Note: The term HSS for this tool category comes from the utilised drill material. High speed steel (HSS) is a high alloy tool steel extremely resistant to wear due to its manufacturing process and is dimensionally stable up to approx. 600°C. Cutting oil or coolant emulsion should be used as cooling lubricant, when machining steel. Spirits or petroleum should be used for aluminium. Normally, plastic and wood can be dry-machined.
NO 28 864
NO 28 852
NO 28 854
NO 28 856
NO 28 858
HSS drill bits
Selected steel quality. Purpose-made stable construction with high concentricity. Shaft and bit are manufactured from a one-piece blank. High hardness for optimum life expectancy and elasticity. For drilling metal, non-ferrous metals, plastic, PC cards and wood. Work speeds: soft materials approx. 8,000rpm, hard materials approx. 3,000rpm. Ø shanks 2.35mm. Rotational speed see table.
NO 28 874
HSS twist drill in storage case
10-piece set. Similar to DIN 338. Ø 0.3 – 0.5 – 0.8 – 1 – 1.2 – 1.5 – 2 – 2.5 – 3 – 3.2mm. For drilling non-ferrous metal, steel and stainless steel. In labelled cassette with fold back and stand function. For clamping we recommend our3-jaw drill chuck. Rotational speed see table.
NO 28 876
HSS twist drill set with centring pin
Ø 1.5 – 2.0 – 2.5 – 3.0 – 3.5 – 4.0mm. For precision tapping of wood and plastics; also non-ferrous metal, steel and stainless steel sheets. Titanium coating reduces friction and increases service life. Shaft Ø 3mm, 6-piece set. Rotational speed see table.
For steel, glass, circuit boards: Tungsten carbide drills
NO 28 324
NO 28 326
NO 28 328
Tungsten carbide drills
Made of wear-resistant tungsten carbide. For drilling glass, semiprecious stones, porcelain, ceramics, marble and other hard stones. The hard stones are subdivided according to the degree of hardness from 1 – 10. Tungsten carbide can be used up to hardness degree 6. Drilling hard stones with a hardness degree of more than 6 calls for the use of diamond tools. Shaft Ø 3.0mm. With ideal cutting angle of 6°. Rotational speed see table.
NO 28 320
NO 28 321
Tungsten carbide milling drills (spear drills)
For drilling, milling and cutting fibre glass or PERTINAX circuit boards. Also for drilling pearls and similar. Shaft Ø 2.35mm. Rotational speed see table.
For glass, ceramics, plastic: Diamond tools
NO 28 255
Diamond twist drills
For drilling holes in (semi) precious stones, etc. Shaft Ø 2.35mm.
