Drills

Centering drill, blackened drill Type: B Drilled diameter: according to the selected variant Angle: 60 ° and 120 ° Material: HSS - high speed steel Standard: ČSN 221112

Left centering drill, blackened drill Type: A Drilled diameter: according to the selected variant Angle: 60 ° Material: HSS - high speed steel Standard: ČSN 221114

Centering drill, ground drill bit Type: R Drilled diameter: according to the selected variant Angle: 60 ° Material: HSS - high speed steel Standard: ČSN 221116

Centering drill, blackened drill Type: R Drilled diameter: according to the selected variant Angle: Material: HSS - high speed steel Standard: ČSN 221116

Blackened left-handed steel drill Drill length: Classic middle series Material: HSS Standard: ČSN 221131 Usage: General - hand, stand, column drills Non-alloy steel, cast steel with strength up to 600 N / mm2 Ductile iron, short-chip aluminum alloy, bronze

Double-sided body drill Material: HSS (high speed steel) ČSN 221137

Drill with conical shank, morse taper Length of drills - see attached table Clamping shank: morse taper Helix: 25 to 30 ° Top angle: 118 ° Drilling depth: 5xD Material: HSS Drill production technology: milled / blackened Standard: ČSN 22 1140 / DIN345 RN Usage: Powerful drills recommended for drilling in components made of non-alloy and alloy steel, steel castings up to 900 N / mm2, gray, malleable and ductile cast iron, sintered steels, aluminum alloys with short chips, bronze.

Drill with conical shank, morse taper Length of drills - see attached table Clamping shank: morse taper Helix: 25 to 30 ° Top angle: 118 ° Drilling depth: 5xD Material: HSS Drill production technology: wrought / blackened Standard: ČSN 22 1140 / DIN345 RN Usage: Drills recommended for common drilling in components made of non-alloy and alloy steel, steel castings up to 900 N / mm2, gray, malleable and ductile cast iron, sintered steels, aluminum alloys with short chips, bronze, tough brass, etc.

Drill with conical shank Average: according to the selected variant Material: HSSCo5 Drill dimensions - see enclosed catalog sheet Helix angle: 25 ° - 30 ° Top angle: 128 ° Podbrus: C Standard: 221143 / DIN 345 RN

Taper shank drills with a steep helix and a large core thickness with a special blade - they are less sensitive to breakage. Average: according to the selected variant Material: HSSCo8 Drill dimensions - see enclosed catalog sheet Helix angle: 10 ° - 15 ° Top angle: 128 ° Podbrus: Form C for drills pr. 10.0 - 40.0 mm and Form A for drills dia. 41.0 - 50.0 mm Production method: milling Standard: ZVSE 221146 Usage: For difficult to machine materials Hardox 450 and Hardox 500 Armored plates Drills have increased heat resistance

Drill with conical shank Average: according to the selected variant Material: HSSCo8 Drill dimensions - see enclosed catalog sheet Helix angle: 25 ° - 30 ° Top angle: 128 ° Podbrus: C Standard: 221148 / DIN 345 RN High-performance drill with increased heat resistance designed for drilling difficult-to-machine materials. Co8 drills have better heat resistance than Co5 drills. They are very hard, wear-resistant, but also very fragile! Require higher system rigidity: machine -> tool -> workpiece Usage: Steel with strength over 1200MPa Stainless steel Cast iron Aluminum and alloys Copper and alloys Heat-resistant steel HARDOX 400 and HARDOX 500

Quality Czech step drill for metal Step drill for holes for shank and Allen screw head 180 ° Helix angle: 25 ° to 30 ° Tip angle: 118 ° and 180 ° Form: A Material: HSS Standard: CSN221252 When drilling, lower cutting conditions than the standards for conventional drills must be selected. Usage: Step drills with four chamfers are recommended for drilling holes for screws and at the same time countersinking for cylindrical screw heads in components made of non-alloy and alloy steel and cast steel up to 800 N / mm2, gray, malleable and ductile cast iron, aluminum alloys, etc. If you need a different size, see the enclosed photos - see DIN8376 data sheet - for German screws.