We used all of these considerations to compile an Ergonomics score for each. We weighed each hammer drill with the battery and drill bit in place, measured the vibration at the handle using a Benetech GM63A Vibration Meter, and asked our Cop Tool testers to give us feedback on the “feel” of each hammer drill when drilling both the cinder blocks and poured concrete. Speed, power and runtime are all very important considerations when selecting a rotary hammer, but if the tool is hammering your hands on the job, you’re less likely to work efficiently or accurately as the day drags on. It’s important to note that Makita uses two 5.0Ah batteries, so it should have had a little more juice than it’s competitors, but simply couldn’t drill an extra hole. With a 8/10, the winner of the Battery Runtime category was the Dewalt. Each did 12 more holes in the softer block concrete then we just did as many holes as possible in the poured concrete. We switched all 3 drills to a 1/2” diameter SDS-MAX bits for more user feedback and longer runtimes. However, it is surprising that the Dewalt was faster by 2 seconds with a higher impact energy.Īfter we ran each hammer drill through ten holes in our speed & power test, members of the CopTool team continued to test each hammer drill until the battery was dead. Nearly doubling the impact energy of it’s competitors, the specs alone determines the Speed & Power outcome. 10 holes at an average drill time of 19.94 seconds per hole.10 holes at an average drill time of 15.29 seconds per hole.10 holes at an average drill time of 17.06 seconds per hole.The time-code on our video footage was used to measure how long it took to drill each hole, determining precise start & finish times. We used a Bosch HDC200 dust collection attachment on our shop-vac to keep the silica to a minimum. We tested speed and power by seeing how quickly each rotary hammer was able to drill 10 holes 1″ holes through a 3-5/8″ thick cinder block. ![]() You may have different values on these categories depending on your needs and loyalties. Keep in mind, Special Features and Overall Value are opinionated categories. Each category was thoroughly tested and we’re confident in the outcomes. ![]() We’ve compiled our ratings into 5 categories, Speed & Power, Battery Run Time, Ergonomics, Special Features, and Overall Value. Just hammering into concrete continuously with no restraints or limitations was very calming. We’ve tried to cover each base and the decisions were unanimous. Ladies and gentlemen, boys and girls, and children of all ages.
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