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Overview of B-type Center Drills
Center drill, is a type of drilling tool commonly used in machining. Center drills are primarily used to mark the location of a drill hole in a material and to provide a starting point for the drill bit. The use of a center drill pre-drills a tiny, precise hole in the material before the drilling operation begins, ensuring that subsequent drills can accurately align and penetrate the material.
Center drills are typically made of wear- and temperature-resistant cemented carbide materials to ensure that they maintain sufficient hardness and stability when rotating at high speeds and subjected to axial thrust. There are various types of center drills according to different designs and applications, such as composite center drills, combination center drills, and ruler type center drills. There are also special types of center drills, such as composite center drills without sheaths, for specific machining needs.
B type center drills are available in a wide range of diameter sizes from 1mm to 100mm, common b type center drill dimensions include：
1mm to 10mm
11mm to 25mm
26mm to 50mm
51mm to 100mm
B-type center drills are also available in a wide range of lengths, from 10mm to 300mm, depending on factors such as depth of machining and material thickness. In practice, users can choose the appropriate length size according to the machining requirements.
Cutting edge angle: 60 degrees and 90 degrees, respectively, for different materials and processing conditions of the drilling needs.
