Sady

Cobalt step drills for metal, steel, stainless steel, acrylic glass and non-ferrous metals Set contains drills: 1) Drill 4-12mm with strokes: 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 mm 2) Drill 4-20mm with strokes: 4 - 6 - 8 - 10 - 12 - 14 - 16 - 18 - 20 mm 3) Drill 6-30(32mm) with strokes: 6 - 8 - 10 - 12 - 14 - 16 - 18 - 20 - 22 - 24 - 26 - 28 - 30 -(32needing diameter) mm Number of edges: 2 Clamping shank diameter: 6mm; 8mm; 10mm, with three anti-rotation faces in the chuck Max. thickness of drilled material: 4mm Material: HSS-XE - high-alloy cobalt high-speed HSSE steel(68 HRC) Coating: BLUE-DUR, increases the life of the drill when drilling with very limited cooling(spray, paste), as well as for dry cutting Cutting conditions for drill 4-12mm - steel: 1600 to 550 rpm Cutting conditions for drill 4-12mm - stainless steel: 800 to 230 rpm Cutting conditions for drill 4-20mm - steel: 1600 to 320 rpm Cutting conditions for drill 4-20mm - stainless steel: 800 to 160 rpm Cutting conditions for drill 6-30mm - steel: 1100 to 260 rpm Cutting conditions for drill 6-30mm - stainless steel: 550 to 120 rpm Smaller diameters can be drilled at higher speeds, with increasing drilling diameter it is necessary to reduce the cutting speed and speed. Failure to maintain the speed or overheating the drill may cause it to become dull. Transitions to a larger diameter also perfectly needle the drilled hole. Thanks to the spiral groove, the drilling is smooth, the chips do not stick, low cutting forces, the drilled material has fewer burrs and the tool has a longer endurance.

Stepped Spiral Groove Drills Set: 4-12mm, 4-20mm, 4-32mm Material: HSS Coating: TiAlN Appropriate for drilling into structural steel, CrNi steel and non-ferrous metals up to 4mm. He can handle even drilling of stainless steel sheets. PROGRIP system prevents slipping of the stem in the chuck and optimally transmits torque Spiral groove guarantees quiet operation and high drilling performance Edges in a single step The coating increases the service life of the drill bit but must not overheat! Procedure: High speed for drilling small diameters, when drilling larger diameters, the need for speed is gradually reduced due to increasing circumferential speed. When the coating overheats, the blade is knocked and the blade has to be sanded.

Set of quality drills from HSS material They are suitable for drilling into steel sheet, acrylic glass, sheet metal and non-ferrous metals up to 4mm thickness. The PROGRIP system prevents slipping of the stem in the chuck and optimally transmits the torque. Spiral groove guarantees quiet operation and high drilling performance. The set includes the following drills: 4-12mm, 4-20mm, 4-32 mm Stepped Drills / Stepped Drills

Stepped drills for sheet metal, metal. Set of stepped drills contains 3pcs of drills with ranges: 4-32mm, 4-20mm, 4-12mm Coated - TiN (Titanium nitride) They are supplied in a metal cassette. (Stepped Drills).