Hitachi DH40MRY
The owner's manual states that it weighs only 15.0 lbs. This thing just felt too heavy to be 15 lbs., so checked it. When I checked the weight without the depth rod on on my electronic postal scale, it read 17 lbs. 11 oz. I doubled checked it on my bathroom scale and it weighed 18.0 lbs.In terms of performance, it does truly live up to its claim of low vibration and low noise level. At the maximum speed setting, I drilled 5/8" holes 6" deep in concrete at half a minute each. I ran it side by side a Milwaukee 5346-21 1.75" rotary hammer and I could definitely feel the Hitachi's noticeably lower vibration ... # Patented User
Vibration Protection (UVP) Technology for 56% less full-load tri-axial vibration to
significantly reduce vibration transfer to the user # 2 Modes of operation- hammer drilling & hammer only- for flexibility within a range of applications # 7.7 ft/lbs of impact energy for26% faster drilling and best-in-class material removal # 9.2 Amp motor and 950 watts of input power for increased productivity # Optimized striking for more efficient transmission of power # Electronic variable speed to protect softer materials (such as brick) or to produce rapid results at full speed # Idle strike restrictor to prevent no-load activation and additional wear on the tool # Dust-proof structure to guard internal components from
harmful debris as well as grease leakage # Constant speed control for steady performance, even under a variable load # Extended wear carbon brushes for 50% longer use than
traditional brushes # Auto-stop indicator for routine maintenance checks and longer tool-life # Needle-pin slip clutch to protect tool gears and the safety of the user # Variable lock mechanism for 12-angle positions and a quick release system for simple bit changes # Soft, non-slip elastomer grip handle for improved comfort and control # Adjustable side handle for maneuverability in tight spaces # Top-mounted depth gauge for drilling accuracy Counterweights and Dampers reduce vibration by 56% 7.7 Ft.-Lbs. of Impact energy ... »»
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