Dormer A92135/64 Screw Machine Drill - 0.5469, 35/64, 64, a921

Description

The stub length offers more stiffness than a jobber-length drill bit. It has an Aluminum chromium nitride (AlCrN) coating (also called Smooth-Flow coating), which helps increase chip removal and helps in wear resistance, and combines hardness in high heat with high oxidation resistance. These qualities allow it to run at higher speeds and feeds. These are also more resistant to heat than HSS. The right-hand twist brings chips up and away from the cutting edge. This coating is most suitable for use on ductile cast iron and carbon steel. The A941 series has a type W flute form, with a fast helix angle of 35 to 45 degrees, and is most suitable for drilling into steel, stainless steel, titanium, nickel, and alloyed aluminum. Drilling, or hole making, is the most common metalworking operation in the world. The shank diameter is the same as the drill size. It can drill holes up to three times the diameter of the drill. This design allows for single-pass drilling, which helps eliminate the need for pecking in up to three times the drill diameter deep holes, thus offering improved efficiency and increased productivity. Twist drill bits are the most common type of drill bit used. With proper cutting conditions and rigid machine setup, holes to H10 tolerance can consistently be achieved. The parabolic design, combined with a parallel thinned web, allows for smooth and efficient chip evacuation. Twist drill bits are commonly us.

Key Features

• It has an Aluminum chromium nitride (AlCrN) coating (also called Smooth-Flow coating), which helps increase chip removal and helps in wear resistance, and combines hardness in high heat with high oxidation resistance.
• The Dormer A921 Spectrum stub-length drill bit is a 130-degree, PFX point, round shank drill bit made of HSS and cobalt.
• This design allows for single-pass drilling, which helps eliminate the need for pecking in up to three times the drill diameter deep holes, thus offering improved efficiency and increased productivity.
• The parabolic design, combined with a parallel thinned web, allows for smooth and efficient chip evacuation.
• The A941 series has a type W flute form, with a fast helix angle of 35 to 45 degrees, and is most suitable for drilling into steel, stainless steel, titanium, nickel, and alloyed aluminum.
• This coating is most suitable for use on ductile cast iron and carbon steel.