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Whether you’re a hobbyist who likes to construct things out of wood or metal, or if you want to do some house repairs or improvements without calling a handyman, a drill is practically a necessity in your home, whether you want to drill a hole or just drive in a few screws. Nowadays, there are cordless drills that have impressive battery power and battery life that can compete with corded models. And you have the convenience of being able to work away from a power outlet!
We’ll look at some features of cordless drills, and look at the various specifications that distinguish one from another. There are things like battery voltage, drill speed, torque, and clutch settings, that are worth noting before making a purchase. There are also other details like the drill’s weight and size that can figure into your decision. Let’s examine some of the specs on the Best Reviews Guide list of the best cordless drills!
Drills that use a brushed motor: “Brushes”, in the context of a DC motor, are electrical contacts on the fixed part of the motor. They rub, or “brush”, against rotating commutators, that alternate in polarity so as to turn the motor shaft. This is a simpler, cheaper motor design. But, due to the friction, such a motor generates heat and has a shorter lifetime. An example is the DeWalt 20 V Max Cordless Drill/Driver Kit.
Drills that use a brushless motor: Instead of mechanically switching polarity to get the motor shaft to turn, a brushless motor employs alternating current to vary the magnetic field. This way, the motor shaft can rotate without even touching the electromagnetic coils around it. Such a motor can achieve greater speeds while producing less friction. So, you’ll see that a drill with a brushless motor will cost more, but will be able to achieve higher speeds. You can also work with it longer each time without it getting hot, and the tool will last longer overall. An example is the Makita 12V Max CXT Brushless Cordless Driver-Drill Kit. The motor is controlled electronically to conserve the battery’s charge. That way, it will last 50% longer when fully charged, as compared to a brushed motor model.
We went over some of the features of cordless drills. They’re awesome for all sorts of jobs around the house, whether you have to insert a screw into plasterboard, concrete, or wood. For occasional jobs, you can settle for a cordless drill with a brushed motor. If you’re a professional, a brushless drill probably is more in order. Check out the Best Reviews Guide list. You’re guaranteed to find something that suits your DIY needs!
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