Quote:
Originally Posted by Stormin Mormon[_10_]
On 6/20/2014 7:00 PM,
The SDS bits have a shaft that's pressed, hard
to explain. I doubt they would fit a regular
chuck. Anyone know?
..
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No, SDS drill bits have special machining at the base of the shank. But, because the SDS chuck is a standard size, for drill bits smaller than 10 mm, the shank is larger in diameter than the drill bit itself.
Other than that, they're ordinary masonry drill bits and I expect you could probably fit one into a 3/8 or 1/2 inch Jacobs chuck if you weren't too concerned about how well they fit. Certainly, you could slip some 10 mm plastic tubing over the SDS end, and then put that into a Jacobs chuck.
Like this:
The SDS Carbide Tipped Drill Bit ~ Concrete Fastening Systems
The machined slots is where the torque is applied to the bit. The shallow ovals is where a ball bearing rides on each side of the bit. When you turn the collar on the SDS chuck, those ball bearings tighten up in their slots and hold the bit steady as well as prevent the bit from falling out of the SDS chuck if you hold the drill in a downward orientation. The SDS bit can still move back and forth in the chuck even when the chuck is rotated to lock the bit in place.