JOHNSON ELECTRIK ANNULAR CUTTER BLADE HSS 50MM

An annular cutter, often referred to as a "mag drill bit" or core drill, is a specialized metalworking tool that cuts only the periphery of a hole rather than the entire surface area. This "hollow" cutting method leaves a solid metal slug at the center, making it up to 4 times faster than traditional twist drill bits and significantly more energy-efficient.

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Key Types & Materials

The two primary categories are distinguished by their material composition and intended application:

High-Speed Steel (HSS):
- Best For: Softer metals like aluminum, mild steel, and low-tensile alloys.
- Highlights: More affordable and resharpenable, extending its service life. HSS cutters are generally tougher and less likely to shatter if they encounter defects in the material.
Tungsten Carbide Tipped (TCT):
- Best For: Harder materials like stainless steel, cast iron, and high-tensile structural steel.
- Highlights: Extremely heat-resistant and durable, often lasting up to 10 times longer than HSS in high-volume applications. However, they are more brittle and typically cannot be resharpened