Cleveland 2075N Cobalt Steel Jobbers' Length Drill Bit, TiCN Coated, Round Shank, 135 Degree Notch Point, 1/8" (Pack of 10)

The Cleveland 2075N Q-Cobalt wide land parabolic flute design, jobber length, high-speed steel (HSS) containing cobalt drill bit has a 38-degree helix angle, with a 135-degree notched-point drill point and Titanium carbonitride (TiCN) surface treatment, which is designed for high-performance drilling applications. The shank diameter is the same as the drill size. The 2075N series performs best when drilling into stainless steel, tool steel, low/med/high carbon steel, cast iron, aluminum, brass, plastic, and nickel alloys. TiCN is a ceramic coating that is harder than TiN and has lower friction. It combines toughness with good wear resistance. Once the coating has worn through, it can be replaced much easier than other coatings. Spiral flutes act as a passageway for chip extraction from the hole and for coolant to enter the hole. The twist of the flutes brings chips up and away from the cutting edge. The parabolic design allows for smooth and efficient chip, also called swarf evacuation. The higher, also called faster helix provides greater lifting power for chips and works well in deeper holes. The 135-degree notched-point drill point works well for hard and tough materials. The lip clearance is very shallow to provide support for the cutting edges. The shorter cutting edge reduces friction and heat during drilling, increasing tool life. The notched point can withstand higher thrust loads and has same benefits as a split-point design. The wider land increases the torsional strength of the drill. Round shanks allow use with a wide variety of tool holding systems. Made of cobalt-powder-metal substrate which is many times harder and stiffer than HSS, will hold an edge longer, and will deflect less than HSS. These are also more resistant to heat than HSS. These qualities allow it to run at higher speeds and feeds. They are made to ANSI and DIN industry standards, which help ensure that drill bits around the world, conform to the same specifications.

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