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High Precision Violet Series Drills for Counter Boring

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Exclusive design for counter boring.

• Innovative cutting edge geometry for high performance counter boring.
• Excellent chip breaking and high precision flat surfaces.

Features

Special point geometry for excellent chip breaking

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Ideal chip geometry

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Versatile

Low cutting force means suitability for all machines that can use HSS drills.

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High efficiency machining

The VAPDSCB drill delivers the same high performance as a conventional counter boring end mill but gives longer tool life.

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Recommended cutting method

• VAPDSCB breaks up chips and prevents them wrapping around the tool.

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Note) When counter boring using the VAPDSCB after drilling a bolt hole (pilot hole), unbroken chips may form and wrap around the tool.

Other machining examples

Deep cunter boring

Since non-peck drilling is possible up to the effective flute length*, there is no need to drill a pilot hole, therefore shortening the machining time.

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Blind hole

The small dimple allows a thicker base material on blind holes.

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Pilot hole for boring

The 180° point angle the machining reduces the machining allowance on the end face.
This reduces vibration during the finish boring operation and extends tool life.

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MIRACLE SIGMA
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