To browse a further range of over 25,000 products please visit our trusted supplier here - ToolBank. The 1/4" hex drive came about when they added them to the cordless world to supplement drill/drivers, thus more or less skipping the corded world. To greatly simplify, AC electric motors work best at constant speed and torque, outside of that there is more current flowing through the cable than the power rating indicates - they're taking power from the mains at some points and actively giving it back at others. En el momento que empieza a necesitar más fuerza salta el modo impacto: tac tac tac tac tac, y a base a golpecitos de par va introduciendo el tornillo sin el menor esfuerzo por nuestra parte, que es la ventaja del atornillador de impacto frente a los de no impacto: el par es mayor pero no te dobla las manos, de hecho podrías sujetar el taladro con una mano, e incluso con dedos y no te dobla la mano ni salta la broca sobre el tornillo porque resbala: cero esfuerzo. I'm surprised that this is the only corded impact driver I could find as it's such a good piece of kit.

On the face of it, odd: when you have greater power available, why manufacture something with half the torque? I would just like to add that I have a rather large collection of cordless Drills and their batteries from NiCad to Lithium from the earliest days of this technology. The corded hammer drill I bought 25 years ago is still working as it did when I bought it, the cordless I bought then is useless now. Achetée 120 €, je pense qu'au vu de la qualité de fabrication je vais la garder très longtemps et donc je suis extrêmement satisfait de cet achat.Have used it relentlessly when building my storage unit which needed some big bolts and screws, never let me down. I also have corded drills and a corded screwdriver that I have had for more than forty years and they still work, so old the corded driver has bits and shrouds for sloted head screws (remember those? About the only corded impact driver I have seen is this one by Makita, I always think they are for use in a production environment. An impact driver is the ultimate non-constant load, you only need to hear the banging in operation to appreciate that.

As the bit stops turning, a spring is loaded, once that load reaches a certain point, the spring releases and twists the hammer around to strike the anvil and add a bit of extra ooomph to the bit. The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products. On an SDS hammer, the hammer action and the rotation are generally seperate, so you can have one without the other, but most manufacturers recommend not using a chuck adapter in hammer mode.Home Depot has at least 18 offerings in corded impact drivers up to 3/4" but only one, the Makita, has a hex socket. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average.