We explain the different types of SDS Drill Bit designs
The SDS model variations are easy to understand and I have explained them below.
The original SDS design was developed by Bosch in the 1970’s and is a quick release concept which enables the user to just insert the drill into a snap in clutch. The concept was designed to provide a more efficient system of delivering a hammer blow to the end of a drill bit whilst it was rotating but without have to impact on the chuck. Because of the machined hollowed out section in the shank end of the drill, the bit is able to move to and fro freely but within limits, when struck by the continuous hammer mechanism in the drill body. There are also two slots which are machined opposite one another to lock bit into position. This whole concept makes for a far more comfortable working environment for the user and less wear and tear in the chuck.