![cement drill bit sizes chart cement drill bit sizes chart](https://5.imimg.com/data5/SELLER/Default/2020/8/FS/NL/BA/5602264/drill-bit-all-size-photo.jpg)
They are all the same shank which is slotted and have curved recesses that fit into keyless chucks. SDS or SDS Plus (SDS+): SDS stands for Slotted Drive System, Spline Drive System or Schnell Drilling System bits. This type of hammer drill hammers up to 48,000 blows per minute and rotates 900 rpm to 2,500 rpm. This means that the striker does the hammering and the drill actually hits the end of the bit- metal against metal. Hammer drills that have Jacob's style chucks are referred to as a mechanical type hammer drill. They fit into Jacob's style chuck that requires a chuck key.
![cement drill bit sizes chart cement drill bit sizes chart](https://2.bp.blogspot.com/-0JZt2Y01F2Q/WnxuAKAjCCI/AAAAAAAAOYQ/QiBt9DiJSvcYOni6oj8rpimYLTnmjMk6QCK4BGAYYCw/s1600/picture-762434.jpg)
Straight Shank: The straight shank bit shank (the part that fits into the drill) is smooth and can be round or hex. Included below is a chart showing the minimum and maximum tolerance ranges for each size of concrete anchor.Ĭarbide bits that are designed for drilling holes for concrete anchors come in four styles that reflect the hammer drill that they if into. The ANSI standard that pertains to concrete bits is B212.15 and gives a range that finished diameters for rotary and concrete drill bits must meet. It was decided that a standard for the industry should be created and adhered to by all anchor and bit manufacturers. Confusion among customers resulted since different anchors were being used with different bits. This meant that carbide bits had to be manufactured and sold by a specific company. Many years ago, different manufacturers of anchors would manufacture anchors and bits to their own tolerances. The ANSI was founded in 1919 as a non-profit, private organization that acts primarily as a standards coordinator and approval body. ANSI stands for American National Standards Institute. It is also very important to use bits that meet ANSI standards.
![cement drill bit sizes chart cement drill bit sizes chart](https://www.sealantsandtoolsdirect.co.uk/image/cache/catalog/additional_content/image/large/2266-400x400.jpg)
In order for anchors to work successfully, hole size is critical. When using carbide bits and hammer drills for anchoring to concrete it is important that the hole size meets the anchor size requirements.