Published at Saturday, August 25th 2018. by Effie Hensley in Impact Driver.
BPM stands for "blows per minute". This is the number of screws that will be driven into a surface in 60 seconds. This is also another factor that should not be taken lightly. The higher the number of blows the better; this will determine the time that you will take to cover a particular area either drilling holes or screwing. The recommended capacity of blows is 2500 and above.
The DEWALT DC825KA 18v impact driver comes with a dependable one hour charger, two 18v XRP batteries, and a heavy-duty kit box for additional security and convenience. The tool is also backed by DEWALT's good name, their one year free service contract, and a three year factory warranty on the tool.
The most important thing to consider when it comes to choosing a powerful impact driver is its torque. To put it simply, torque is the strength and power of your power tool. Torque is measured in pounds-per-inch or in.-lbs. This is the pressure (in pounds) that your impact motor puts out per inch. So, if you're looking for a powerful impact, look for one with the highest in.-lbs. of torque. There are quite a few construction tool manufacturers that make them with high torque, including brands like Bosch, Ridgid, Makita, and DeWalt. I would consider any impact drill with 1400 or more in.-lbs. of torque as heavy duty.
If they're too tight or rusted or otherwise stuck, use a breaker bar to knock em loose, then move over to your powered impact driver to make short work of the rest. Then grease everything up, and screw them right back on.
When they first came out years ago, impact drivers were very popular in Japan but it took a while for Americans to realize what a terrific advantage impact drivers have over an electric drill when it comes to driving long screws into wood, especially decking. American companies like Porter Cable caught on to the idea and started competing with impact drivers offered by overseas companies. The idea for impact drivers was born long ago with the inventions of (1) the impact wrench, used in every automotive garage, and (2) the hammer drill used to power masonry bits into concrete and other extremely hard materials.
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