PILOT DRILL BIT FOR 18 DIAMOND CORE BITS

Pilot Drill Bit for 18mm Diamond Core Bits

Diameter:Ø10mm
Total Length:200mm
Classification:Industrial (Blue)

A Pilot Drill Bit for 18 Diamond Core Bits is an indispensable component designed to optimize the performance of large-diameter core drilling operations, particularly those utilizing dry-cut diamond core barrels. Its fundamental purpose is to function as a starting and centering guide for the main cutting tool. This small, hardened bit is the first part to penetrate the material, ensuring the much larger, heavier core barrel remains perfectly aligned and stationary until its diamond segments are fully engaged.

This specialized accessory is typically constructed from high-strength steel or carbide for superior durability and wear resistance. It’s engineered with a tapered shank for quick and secure insertion into the core drill’s adaptor—often compatible with common connection systems like Hex and SDS Plus adaptors. This tapered design holds the pilot bit firmly in place during operation but allows for its eventual removal, often with the help of a drift key, once the core bit has established its cut.

The use of a pilot bit dramatically enhances the quality and efficiency of the drilling process. By eliminating the tendency for the core bit to “walk” or wander across the surface, it ensures a clean, accurately centered hole right from the start. This not only improves drilling precision but also minimizes damaging side-load forces on the core bit and the drill rig, thereby extending the overall life of both the diamond tooling and the machine.

Application:

• Fit into the diamond core bits.
• The Drift key is a wedge used to remove the pilot drill from the Dry Cut Diamond Core Drill adaptor with a hammer. See illustration below.
• Plumbing
• Electrical
• Construction
• DIY