Makita 70lbs. Advanced AVT Breaker Hammer with 1-1/8 In. Hex, 4pc Steel, Premium Cart - HM1812X3

Makita 70lbs. Advanced AVT Breaker Hammer with 1-1/8 In. Hex, 4pc Steel, Premium Cart - HM1812X3

The new 70 lb. AVT Breaker Hammer (model HM1812) is engineered to hit like an air hammer, but with less noise and vibration. It has a powerful 15 AMP motor that delivers a full 53.9 ft. lbs. (73.8 Joules) of impact energy, so contractors get hard-hitting performance. Users also benefit from less noise and lower vibration than an air hammer and zero hassle with an air hose and compressor. The HM1812 features the latest Advanced AVT Technology, a synchronized three-component system that more effectively reduces vibration. The internal mechanical counterbalance system, vibration-absorbing housing and fixed movement handles are engineered for significantly less vibration during concrete breaking applications.

 Features

• Hits Like Air Without the Vibration
• Efficient 15 AMP motor with improved hammer mechanism delivers 53.9 ft. lbs./72.8 joules of impact energy to handle the most demanding applications
• Advanced AVT is a synchronized, three-component system that more effectively reduces vibration in varying conditions resulting in a low 6.5m/s2
• Advanced AVT provides a mechanical counterbalance system which greatly reduces vibration
• Advanced AVT provides a vibration absorbing housing
• Hits Like Air Without the Vibration
• Efficient 15 AMP motor with improved hammer mechanism delivers 53.9 ft. lbs./72.8 joules of impact energy to handle the most demanding applications
• Advanced AVT is a synchronized, three-component system that more effectively reduces vibration in varying conditions resulting in a low 6.5m/s2
• Advanced AVT provides a mechanical counterbalance system which greatly reduces vibration
• Advanced AVT provides a vibration absorbing housing

What our Experts Think

• Versatile 2‑in‑1 Yard Power: Combines a brushless power head with both a 13″ string trimmer and blower — ideal for trimming, edging, and cleanup around yards and gardens.

• Brushless Efficiency: Makita’s 18V LXT brushless motor delivers up to 7,000 RPM on the trimmer and strong blower performance (~438 CFM, 111 MPH), giving pro‑level power with cordless convenience.

• Tool‑Less Attachment System: Lever‑style lock makes swapping attachments quick and simple without extra tools — expanding future versatility with other compatible attachments (sold separately).

• Speed & Control: High/Low speed button plus variable‑speed trigger let you tailor power and runtime to the task at hand.

• Cordless Advantage: No gas, oil mixing, or pull starts — making it cleaner, quieter, and easier to maintain than gas alternatives.

• Included Kit Value: Comes with a 4.0 Ah battery and charger, giving ready‑to‑go performance straight out of the box.

Q&A

Q: What is this Makita breaker hammer kit?
A: A 70 lb. advanced vibration control breaker hammer that accepts 1‑1/8" hex bits and includes a premium hammer cart, four steel bits, and a hex wrench for heavy‑duty demolition.

Q: How powerful is it?
A: Features a 15 AMP motor delivering 53.9 ft‑lbs (72.8 J) of impact energy and up to 870 blows per minute for tough concrete and masonry breaking.

Q: What vibration control does it have?
A: Advanced AVT uses a mechanical counterbalance, vibration‑absorbing housing, and rubberized handles to significantly reduce vibration for user comfort and productivity.

Q: What accessories are included?
A: Kit includes two self‑sharpening bull point bits, two flat chisels (all 1‑1/8" hex), a premium hammer cart, and a hex wrench.

Q: What features help durability and maintenance?
A: Includes soft start, no‑hammering‑when‑idling function, LED power/service lights for diagnostics, automatic brush cut‑off, and a long 16.4 ft power cord with integrated guide.

Q: What jobs is this tool best for?
A: Designed for concrete demolition, slab breaking, foundations, sidewalks, and heavy construction demolition tasks.

Maintenance Tips

• Clear debris after use: Wipe down the hammer and bit holder to remove concrete dust and debris — this helps prevent buildup that can affect performance.

• Inspect power cord: Regularly check the cord and plug for cuts or wear; a damaged cord can lead to power loss or hazards.

• Check brushes: Watch the service LED and replace carbon brushes when worn to maintain motor efficiency and avoid commutator damage.

• Grease bit shank & holder: Periodically apply light grease to the bit shank and tool holder interface to reduce wear and ease bit changes.

• Tighten fasteners: Ensure all housing screws and handles remain snug to minimize vibration‑related loosening.

• Protect storage: Store bits and the breaker in a dry, clean environment — moisture accelerates corrosion on steel chisels and internal parts.