|Cutting Depth:||2 in|
|Bit Material:||Carbide Tipped|
|Cutter Diameter:||4 in|
|Decimal Equivalent:||4.0000 in|
|Shank Diameter:||3⁄4 in|
|Surface Finish:||Bright (Uncoated)|
|For Use On (Best):||Steel; Stainless Steel; Cast Iron; Nonferrous Metals|
|Cutting Direction:||Right Hand|
|Display Sell UOM:||EA|
|Drill Bit Style:||Core|
|Drill Diameter Measurement System:||Inch|
|Drilling Application:||Conventional Drilling|
|For Tool Type:||Electromagnetic Drill Press|
|For Use On (Good):||Not Rated|
|For Use On ISO Code (Best):||M; K; N; P|
|For Use On ISO Code (Good):||Not Rated|
|For Use With Pilot Pin:||Not Rated|
|Number of Flutes:||Not Rated|
|Shank Thread Pitch:||Not Rated|
|Shank Thread Size:||Not Rated|
|Spiral Direction:||Right Hand|
|Stack Cut Teeth:||No|
Compliance and Restrictions
Country Of Origin
About Annular Cutters for Magnetic Base Drills
Make accurate, smooth-walled holes to tight tolerances using less power and effort and generating less material for removal than traditional twist drill bits. Annular cutters, also known as core drills, have a hollow core surrounded by flutes and teeth that cut through the perimeter of the hole during drilling, leaving a solid slug in the center. A pilot pin centers the drill, allows coolant to flow to the tip during cutting, and removes the slug. These cutting tools can typically create more holes than traditional twist drill bits and hole saws before they must be resharpened and do not require predrilling or step drilling. Annular cutters are designed for use with drill presses with a magnetic base, but they can also be used with stationary setups such as mills, lathes, and CNC machines. Arbors and arbor adapters (both sold separately) connect the cutter to the machine.
High speed steel is compatible with a range of materials and is the most common choice for general-purpose drilling applications. High-speed steel tools are well-suited for drilling into soft steels, carbon steels, wood, plastic, and nonferrous metals such as aluminum, brass, bronze, and copper. Cobalt steel is more wear resistant than high speed steel at higher speeds. It is suitable for drilling into hard materials such as hard steels, stainless steel, titanium alloys, and nickel alloys. Carbide is more wear resistant than high speed steel or cobalt and can be used for drilling at high speeds. Carbide tools require rigid toolholding and are well-suited for drilling into the toughest materials, including cast iron, nonferrous alloys, glass, plastics, and composites. Carbide tipped tools provide the increased strength and wear resistance of carbide steel on the cutting edge but typically cost less than a solid carbide tool. They are often used for dry drilling.
Bright (uncoated) tools have no additional surface treatment or coating and are a good choice for everyday drilling applications. Black oxide helps retain lubricants, improving chip flow and drilling performance. TiN coating provides better temperature resistance and wear protection than bright (uncoated) tools, allowing the tool to be used at higher speeds.
Choose these carbide or carbide tipped annular cutters and hole cutters for creating smooth-walled holes in tough materials such as cast iron, nonferrous alloys, glass, plastics, and composites. Choose a shank style that matches your tool setup and a finish that suits the workpiece material.