Sds+ Drill Bits
This blog article is a must-read if you’re looking for SDS drill bits. SDS bits are adaptable tools that work with a variety of brickwork materials. This article will define SDS drill bits and go through the many varieties of SDS bits that are currently on the market. Additionally, we’ll discuss the best SDS hammer drills to use and provide some advice on how to purchase SDS bits for your next job.
Difference Between SDS Plus and SDS Max
SDS Plus and SDS Max are presumably the reasons you’re here, even if SDS and SDS-Top bits are far less popular and SDS-TE-S bits are usually used for chiselling and demolition applications. What makes a difference, then? The masonry pieces are physically different sizes. The SDS Max has an 18mm shank, whereas the SDS Plus has a 10mm shank. This indicates that SDS Max bits can handle higher torque and force while doing harder masonry work. The SDS Plus series is shorter and suited for lighter duty tasks and holes with smaller diameters. Don’t reduce them to a menial housekeeping task. Sometimes, when the task doesn’t need a wider hole or when you’re working near to the edge, you’ll need to utilise an SDS Plus bit. A smaller, less powerful drill is preferred because it lowers the chance of chipping off a piece of concrete from an exterior edge, especially when working near to the edge. SDS Max has far longer lengths for deeper embedment, as you’ll discover. While the two have some overlap, SDS Max are typically made for more difficult, deeper drilling situations. Because of its enhanced torsional strength, the SDS-Max variant may now be driven at faster speeds while still exerting its force without breaking. Concrete’s tightly packed rebar and aggregate will obviously provide higher resistance to drilling than other materials. Here, having more torque and power will help you do the job faster. A SDS Max bit is a multipurpose drill bit that you would use for drilling through thicker substrates or when you have a bigger stud that has to be implanted deeply. For instance, when you need to drill through a wall for wiring or a conduit. When purchasing masonry bits, take into account the many varieties that are offered and search for one that suits your purpose. Don’t simply go out and get one because it’s less expensive.
When drilling, SDS bits experience significant stresses and friction that cause heat production and compromise the bit’s integrity. We utilise tungsten carbide in our SDS bits because of this. SDS drill bits with tungsten carbide enhancement are almost twice as strong as steel and efficiently dissipate heat. It is possible to get a smoother finish and more effective material removal since the tip material retains a cutting edge better than steel instruments. While tougher than titanium carbide, other manufacturers often employ this material don’t conduct heat as effectively. Compared to tungsten carbide, which will leak heat into the surrounding steel and shorten the bit’s operating life, it has a far greater thermal conductivity.
The integration of masonry bits into steel flutes and splines varies across manufacturers since most masonry bits have varying tips. The tip’s weldability or insertion will be important design elements to consider. But how do they differ? The flutes of welded tip designs are closer to the tip, which results in quicker material removal performance. Although sunken or inserted tips might maintain their sharpness longer, they are often exclusively utilised with softer materials. More cleaning and brushing out of the hole will be required since insert tips will produce more dust.
The next thing to look for is the tip layout. Various SDS bits will have:
- Crossed tips may work better through rebar but produce more dust. Concrete dust is extracted more effectively from bits with cutting tips connected to the flutes than from those with crossing designs.
- Chamfered rebar carbide tips provide a balance between the bit’s operating life and the efficiency required to cut through rebar. To get more usage out of the bit, always seek for chamfered tips.
- To effectively transfer dust into the vacuum holes, multi-cutter or Y-cutter bits are often seen on dustless drill bits. They are, however, also present on SDS Plus and SDS Max bits. Due to their inserted tip design, these designs cannot be as beneficial on ordinary bits.
Flute Amount & Design
To effectively remove dust and avoid tip clogging, flutes are positioned along the shaft and up to the spline. A wide gap between the tip and the flute may be harmful, but so can the size and shape of the flute. The tip design often determines how many flutes are present. More material will be removed quickly the more flutes you have. It’s crucial to remember that having either too few or too many flutes might be problematic. For drilling into concrete and masonry, bits with a 3 to 4 can be the best compromise. Greater dust removal is made possible by higher flute designs, or flutes with fewer revolutions, but shallower, tighter flutes may be more prone to clogging near the tip. While drilling, shorter flutes need less force but remove less material, which slows down the task at hand.
Dustless or Hollow Drill Bits
Drill bits without dust are given great attention. Dustless drill bits, which are relatively new on the market, utilise their tips and perforations to suck dust away from the bit and into a vacuum passage as you drill. This is particularly useful when concrete silica dust is an issue since it provides for better working conditions and more effective drilling. A modern solution to the age-old issue of concrete dust clogging drill holes and often leaving unfilled holes is the vacuum holes. The drill holes are left clean and clear after the vacuum holes remove the dust from the bit. Dustless drill bits may reduce the requirement to blow and brush holes prior to injecting chemical anchors when used in chemical anchoring applications. Dust exposure may be decreased by using dustless drill bits to remove crystalline silica, often known as silica dust. When masonry materials are crushed, drilled, sawed, or polished, silica dust is emitted. With excessive exposure, the tiny stone particles that enter the respiratory system may have disastrous effects on health, leading to incapacitating and crippling illnesses. Dustless drill bits function as an engineered control that removes silica-filled concrete dust before it can spread into the air.