A further disadvantage of the cross bit was that the majority of the carbide was situated around the centre of the bit face and not towards the outer edge of the drill bit where there is the most rock to cut. The action of brazing preset stresses within the drill bit thereby limiting its life. Four chisel shaped lengths of tungsten carbide were brazed into the bit body. The first type of drill bit used with down the hole hammers was a “cross bit” design. Suitable for all soft and medium rock conditions including fractured and fissured rock. Suitable for soft and medium compact low abrasive rocks producing large cuttings. Strong rugged shape for high performance and good service life in all conditions, particularly suitable for very hard abrasive rocks and deep hole drilling. Good balance of fast drilling and long service life. Strong design for all conditions, especially hard abrasive rock. Head DesignsĪlternative design for all rock conditions especially fractured and fissured rock and changing formations.Īlternative design for all rock conditions particularly deep hole drilling: can improve hole alignment as a result of inverted pilot. We guarantee that we have a drill bit that can tackle any challenge and rock face formation.

These are available with three different inserts: domed, ballistic and semi-ballistic inserts. We have three different bit heads: Flat Face, Concave and Convex. Every hole in the bit head is machined to within microns and fitted with carbide inserts which provide the cutting action of the rock.

They are carburised and heat-treated to offer extra protection against wear and fatigue. We produce all our drill bits at our specialised plant where they are made out of high quality nickel chrome alloy steel. Our carburised drill bits are the best in the world, providing outstanding performance and durability. We pride ourselves on having a comprehensive range of drill bits for DTH hammers so you can be sure that you will definitely find a suitable drill bit for any project you are undertaking. It is crucial that you choose the right drill bit for your DTH hammer to save costs and time. We guarantee to have a drill bit that can tackle any challenge Drilling bits are available in a range of different sizes and configurations so they can drill a wide range of holes sizes, in different ground conditions. Our drill bits are designed with a splined drive for rotating the bit in the ground. It can cut round and square mortises to improve work efficiency.***COST-EFFECTIVE -These woodworking inlay chisels can reduce the labour intensity of construction workers, speed up construction, and reduce construction costs in the construction, installation, renovation, and decoration industries.***APPLICABLE MACHINE -Bench top drilling machines The vertical distance between the bench drill chuck and the workbench is at least 300MM, otherwise it cannot be installed, Please pay attention to the size before buying to see if it fits your machine.Drill Bits for DTH Hammers What are ‘Down-the-Hole’ (DTH) Drill Bits and how are they used?ĭown-the-hole drill bits are used with down-the-hole hammers for drilling holes through a wide range of rock types. This set of accessories can convert the drilling machine into a wood mortise machine.***MULTIFUNCTIONAL This multifunctional mortise and tenon machine attachment can not only cut wooden mortises such as circles, squares and special squares but also can be used for Rectangular grooves.***WIDE APPLICATION The Attachment is suitable for window sashes, cabinet furniture factories, model shops and other wood factories. DRILLING MACHINE ATTACHMENT The mortise accessory is a bench drill Attachment.

Hole drill bits