HSS Jobber Drills
Jobber drills are the most widely used type of drill in the industry for drilling cylindrical holes. HSS stands for high-speed steel, meaning these drill bits allow for quick drilling in especially tough materials. Similarly, the term “jobber” is synonymous with “multipurpose” or “general purpose”, making jobber drills suitable for a wide array of applications. Detailed below are the various types of HSS jobber drills.
Cobalt Jobber Drills
Cobalt jobber drills are suitable for drilling industrial materials with a high tensile strength and hardness, such as stainless steel, hardened steel, bronze, and cast iron. This drilling is achieved via a thick core, which allows for an increased rigidity in hard materials. What’s more, cobalt can withstand intense heat, meaning it can be used for extended periods of time without the need for cutting fluid or cooling.
Roll Forged Jobber Drills
Roll forged jobber drill bits are used for drilling holes in steel, wood, plastics, castings, cast iron, and mild steel. These tools are widely applied in the automotive industry, being used in automobile and bus body shops, as well as machine shops and manufacturing plants. This is because forged drill bits are particularly effective for point enhancement.
Formwork and Installation Jobber Drills
Formwork and installation jobber drills are capable of drilling through several layers of material. This is all thanks to its conical transition from shank to drill, making it easier to guide the bit out of the drill hole. The most common materials used in formwork include plywood, aluminium, steel, timber, and even fibreglass.
Fully Ground Jobber Drills
Fully ground jobber drills are ideal for drilling hard plastics, cast iron, wood, plastic, aluminium, nonferrous metals, and non-alloyed steel. Additionally, a split point of 135° allows for 40% faster drilling with lower feed pressures than the standard HSS drill. Sizes between 1mm and 13mm are offered on the online store.
Tile and Glass Jobber Drills
As the name suggests, tile and glass jobber drills are best suited to drilling through tile and glass; however, they can be used in conjunction with all manner of materials. These include wood, concrete, brick, masonry, porcelain, granite, marble, and, of course, tiles and glass. In order to extend the lives of these drill bits, lubricant should be used to keep the tips cool.
Masonry Jobber Drills
When drilling mortar, the key is to go slow, which masonry jobber drills allow for. Should you work too quickly, this could result in the bit overheating, as well as mistakes within the work. Meanwhile, it’s advised to drill concrete in water to avoid too much heat being generated during the drilling process.
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