Difference Between Hammer Drill Impact Driver Drill

Jan 07, 2013  It s time to clear up any confusion you had about the true difference between an impact driver and a drill. Tune in and listen carefully. Shop for.

HowStuffWorks "What's the difference between a hammer drill and an impact driver?"

In a reply to a recent deal post that mentioned both a hammer drill and impact driver, Steve left us a comment asking about the differences between the two.

Mark Williams December 20, 2009 pm. Marc, So now I see the utility of the impact driver. I may have to pick on up, however my only drill right now is a NICAD.

Ever wonder what makes an impact driver different from a regular drill driver. This should clear things up.

Photo Credit JGI/Blend Images/Getty Images; You May Also Like. What Is an Impact Driver Used For. First there was the screwdriver, then the electric screwdriver, then.

The basic difference between a hammer drill and an impact driver is the direction from which they each exert additional force on their twisting action. A hammer drill exerts greater force directly into the bit as it hits the material being drilled, while an impact driver increases the force being delivered perpendicular to the bit.

If you re using a hammer drill, picture someone slamming the back of the drill harder into surface being drilled. That s the direct force; it s why a hammer drill can feel almost like a jackhammer in your hands. In contrast, an impact driver has a special mechanism inside of it that pushes a small anvil against the rotating mechanism on the inside from the side. This perpendicular pressure has been described as increasing the force on a wrench around the screw, as opposed to just pounding the screw in with more force directly on its head.

Specifically, an impact driver has three components a hammer drill doesn t: strong compression spring, weight also called an impact mass and the T-shaped anvil. When you first start drilling, the spring rotates at the same speed as the weight, which abuts the anvil. However, as resistance increases the weight begins to rotate more slowly. While this happens, the motor is rotating at its original speed, which keeps the spring rotating at the same original speed. At this moment, the spring, which sits just behind the weight, is rotating more quickly than the weight. The disparity of these rotating speeds allows the faster rotating spring to exert greater pressure against the slower rotating weight, which in turns pushes on the anvil. The anvil then pushes against the drill s bit and fastener from the side. The increased perpendicular pressure increases the torque and provides you with greater control when you use an impact driver.

Potato patato what s the different right. Well depending on the tool and what job you want to do there is going to be a lot of difference among these tools.

Jan 16, 2012  - Neil and Mark discuss the various difference in features and benefits between combi drills, drill drivers and impact drivers.