Advanced AVT® includes an integrated damper spring at the base of the impact bolt engineered to absorb impact vibrations from the drill bit.Advanced AVT® includes a vibration absorbing housing with a spring loaded back handle and housing which moves independently of the motor and hammer mechanism effectively isolating more vibration away from the user.Advanced AVT® includes an air actuated counterbalance that directs air pressure from the crank and barrel room into the counterbalance cylinders to move counterweight pistons in the opposite direction of the hammer mechanism to effectively reduce vibration.Advanced Anti-Vibration Technology (AVT®) is a synchronized, three-component system that more effectively reduces vibration resulting in a low 5m/s2.of impact energy to handle the most demanding applications Powerful 11 AMP motor delivers 8.4 ft.lbs.It is ideal for a range of trades including masons, concrete contractors, demolition contractors, plumbers, electricians, sprinkler installers, and general contractors seeking a best-in-class rotary hammer. The HR4013C is engineered for a range of concrete applications including drilling/coring through-holes for pipes, setting larger anchors, securing tilt-wall supports, small chipping applications, and more. An added feature is the option of lock-on or trigger-activated in the “chipping only” mode, with a push button start/stop control for more convenient operation. (11.4 Joules) of impact energy, 20% more than the previous model for faster drilling. The powerful 11 AMP motor delivers 8.4 ft.

The result of the enhanced AVT® is a category-leading vibration rating of 5m/s².

It is engineered with enhanced Anti-Vibration Technology (AVT®), a synchronized three-component system for significantly less vibration. The 1-9/16” AVT® Rotary Hammer (model HR4013C) has 45% less vibration and 20% more impact energy than the previous model.

Sds max rotary hammer drill