A Taper pilot drill for use with diamond core drill bits. Keeps your core centred during the initial cut, reducing wander and protecting the barrel from the off. Simple, effective, and cheap enough to keep a spare on the van.
A diamond core pilot drill does one job, and it does it well. When you’re starting a core drill into a hard surface, the bit needs something to locate against before the diamonds can get to work. Without a pilot, the core tends to wander, especially on angled or uneven surfaces, and that’s when you end up with damaged barrels and ragged holes. This A Taper pilot drill for 13mm cores gives you a clean start every time.
The A Taper shank is a standard fitting used across a wide range of core drill systems, so compatibility is rarely an issue if you’re working with conventional equipment. It seats securely in the drive and transfers rotation cleanly to the pilot point, holding the core barrel on line until the diamonds are fully engaged with the surface.
Where the Diamond Core Pilot Drill Earns Its Keep
These are used constantly in construction and utilities work. Electricians, plumbers, and mechanical services installers rely on them whenever they’re coring through blockwork, brick, or concrete for cable runs, pipework, or penetrations. The pilot sits inside the core barrel and contacts the surface first, which is exactly what you want when the material is hard or the surface isn’t perfectly flat.
At this price, most experienced drillers keep a couple in the bag. Pilots do take punishment, particularly if you’re working in abrasive aggregate or if the core binds. Having a spare costs less than a coffee and saves the job from grinding to a halt while someone goes to the merchant.
This is not a glamorous product. It’s a small hardened steel drill that sits in the middle of your core bit and stops the whole assembly going sideways before the cut is established. But on any job where accurate coring matters, a diamond core pilot drill is the difference between a clean, straight hole and an expensive mistake. Worth having. Simple as that.
Pro Tip: If your pilot drill is wearing faster than expected, check that the core barrel is fully seating on the drive spigot before you start, a loose barrel puts extra lateral stress on the pilot point and chews through them quickly.
Used whenever a diamond core barrel is being driven into hard masonry, brick, or concrete and a clean, centred start is needed. Common in first-fix electrical and plumbing work where penetrations through walls and floors need to be accurate and tidy. Also used in groundworks and utility installation where coring through engineering brick or dense aggregate is routine.
Best For
Starting diamond core drills in masonry and concrete
Preventing barrel wander at the start of a cut
Electrical and plumbing penetration work
Utilities and groundworks coring
Works With
A Taper drive core drill systems
13mm diamond core barrels
Standard masonry core drill rigs
Key Specifications
Taper type: A Taper
Size: 13mm
Hardened steel construction
Compatible with standard A Taper core systems
Not suitable for: Not compatible with B Taper or other drive systems. Not intended for use without a corresponding diamond core barrel seated correctly on the drive.
Fit the pilot drill into the centre of the A Taper drive before mounting the core barrel. Make sure it protrudes correctly so it contacts the surface first when drilling begins. Mark your hole position clearly, position the core squarely against the surface, and allow the pilot to establish the centre point before applying full pressure to the core.
On harder materials, start at a lower speed to let the pilot bite in cleanly before increasing RPM. Once the core barrel is engaged and tracking true, the pilot has done its job and the diamonds take over. Keep the pilot clean and check the tip regularly for wear, especially on abrasive aggregates.
Check the pilot drill tip is undamaged before fitting
Insert the A Taper pilot drill into the drive spigot of the core system
Mount the core barrel over the pilot, ensuring it seats fully on the drive
Mark the hole centre clearly on the surface before positioning
Hold the core barrel square to the surface and apply light pressure
Start at reduced speed to allow the pilot to locate before the core engages
Once the core is tracking cleanly, increase to working speed
Withdraw periodically on deeper cuts to clear dust and check the pilot for wear
Will this pilot drill fit all diamond core systems?
It fits A Taper drive systems only. B Taper and other drive standards use different pilots, so check your core barrel and drive specification before ordering. A Taper is widely used across standard masonry coring equipment.
How long should a pilot drill last?
It depends entirely on what you're drilling into. On softer brick it will last a long time. On hard aggregate concrete or engineering brick, expect faster wear on the tip. At this price it makes sense to keep a spare rather than be caught short mid-job.
Do I need a pilot drill for every core job?
Not always, but on hard or uneven surfaces it makes a real difference. Starting a core without a pilot on rough concrete or angled brickwork risks the barrel skating off line before the diamonds engage, which can damage the barrel and give you a misplaced hole.
Manufactured from hardened steel to withstand the load and abrasion of locating a diamond core barrel under drilling pressure. The A Taper shank provides a secure, standardised connection to compatible drive systems. Designed to protrude ahead of the core barrel at the start of the cut, establishing a centre point that keeps the assembly on line until the diamond segments are fully engaged with the substrate.
Taper Type
A Taper
Size
13mm
Material
Hardened steel
Product Type
Diamond Core Pilot Drill
SKU
DC-PILOT-T
Product Type
Diamond Core Pilot Drills & Drifts
Size
13
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