Milwaukee Gen 4 M18 Fuel Hammer Drill Review

David Smith

When it comes to power tools, Milwaukee has been a household name, and their latest offering, the Gen 4 M18 Fuel Hammer Drill , takes the game to a whole new level. In this comprehensive review, we’ll delve into the intricacies of these tools, exploring the features that set them apart and why they are a must-have for any serious DIY enthusiast or professional.

In-Depth Exploration

Milwaukee Gen 4 M18 Fuel Hammer Drill (Model #2904-20)

Milwaukee has truly upped the ante with the Gen 4 Hammer Drill. Let’s break down the enhancements:

Specification Improvement
Power Boost 1000rpm increase in high speed
Torque Surge 200 in-lbs increase, reaching 1400 in-lbs
BPM Overhaul 1000bpm boost for efficient drilling
Thermal Range Upgrade Extended thermal range for high-demand tasks
Compact Design Maintains the same length with a slight weight drop
Chuck Upgrade Improved bit retention and durability
Added Features LED light at the base, durable belt hook, removable side handle

The Autostop feature steals the spotlight, preventing over-rotation during bind-ups, ensuring safety and efficiency.

User Experience

Having tested these tools on real projects, I can attest to their exceptional performance. The lightweight ergonomics make them a joy to handle, even during prolonged use. The Autostop feature on the hammer drill is a game-changer, adding a layer of safety that sets Milwaukee apart from the competition.

Milwaukee Gen 4 M18 Fuel Hammer Drill
Milwaukee Gen 4 M18 Fuel Hammer Drill

Evolution of Power

  1. First Glimpse: Milwaukee M18 Fuel Hammer Drill’s journey from strength to compactness.
  2. Gen 4 Dynamics: Unveiling the powerhouse with upgraded features.

Performance Overhaul

Power and Speed

Mode Gen 3 (2804) Gen 4 (2904)
Low Speed 550 RPM 500 RPM
High Speed 2000 RPM 2100 RPM
Hammering Rate 32,000 BPM 33,000 BPM
Max Torque 1200 in-lbs 1400 in-lbs

Key Takeaway: Gen 4 not only matches but exceeds Gen 3 in speed, torque, and hammering rate, promising a significant boost in drilling speed and power.

Milwaukee M18 Fuel Hammer Drill
Milwaukee M18 Fuel Hammer Drill

AutoStop Mode

  • Innovation Unleashed: Milwaukee’s AutoStop mode goes beyond kickback control.
  • Operational Flexibility: Toggle on/off to balance productivity and safety.
  • Smart Indicator: Easily switch between modes with a simple trigger sequence.

Maximum Capacities

Material Capacity
Spade Bit (Wood) 1 1/2 inches
Auger Bit (Wood) 1 1/2 inches
Hole Saw (Wood) 3 1/2 inches
Screw Diameter (Wood) 5/8 inches
Twist Bit (Metal) 1/2 inches
Twist Bit (Masonry) 1/2 inches

Insightful Capacities: Gen 4 showcases versatility in handling various materials.

Design and Build

Size and Weight

  • Consistency: Maintaining the 6.9-inch length with a slight weight increase.
  • Battery Inclusion: With a 5.0Ah battery, the total weight reaches approximately 4.9 pounds.

    Milwaukee M18 Fuel Hammer Drill
    Milwaukee M18 Fuel Hammer Drill

Milwaukee One-Key Models

  • Tech Integration: Explore One-Key options for personalized control and monitoring.

Additional Highlights

  • Rugged Construction: All-metal chuck and mechanical clutch for durability.
  • Efficiency Boost: Brushless motor for improved performance and longevity.
  • Practical Additions: LED light, all-metal belt clip, and compatibility with all Milwaukee M18 batteries.

Pricing and Options

Kit Prices

  • Inclusive Kits: Both drill driver and hammer drill kits include two 5.0Ah batteries and a charger.
  • Bare Tools: Individual pricing for those opting for specific tools.

Milwaukee 2906 M18 Fuel Hammer Drill w/One-Key

  • Smart Investment: One-Key version offers enhanced control.
  • Pricing Dynamics: Slight price difference between the drill driver and hammer drill versions.

Release Date

  • Market Arrival: Look for these dynamic tools at your favorite Milwaukee retailer starting August 2022.

FAQs – Unveiling Insights

  1. What sets Gen 4 apart from Gen 3?
    • Gen 4 boasts increased speed, torque, and a revolutionary AutoStop mode, providing a superior drilling experience.
  2. Can AutoStop mode be deactivated?
    • Yes, enjoy operational flexibility by toggling the AutoStop mode on and off as needed.
  3. What materials can the Milwaukee M18 Fuel Hammer Drill handle?
    • From wood to metal, the drill showcases impressive capacities, including masonry.
  4. Is the Gen 4 edition compatible with previous M18 batteries?
    • Yes, the Gen 4 edition is compatible with all Milwaukee M18 batteries, ensuring seamless integration.
  5. What is the significance of Milwaukee One-Key models?
    • One-Key models offer advanced control and monitoring features for a personalized user experience.
  6. How does Gen 4 enhance user safety?
    • AutoStop mode reduces unnecessary shutdowns, enhancing productivity while minimizing the risk of injury.
  7. What is the pricing difference between Gen 3 and Gen 4?
    • Gen 4 comes at a slightly higher price, justified by the significant performance upgrades and added features.
  8. Are there combo kits available?
    • Yes, there’s a combo kit featuring the Gen 4 hammer drill and impact driver for comprehensive tool coverage.
  9. When will the Gen 4 models be available in the market?
    • Look for these impressive tools at your favorite Milwaukee retailer starting August 2022.
  10. What makes the Milwaukee M18 Fuel Hammer Drill a top-tier choice?
    • The Gen 4 edition combines power, versatility, and innovation, making it a standout choice for professionals and enthusiasts alike.


Milwaukee M18 Fuel Hammer Drill Gen 4 stands as a testament to relentless innovation. With enhanced power, smart features like AutoStop mode, and a robust design, it’s poised to redefine your drilling experience. Embrace the future of power tools with Milwaukee’s latest offering.

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