Manufacturer: BIG DAISHOWA—Americas
Model: Pilot Drills

Features

• Improve the tool life of a deep hole drill by creating a starter hole, also known as a pilot hole, with pilot drills.
• Drilling a pilot hole 1-2xD in length creates a consistent surface for the next drill to enter without damaging its primary cutting edges or corners.
• A pilot drill has an equal or larger point angle than the succeeding drill, guiding it towards the hole’s centerline and preventing “walking.”
• It is also important for a pilot drill to have a marginally larger diameter than the succeeding deep hole drill, allowing it to guide the drill without damaging cutting edges, margins, or corners.
• The tool features a positive diameter tolerance for improved accuracy.
• It offers 130° or 140° point angles for precision drilling.
• The flute length is 2xD, which optimizes chip removal and stability.