DIN1870 long morse taper shank HSS twist Drill Bit

• Surface Finish: white,amber,black Finish
• Manufacturing art:fully ground
• DIN1870
• Size(mm): 10.0mm-80.0mm
• Shank: morse taper shank

Technical Data

• Dimensions: Cutting diameter ranges 6mm – 100mm; Morse taper shank sizes MK1 – MK6; extra – long overall length (370mm for 18.5mm diameter, up to longer sizes for larger diameters), with flute length matching the long – drilling demand (e.g., 245mm flute length for 18.5mm diameter).
• Cutting & Material Info: HSS (commonly M2, optional M35 with cobalt); 118° point angle (135° split point available); N – type right – hand spiral flutes, 20 – 30° helix angle; H8 tolerance.
• Surface & Standards: Surface finishes include black oxide, bright, amber, or titanium coating; fully complies with DIN1870 standard.

Advantages

• Stable high – torque transmission: The Morse taper shank can be directly connected to machine spindles, avoiding slippage and fitting high – torque drilling for large – diameter holes.
• Efficient deep – hole drilling: The extra – long flute design enables smooth deep – hole machining and effective chip evacuation, reducing clogging during drilling.
• Durable & versatile: HSS material offers good wear resistance and heat resistance; it can process alloy steel, cast steel, sintered metals, etc., suitable for materials with a strength up to 900N/mm².
• Precise & convenient: The self – centering 118° point penetrates materials without pre – drilling pilot holes, and the milled flutes ensure precise dimensions and long service life.