Description
Milwaukee 3771-20 M18 FUEL STRIKER Hammer Chisel – Tool Only
Cut the air hose without sacrificing hitting power using the Milwaukee 3771-20 M18 FUEL™ STRIKER™ Cordless Hammer Chisel (Tool Only). Built specifically for automotive service technicians, fleet mechanics, and heavy machinery specialists who already own M18™ batteries, this bare tool replaces cumbersome long-barrel pneumatic air hammers for mobile roadside service and bay work.
Driven by a POWERSTATE™ brushless motor, the STRIKER™ delivers 7 Joules of impact energy, rivaling the performance of pneumatic air hammers hooked to 145 PSI shop lines. It features Milwaukee's patented battery isolation system, which insulates battery terminals from intense percussive shock to prevent loose connections. The .401" quick-change twist chuck works seamlessly with standard air hammer bits, while the 3-mode speed selector and featherable variable-speed trigger allow precise starts on delicate pins before ramping up to 3,000 BPM for stubborn suspension teardowns.
Key Features:
- True Pneumatic Replacement: Packs 7 Joules of blow energy to match long-barrel pneumatic air hammers running at 145 PSI.
- Bare Tool Flexibility: Adds heavy-hitting automotive demolition power to your existing Milwaukee M18™ battery platform.
- Patented Battery Isolation Cradle: Dampens percussive shock waves to keep battery pack connections secure and extend cell life.
- Industry-Standard .401" Twist Chuck: Delivers fast, one-handed bit changes while locking standard .401" chisel bits securely.
- 3-Mode Digital Speed Control: Offers 2,500 BPM, 3,000 BPM, and a smooth ramp-up mode to dial in the exact strike cadence.
- Featherable Variable-Speed Trigger: Gives complete throttle control across all modes to seat punch tips without wandering.
- Integrated LED Work Light: Projects clean, shadow-free illumination across suspension components and dark undercarriages.
Specifications
| Specification | Details |
| Brand | Milwaukee Tool |
| System / Platform | M18 FUEL™ (18V Lithium-Ion) |
| Model / MPN | 3771-20 |
| UPC | 045242767342 |
| Power Source | Cordless (Tool Only / Bare Tool) |
| Impact Energy | 7.0 Joules (Matches 145 PSI pneumatic air hammers) |
| Blows Per Minute (BPM) | 0 – 3,000 BPM |
| Operating Modes | Mode 1: 2,500 BPM / Mode 2: 3,000 BPM / Mode 3: Smart Ramp-Up |
| Chuck Type / Size | Quick-Change Twist-Lock Chuck for .401 in. Round Shank Bits |
| Motor Type | POWERSTATE™ Brushless |
| Battery Compatibility | Works with all Milwaukee M18™ REDLITHIUM™ Batteries (XC5.0 Resistant Recommended) |
| Tool Length | Approx. 11.8 in. (300 mm) |
| Tool Weight (Bare) | Approx. 6.8 lbs (3.08 kg) |
| Warranty | 3-Year Limited Tool Warranty |
Frequently Asked Questions
Does this bare tool come with a battery and charger?
No. The 3771-20 is a bare tool designed for users who already own Milwaukee M18™ REDLITHIUM™ batteries and chargers. If you need a complete kit with an oil-resistant XC5.0 battery, charger, and chisel bits, select kit model 3771-21.
Which M18 batteries are best suited for the 3771-20?
While compatible with any M18 battery, Milwaukee strongly recommends paired use with M18 REDLITHIUM XC5.0 Resistant batteries (such as 48-11-1855R) to withstand automotive solvents, brake cleaner, and motor oils while providing optimal runtime and balance.
Can I use standard air hammer bits with this cordless tool?
Yes. The STRIKER™ uses an industry-standard .401" round shank twist-lock chuck, allowing full compatibility with standard .401" pneumatic chisels, ball joint separators, punches, and rivet cutters.
How does Mode 3 (Ramp-Up) work?
Mode 3 starts the striking mechanism at a slower cadence so you can precisely seat your chisel or punch bit against the workpiece. Once the trigger is held, the tool smoothly ramps to full power to knock out the component without walking.
How does this compare to traditional pneumatic air hammers?
The 3771-20 delivers 7 Joules of striking force, matching the real-world material removal rate of long-barrel air hammers running at 145 PSI, but eliminates compressor maintenance, airline pressure drop, and trailing hoses.
Product Specifications
category_bullets: |
Powerstate brushless motor delivers 7 joules of impact energy, matching the performance of leading pneumatic tools Cordless design eliminates the hassle of air hoses and compressors while maintaining full pneumatic speed |
selling_points: |
✔ 7 Joules of Power: Delivers pneumatic striking force to tackle stubborn suspension and demolition work ✔ Hose-Free Freedom: Cordless design removes air hoses so you can work anywhere without restrictions |
