capacity: 400 ml cartridge / 473 ml bulk

• Hose supplied: 914 mm x 14.4 mm high pressure flex hose with spring guard

• Weight (EPTA) with battery: 3.2 kg (with M12 B4)

• Sound pressure level (Lpa): 54.5 dB(A)

• Sound power level (Lwa): 65.5 dB(A)

• Vibration level: < 2.5 m/s²

What’s Included

• Milwaukee M12 GG-0 Sub Compact Grease Gun (bare unit)

• 14.4 mm flex hose with spring guard (high pressure)

• Straight grease coupler

• Right angle grease coupler

• Strap

• Supplied in: no kitbox or bag

Not included: battery, charger