PRO by Lienemann RK434019 Metal Drill Bit Set HSS Co Drill Bit Set 1-10 mm Stainless Steel 19 Pieces HSS Cobalt Drill Cassette DIN 338 Type N Professional Metal Drill Bit

Quality: the 19-piece drill bit set is made of high-quality HSS steel (high speed steel) with 5% cobalt content. This HSS cobalt drill set is used by professionals in car workshops, metal processing and industry. The HSS Cobalt drill bits can be reordered individually. Metal drill bit set HSS cobalt: There are various names for HSS Co drills: HSSE, HSS E, HSS Co. The decisive factor is the cobalt content: the higher this is, the harder the cobalt drill is at the same time, it can withstand less shear forces. For this reason, HSS cobalt drills with 8% cobalt content break regularly when used in the hand drill. Cross cut: the HSS twist drills from 3 mm have a cross ground. Split point in a metal drill has the advantage that it is suitable for particularly tough and hard materials such as alloyed steels and stainless steel and only a low feed force is required when drilling. A split point drill bit has better centring properties than a standard grinding, creating a clean hole and minimising the risk of "running away" of the drill. Chip removal is also significantly better with a twist drill with split point than a drill with standard ground. Know: Which metal drill bits do I need for which purpose? Why do HSS Co drill bits break? These and many other questions about HSS drill bits reach us regularly at trade fairs and at customer visits. In order to give a quick and simplified overview, we have shown the application areas of the twist drill bits graphically in the pictures. A normal HSS G metal drill can easily drill 3-5 holes in stainless steel, with 400 holes, a HSS cobalt drill is highly recommended. The higher the cobalt (Co) content, the easier a drill breaks - we recommend the use of a drill with a HSS Co drill with 5% cobalt content from 8 mm. Data: The HSS drill bits are manufactured according to DIN 338 and with a tip angle of 135°. The 135° point angle is particularly suitable for drilling in hard metals, as the contact pressure is reduced and the metal drill is better guided in the material. The professional metal drill bits are ideal for drilling in steel, stainless steel, V2A, cast steel, grey and die casting, sintered iron, graphite, aluminium alloys, brass and bronze. Unlike HSS R (roll-rolled drill) or milled metal drills, HSS G, solid ground drill bits offer higher dimensional accuracy and better concentricity. LIENEMANN PRO: Lienemann GmbH & Co. KG has been supplying specialist retailers as well as wholesalers with high-quality hand tools since 1934. As a manufacturer of high precision tools, Lienemann Pro is a top supplier among industrial customers due to the high quality and unmatched service life of the drills and tapping tools.