Diamond Diamond Core Drill Bit – Core Drill Bit Segment

Johnson Tools 6-Type Diamond Drilling Segments | For Heavily Reinforced Concrete Core Bits

In professional core drilling, a single segment shape cannot solve the vast regional variances in aggregate hardness and steel reinforcement density. Johnson Tools supplies 6 specialized diamond segment configurations tailored specifically for professional Retipping Workshops and heavy-duty drilling contractors. By matching exact geometric profiles to your specific job-site parameters, we empower distributors to optimize penetration speed and maximize tooling lifespan when cutting through Heavily Reinforced Concrete. Engineered with a premium cobalt-based matrix, our segments are strictly calibrated for seamless high-frequency silver brazing.

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Dimensional data	≤127	≥132
Dimensional data	Segment Spec. L x T x H
Normal Type	22x4x9	22×4.5×9
Great Wall Type	23x4x10	23×4.5×10
Corrugated tooth	23x4x9	23×4.5×9
Gear tooth	23x4x10.5	23×4.5×10.5
Dotted tooth	23x4x10.5	23×4.5×10.5
Roof tooth	23x4x10.5	23×4.5×10.5

1. Roof Top (V-Shape)
- Engineering Profile: Pointed crest minimizes initial surface contact area.
- Target Application: Instant Starting & Positioning. Centers the drill bit immediately upon engagement, completely preventing bit wandering or vibration on the first cut.
2. Turbo (Grooved)
- Engineering Profile: Integrated lateral relief grooves across the segment body.
- Target Application: Deep Hole Coring. Rapidly flushes out dense slurry and reduces side-wall friction, enabling high-speed penetration in ultra-hard concrete.
3. Great Wall (Ladder)
- Engineering Profile: Corrugated profile providing aggressive, multi-level biting edges.
- Target Application: Extreme Hard Aggregates. Specifically engineered to fracture and slice through dense river rock, flint, and high-psi cured concrete.
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4. Sandwich (Concave Wear)
- Engineering Profile: Constructed with a softer center matrix and harder outer walls, enforcing a natural “concave” wear pattern.
- Target Application: Continuous Self-Sharpening. Keeps fresh diamond grit constantly exposed, ensuring the bit remains razor-sharp without glazing over.
5. Normal (Flat)
- Engineering Profile: Classic, robust solid geometry offering the maximum diamond volume per segment.
- Target Application: Maximum Operational Lifespan. The industry standard for general masonry and standard-grade concrete coring where longevity is the primary KPI.
6. Mesh (Dimple)
- Engineering Profile: Dimpled surface texture significantly reduces side-drag and rotational torque.
- Target Application: Low-Power Rigs & Water-Restricted Jobs. Ideal for lower-horsepower handheld core drill motors or jobsites operating with limited water flood coolant.
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