Because a key factor in the life of any tool is how long it’s used for, finishing your job sooner means you’re using your tool less and helping prolong its working life. For example, a 4-cutter TE-CX bit is designed to drill through reinforced concrete a lot faster than a TE-C, which helps bring down labor costs.Īt the same time, choosing ultimate class bits can help extend the working life of your tool by allowing you to drill more quickly. Utimate class drill bits also help you do the job much more rapidly. However, they are generally longer lasting, meaning the final cost-per-hole can be similar, or even lower, than with our premium bits. Our ultimate drill bits can have a significantly higher up-front price tag. Check out our most reviewed product, the TE-C 5/32 in. Do Hilti Masonry Drill Bits come in sets Hilti Masonry Drill Bits have 158 individual products and 1 sets. To give you more control over costs, you can choose between our premium (TE-C and TE-Y) bits and ultimate (TE-CX and TE-YX) bits. What's the best-rated product in Hilti Masonry Drill Bits The best-rated product in Hilti Masonry Drill Bits is the TE-CP SM 18 7 in. No matter what the requirements of your job or budget, we have a high-performing rotary hammer bit for your drilling applications.Īll our SDS-Plus and SDS-Max bits beat standard rotary drill bits when it comes to drilling speed over lifetime in concrete, drilling speed in rebar, the total amount of anchor holes you can drill, and robustness in rebar and concrete. In German-speaking countries, the back-formation "Spannen durch System" (Clamping System) is used, though Bosch uses "Special Direct System" for international purposes.Why pay more for rotary hammer drill bits? The name comes from the German "Stecken – Drehen – Sichern" (Insert – Twist – Secure). The SDS bit was developed by Hilti and Bosch in 1975. Hilti's TE-S system is similar to these SDS systems, but is designed for chipping only (no rotation) in tools for applications larger than could be handled by SDS-Max (e.g. SDS-Top has been largely phased out in North America and is not common except for older tools. Standard lengths are 12 to 21 inches (300 to 530 mm). SDS-max is more common for larger rotary hammers and chipping guns, and common sizes start at 1⁄2 inch (13 mm) diameter up to 1 3⁄4 inches (44 mm) diameter. The shortest SDS-plus masonry drill bits are about 110 mm overall length, and the longest 1500 mm. SDS-plus is the most common by count of tools manufactured, with masonry drills from 4 mm diameter to 30 mm (and from 5/32" to 1-1/4") diameter ordinarily available. There are three standard sizes of SDS: SDS-plus (or SDSplus or SDS+), SDS-Top and SDS-max. The shank must be lubricated with grease to allow it to slide in the chuck. The hammer of the drill hits the flat end of the shank. The smaller indentations that do not open to the end are grasped by the chuck to prevent the drill bit falling out. Hilti will provide the minimum required however, the hole can be larger, but it will be up to the design engineer to verify the shear bearing area, as discussed previously. The rotational drive uses the sliding keyways that open to the end of the shank, which mate with keys in the chuck. Jelean, In regards to your quesitons: (1) No, there are no tolerance limits for the fixture hole diameter. The hammer of the drill acts to accelerate only the drill bit itself, and not the large mass of the chuck, which makes hammer drilling with an SDS shank drill bit much more productive than with other types of shank. The drill bit is not held solidly in the chuck, but can slide back and forth like a piston it does not slip during rotation due to the non-circular shank cross-section, matching the chuck. This shank and chucks made for it are especially suited to hammer drilling with masonry drills in stone and concrete. The SDS shank has the advantage of fitting into a simple spring-loaded chuck, so that bits are simply pushed into the chuck without tightening. The diameter of an SDS and SDS Plus shank is 10 millimeters. What are the differences between SDS, SDS Plus, and SDS Max drills?
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