When should you use an impact driver vs. a drill?
Watch this video and learn the differences between an impact driver and a power drill, plus what applications each is best suited for. Resident tech expert Kurt Repsher walks you through the differences and the pros and cons of impact drivers and power drills, so you can choose the right tool for the task at hand. Subscribe to our channel to see more exclusive how to videos and tips from the pros.
WHAT IS A POWER DRILL?
A power drill is an indispensable tool that is used in a wide variety of construction, home improvement and facility maintenance tasks. A power drill is adjustable-speed tool designed to drill and drive in fasteners. Drills are equipped with a chuck to hold the drivers, tools & bits. Round or hex tools & bits can be used.
WHAT IS AN IMPACT DRIVER?
An impact driver is designed to drill and drive in long screws or large fasteners. Impact drivers are made with quick release shanks that accept all one-quarter-inch hex driver bits, allowing for quick change of tools. Impact drivers use rotational force to drive in the screw or fastener, and are designed to deliver quick bursts of power (up to 50 'impacts' per second) when resistance is sensed. The compact design of impact drivers allows for lighter weight and greater accessibility in tight spaces.
WHAT ABOUT HAMMER DRILLS OR 'HAMMER DRILL MODE'?
Like standard power drills, hammer drills are equipped with a chuck. In addition, hammer drills rotate a drill bit while hitting it forward in a fashion similar to how a hammer would deliver force (hence, the name 'hammer drill'). A hammer drill, or the hammer drill mode some power drills are equipped with, should be utilized when drilling holes in stone, concrete or masonry. DO NOT use a hammer drill or hammer drill mode to drill holes or drive fasteners into drywall, thin wood, or soft materials, as the hammering action can lead to damaging the surface of these more delicate materials. If your hammer drill has a 'drill only' mode, that mode should be engaged when you are driving fasteners or performing applications outside of drilling holes into masonry, concrete, or stone.
BRUSHED VS. BRUSHLESS MOTORS
While a vast amount of power drills are equipped with brushed motors, those that are considered professional grade are equipped with brushless motors. A power drill equipped with a brushed motor will still deliver years of performance – on average lasting 1,000-3,000 hours – ideal for DIY and hobbyist applications. However, a brushless motor on average will deliver over 10,000 hours of performance, as there are no brushes to wear down with each use. In addition to extended tool life, there are several other benefits to brushless motors:
higher motor efficiency: the reduced heat, sound, and vibration generated with a brushless motor allows more power to the rotors and generates less friction between the rotor and stator
safer operation: reduced friction reduces risk overheating and sparking
lighter weight: less components equate to a lighter weight motor, and often a lighter weight tool
greater return on investment: while tools equipped with brushless motors cost more than those with brushed motors, the extended tool life and better overall performance pays for itself over time
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