It can also come in handy to release bits locked into the material. This switch is usually located just above the trigger and reverses the bit’s rotation to create a smooth finish. Reverse FunctionĪll corded power drills have a reverse function. While a drill with high rpms can drill more quickly, a model with a lot of torque can use larger bits and drill through harder materials more efficiently. The slower the drill speed, the greater the torque. Speed is important as it relates to torque, which is the twisting force of a drill. Most drills have variable speed (VSR) triggers that allow the operator to adjust the speed. Low-end corded drills operate at a single top speed while better-quality corded drills typically offer three to four different settings ranging in speed from 200 to 2,000 rpm. Rotation speed refers to how many full revolutions the drill bit will make per minute. Drills that generate a lot of torque can be difficult to use one-handed and thus come with handle attachments that allow the user to operate the drill with both hands. Torque is essential when drilling holes through materials such as metal and masonry. The higher the torque, the easier it is for the bit to cut through the material. Torque, measured in pounds-feet, determines the drill’s twisting power. While power is important, torque is also a crucial factor. The more powerful the motor, the more torque the drill produces, and the easier it will drill through material. A corded drill with a 5-amp motor, for example, has a max output of 550 watts (5 amps x 110 volts = 550 watts). To determine how powerful a drill’s motor is, multiply the motor’s amp rating by the power supply’s maximum power output. While the most powerful corded drills draw from a 20-volt rechargeable battery, corded drills can access a 110-volt electricity supply for as long as the unit is connected to the power source.Ĭorded power drill motors are rated by amps. Power is what separates corded drills from their cordless cousins. Massive 1/2-inch models are often used by professionals due to their heavy-duty construction and ability to handle larger drill bits. This means a 3/8-inch chuck allows you to use a 1/2-inch bit with a 3/8-inch shank.Ī drill with a 3/8-inch chuck size is large enough to handle most home projects. Keep in mind that most bits use a slightly smaller shank than the actual size of the drill bit. The size determines the maximum diameter drill bit shank a chuck can hold. For power drills, chucks come in three sizes: 1/4-inch, 3/8-inch, and 1/2-inch. Chucks usually use a locking key to grip the shank end of a drill bit. The chuck is the clamp at the business end of the drill that holds the bit in place. Characteristics such as size, weight, chuck size, and rotation speed also play a significant role in how well a drill performs. And while the axiom “the more power, the better” does hold true with corded drills, it’s not the only thing to consider. When it comes to power tools, most users focus on the motor’s size, and corded drills are no exception. Photo: What to Consider When Choosing the Best Corded Drill BEST HAMMER DRILL: Tacklife 1/2-Inch Electric Hammer Drill.BEST LIGHTWEIGHT: BLACK+DECKER Corded Drill, 5.2-Amp, 3/8-inch (DR260C).UPGRADE PICK: Meterk 7.0 Amp Corded Hammer Drill.BEST VALUE: Genesis GD38B Variable Speed Reversible Electric Drill.RUNNER UP: PORTER-CABLE Corded Drill, 6-Amp, (PC600D). BEST OVERALL: DEWALT DWD115K 8 Amp VSR Drill Kit.Below, you’ll discover why these picks are some of the best on the market. The best corded drill is a useful tool for home projects and an essential in the workshop. While the top cordless drill maxes out at 300 watts and requires a periodic battery charge, the best corded drill will produce nearly 900 watts, generating significantly more torque. Drilling 1/2-inch holes in hardwood, burrowing through steel: those feats require the power of a corded drill. Despite the advancements in cordless drill battery technology, the best ones aren’t powerful enough to do the job.
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