What does SDS mean on a drill bit?
SDS stands for "Slotted Drive System" or "Slotted Drive Shaft." It is a type of chuck system used primarily in rotary hammer drills and hammer drills. The SDS system was developed by Bosch in the 1970s and is designed for heavy-duty drilling and chiseling in materials such as concrete, masonry, and stone.
Key Features of SDS Drill Bits
Slotted Shank: SDS drill bits have a slotted shank that fits into a corresponding chuck, allowing for secure, quick, and tool-free bit changes.
Hammering Action: The design allows the bit to move back and forth within the chuck, enabling efficient hammering action for faster and more effective drilling in tough materials.
Reduced Slippage: The slotted design reduces the risk of bit slippage, providing better control and safety during use.
Durability: SDS bits are built to withstand the high-impact forces of hammer drills, making them more durable than standard drill bits.
Types of SDS Systems
SDS-plus: The most common type, typically used for lighter-duty applications. It has a shank diameter of 10 mm and is suitable for drills with smaller motors.
SDS-max: Used for heavier-duty applications, with a larger shank diameter of 18 mm, making it suitable for more powerful drills.
SDS-top: Less common, with a shank diameter of 14 mm, used for medium-duty applications.
Applications
Concrete Drilling: SDS bits are ideal for drilling into concrete, reinforced concrete, brick, and masonry.
Chiseling: SDS systems can also be used with chisels for light demolition and surface removal tasks.
Overall, SDS drill bits are designed for high-performance, heavy-duty drilling tasks, offering enhanced efficiency, ease of use, and durability.