Dewalt 20v Max Brushless Impact Driver Kit
To achieve this, an impact driver contains a spring, a “hammer,” and an anvil. This happens very quickly, typically more than 50 times per second, adding bursts of impact to the torque. Another important number is the rate at which the impact driver delivers an extra “blow” of power during use. Note that the manufacturer’s stated ipm is the tool’s “no load” ipm, meaning what it delivers when run in the air, not actually driving a screw. Lower-powered impact drivers generally deliver around 2,000 ipm, while more powerful tools might boast as much as 3,700 ipm.
This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information. We consult with innovators in the technology and design of tools to gain a broader grasp of where these products fit and how they work. At $109 for the bare tool, it offers 20V compatibility for the price of a 12V tool.
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For the second test, we tighten down the nuts to a predetermined setting using a Gearwrench G torque multiplier. We then see what torque the impact driver can successfully back off. We do this using 10 ft-lb (120 in-lb) increments until we land on the maximum “nut-busting” torque value. To measure torque we run two tests on a steel I-beam using Grade 8 hardened bolts, washers, and nuts.
Inexpensive DeWalt impact driver kits usually have a single 1.5Ah battery. The best offer two 4.0Ah batteries, and the difference is enormous. Individually, 4.0Ah batteries run about three times longer. With two, you’ve always got a spare while one is charging. If you’re saving money by buying a lower-quality battery to begin with, it’s worth investing in a higher-capacity spare when you can. Brushless motor for increased runtime and durability.
Compact and lightweight for hard to reach areas. LED light with 20 second delay after trigger release. Price dewalt accessories seemed too good, but it is on Walmarts site so I knew they would stand behind it if anything was wrong.