Background and Identification
Demolition hammers work when the engine vibrates a chisel or other tool attached to the end of the hammer, while the user balances the hammer so that the chisel bores into a surface. The chisel breaks up the surface, creating pieces that can be more easily disposed of. This handheld demolition hammer uses AVT (Anti Vibration Technology) to reduce the vibrations felt by the operator with counterbalancing weights inside the hammer and a casing that isolates the handles from the rest of the hammer. AVT design is based on earthquake engineering principles. Exposure to vibrations can be damaging over time, depending on the length of time and the intensity of the vibrations. Vibrations of 5 m/sec² are harmful after 8 hours. 10 m/sec² is harmful after 2 hours, and 20 m/sec² is harmful after only 30 minutes, according to the Makita website.
Technical Specifications
- AMPS : 15
- Power Type : Corded
- Cord Length (ft) : 16.4'
- Overall Length : 23-1/2"
- Net Weight : 26.2 lbs.
- Impact Energy (ft.lbs.) : 14
- Impact Energy (Joules) : 19 J
- Blows Per Minute (variable speed) : 1,100 - 2,250 BPM
- No Load Speed (variable speed) : 130 - 260 RPM
- Max. Capacity (concrete drilling) : 2"
- Optimum Range (concrete drilling) : 3/4" - 1-9/16"
- Max. Capacity (concrete drilling w/ core bit) : 6-1/4"
- Vibration Control : Yes
- Vibration (m/s²) : 9
- Bit Type : Accepts SDS-MAX
- Bind-Up Control : No