What is the difference between a cordless hammer drill and a cordless pneumatic hammer drill ?
As opposed to normal cordless hammer drills, the SDS or cordless pneumatic hammer drill pushes the drill bit forward using a mechanized piston. This pneumatic action provides a much larger drill bit movement and allows for much larger and deeper hole drilling even in concrete and stone type material. Professional cordless pneumatic hammer drills are starting from 18 V (Makita a.o.) to 24 Volt up to 36 V (Bosch a.o.). Most cordless rotary hammers allow SDS drill bits and chisels to be fitted. Bosch’s SDS-plus which gives the name to SDS is certainly the most widely used fitments system on cordless hammer drills.
