Always look for chamfered tips to increase the use you get out of the bit. Chamfered rebar carbide tips balance the efficiency needed to demolish through rebar and the working life of the bit.Bits with cutting tips attached to the flutes extract concrete dust more efficiently than those with crossed design. Crossed tips that can provide more performance through rebar, but leave more dust.The next thing to look for is the tip layout. Insert tips will leave more dust that will mean more cleaning and brushing out the hole. Inserted or recessed tips can stay sharper for longer, but are often only used for softer materials. Welded tip designs have faster performance in material removal thanks to the flutes being closer to the tip. Key design features to look for will be if the tip is welded or inserted. It's thermal conductivity is much higher than tungsten carbide, which will bleed into the rest of the steel bit, reducing it's working life.Īs most masonry bits will have different tips, their integration into the steel flutes and spline vary amongst brands. Other brands often can use titanium carbide which while harder, doesn't shed heat as well. The tip material maintains a sharp cutting edge better than steel tools, allowing for a smoother finish and efficient material removal. Tungsten carbide-enhanced SDS drill bits are approximately twice as stiff as steel and effectively shed heat. That's why our SDS bits use tungsten carbide. SDS bits undergo some serious pressures and friction when drilling, generating heat and affecting the integrity of the bit. There are key features to look for when selecting any SDS bit. Once you have these under control, you can move onto your bit types and features. What diameter hole are you drilling? What are you drilling into? Concrete, stone, brick? Are there concrete dust dangers? These questions can be absolutely paramount to the success of your project. Another consideration to make is the application. If you work as a trades professional, there are advantages and disadvantages to using different SDS drill bits.īefore you purchase your SDS masonry bits it's important to make sure they're compatible with your current drill. SDS masonry bits are most commonly used in post-installation of anchors in concrete construction and masonry applications such as stone or brick. Don't just go buy one because it's cheaper.īack to Top Buying Guide: What should I look for? When you're buying masonry bits, consider the different types that are available and look for one that fits your application. For example, when you have to drill through a wall for a conduit or wiring. This is where having a higher torque and increased force will save you time.Ī versatile drill bit, you would use a SDS Max bit when you have a larger stud that needs to be embedded deep or when drilling through thicker substrates. When drilling into concrete, bits will inevitably encounter more resistance due to rebar and aggregate that are densely packed in. The SDS-Max variation has been created to have an improved torsional strength which means that it can be driven at higher speeds and still maintain its force without breaking. There is some overlap between the two but SDS Max are generally designed for more demanding, deeper drilling applications. You'll find SDS Max have much longer lengths for deeper embedment. Especially when working close to the edge, a smaller, less powerful drill is preferable because it reduces the risk of chipping off a piece of concrete from an outside edge. Sometimes you will need to use an SDS Plus bit when the job doesn't demand a larger hole or when you're working close to the edge. Don't relegate them to a household duty bit. The SDS Plus range is shorter in length and is tailored to lighter duty work and smaller diameter holes. This means that SDS Max bits have an increased capability for tougher masonry work, withstanding more torque and force. SDS Plus have a 10mm shank, while the SDS Max has an 18mm. Physically there are size differences in the masonry bits. While SDS and SDS-Top bits are much less common and SDS-TE-S bits are mostly for chiseling and demolition applications, SDS Plus and SDS Maxare probably why you're here. What's the Difference Between SDS Plus and SDS Max?
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