Stone Core Bit Diamond Segments for Granite, Marble & Engineered Stone

1. Professional Segments for Stone Core Bit Retipping

The Alskar Stone Core Bit Diamond Segment Series is designed for stone fabrication shops, professional retipping workshops and OEM core bit manufacturers.

Unlike concrete coring, where aggregate hardness and reinforcement level dominate segment selection, stone fabrication places greater emphasis on:

material hardness, brittleness, drilling speed, edge quality and hole finish.

For this reason, Alskar stone core bit segments are matched according to the stone being drilled, the core bit barrel design and the required balance between cutting speed and usable life.

2. Three Material Formula Platforms

3. S1 — Granite Core Bit Formula

sharp cutting + active diamond exposure + drilling stability

The granite-specific formulation is designed to maintain active diamond exposure in dense natural stone, supporting fast penetration and controlled drilling without excessive polishing of the segment surface.

Design for

• Granite
• Hard Natural Stone
• Selected Dense Stone

4. S2 — Marble Core Bit Formula

The marble-specific formulation maintains a sharp cutting action with controlled drilling pressure, helping reduce edge chipping and improve hole finish in marble and other softer natural stone.

Design for

• Marble
• Limestone
• Travertine
• Onyx

Features：

• Low Chipping
• Smooth Hole Edge
• Fast Penetration

5. S3 — Engineered Stone Formula

Design for:

quartz surfaces
engineered stone
artificial stone

The engineered-stone formula is designed for dense quartz-based and artificial stone materials where cutting control, heat management and clean hole edges are important.

 

6. Core Bit Diameter Range

Standard Range: 20–200mm
Large Diameter: Up to 600mm Custom

7. Recommended Global Specification Platform

Reference dimensions only. Final segment width and quantity must be matched to the barrel wall thickness, diameter and required side clearance.

 

8. Segment Height

7mm / 8mm / 10mm

8mm
→ Balanced professional standard

10mm
→ Extended usable diamond depth

7mm
→ Faster cutting / economy or selected configurations

9. Segment Design Options

10. Roof-Top Design

The roof-top profile reduces the initial contact area, helping the core bit establish the drilling position more easily before the segment wears into its normal working profile.

11. Turbo Segment

Turbo grooves create additional cutting edges and slurry channels, helping improve drilling speed, coolant flow and debris evacuation.

 

12. Precision Diamond Distribution

Precision Diamond Placement

Consistent Diamond Exposure
Improved Drilling Efficiency
High-Production Fabrication

13. Wet & Dry Drilling

Wet / Dry — Formula Dependent

Wet drilling is recommended where possible for improved cooling, slurry removal and edge quality. Dry-drilling formulas are available for selected stone fabrication applications and compatible equipment.

14. Segment Quantity

20mm → 2 segments
32mm → 4
60mm → 5
83mm → 7
102mm → 9
132mm → 10
203mm → 14
300mm → 24
600mm → 40。

Segment Quantity: Core Bit Diameter & Barrel Design Specific

 

15. Retipping Application

Designed for professional retipping of reusable stone core bit barrels. The barrel should remain round, structurally sound and suitable for reuse before new segments are attached.

16. OEM Core Bit Manufacturing

Alskar Stone Core Bit Segments are also available for OEM production of new core bits, with segment dimensions, formulas and geometries customized to barrel size, drilling material and target performance.

 

17. Attachment Method

Brazing / Laser Welding — Application Dependent

18. Machine Compatibility

Angle Grinder / Stone Drill — selected small sizes
Handheld Stone Core Drill
Stone Fabrication Drill
Core Drilling Machine / Rig — larger sizes

19. Quality Grade

S1 / S2 / S3 = Material Formula
Standard / Premium / Supreme = Performance Grade

20. Key Selling Points

Three Stone-Specific Formulas

Granite, Marble and Engineered Stone formulations available.

20–600mm Coverage

Standard fabrication sizes plus large custom diameters.

Multiple Segment Designs

Flat, Roof, Turbo, Turbo Roof and Precision options.

Clean Stone Drilling

Designed for fast penetration and controlled hole-edge quality.

Wet / Dry Options

Formulas available for different stone fabrication environments.

Retipping & OEM Ready

Suitable for replacement segment and new core bit manufacturing.

21. Final Product Specifications