These drill machines are entirely different from the above and it has pneumatic hammering mechanism with a piston and cylinder to produce higher hammering force.
These drills have a Special Direct System (SDS) instead of a normal drill chuck, which enable key less fixing of drill bit in the machine (just push it in will get locked)
Rotary hammers are mainly used by construction professionals and contractors for drilling and breaking of Masonry/Concrete/RCC/High-strength Concrete surfaces. These drill machines come in 2 or 3 modes, in 2 mode drill you can use Rotary drilling and Hammer drilling functions, and in 3 mode drill, you have a hammer only mode and an additional function called chiselling/chipping can be used for breaking and demolition of concrete/masonry surfaces.
4.Drill Driver: These are similar to rotary drills, but having an additional torque control clutch mechanism for controlling the tightness of screws/bolts.
Drill drivers are mostly used for screwing on wood and metal surfaces and it can do normal drilling work.
Drill drivers mostly available in Battery powered(cordless) version for convenience.
5. Bench drills: These are conventional drill machines mounted on a bench or floor. it has a belt drive and standard chuck. Used for heavy duty drilling on metals and wood.