Background and Identification
Makita is a Japanese power tool manufacturer that was founded in 1915. It is a leading brand of professional-grade tools. This company produces cordless tools, power tools, petrol equipment, and batteries for the cordless tools. The tools themselves range from wrenches and drills to chainsaws and lawnmowers. This rotary hammer can be used to break through concrete, and should be handled carefully. The user should read and follow all safety guidelines given by the manufacturer.
This rotary hammer uses AVT (Anti-Vibration Technology) to reduce shaking and improve the efficiency of the hammer. It does this with a counterbalancing weight located inside the hammer. As the hammer impacts the surface, the counterbalance weight moves around to provide an opposing force to the push of the ground on the hammer. This reduces the vibrations produced by the hammer significantly, making it easier and safer to operate. This 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. AVT helps the efficiency of the hammer, but it also makes it less damaging for the operator.
Technical Specifications
- Impact energy: 8.0 J
- Input Wattage: 1000 W
- Impacts per minute: 1450 - 2900 ipm
- No Load Speed: 250 - 500 rpm
- Max in concrete: 40 mm
- Vibration K factor: 1.5 m/sec²
- Net weight: 6.8 - 6.9 kg
- Vibration (Chiseling) : 4.5 m/sec²
- Vibration: (Hammer Drilling): 5 m/sec²