The new HR5212C is engineered with enhanced Anti-Vibration Technology, a synchronized three-component system for significantly less vibration.
Enhanced Anti-Vibration Technology
Makita AVT is an internal counterbalance system that greatly reduces vibration for increased user comfort and greater efficiency. The HR5212C features an enhancement to this already innovative technology with the new synchronized three-component system:
• Air Actuated Counterbalance directs air pressure from the crank and barrel room into the counterbalance cylinders to move counterweight pistons in the opposite direction of the drive piston, which actively reduces vibration.
• Vibration-Absorbing Housing features a spring-loaded main handle and upper housing that move independently of the motor and drive mechanism, engineered to isolate vibration away from the user. This vibration-absorbing housing effectively isolates the rear handle and side handle – an industry first.
• Integrated Damper Spring at the base of the impact bolt is engineered to absorb impact vibrations from the drill bit.
"Many rotary hammers have a detached spring-loaded handle as their primary means of reducing vibration, which appear to be just updates to an existing tool having limited effect on vibration reduction,” said Livingston. “Compare this to our three-component AVT system, which is advanced technology that is part of the overall engineering of the tool, isolating vibration not only at the rear handle but also at the side handle as well, an industry first. The result is industrial performance with significantly less vibration.”
More Power, Less Vibration
The new HR5212C 2” AVT Rotary Hammer has one the lowest vibration ratings in its class. The powerful 15 AMP motor delivers 19 Joules (14 ft. lbs.) of impact energy for faster drilling. An added feature is the option of lock-on or trigger-activated in the "chipping only" mode, with a push button start/stop control right in front of the rear handle for more convenient operation.
Additional features include soft start for more control and greater accuracy, a torque-limiting clutch, and constant speed control that automatically applies additional power to the motor to maintain speed under load. The HR5212C offers 2-mode operation for "chipping only" or "hammering with rotation", as well as 24 bit angle settings and a one-touch sliding chuck for quick bit changes.