1/4" Diamond Core Drill Bit with 3/8" Shaft - 6.5mm Granite & Stone Drilling Tool for Industrial Applications
6.5mm diamond core drill bits with sintered diamond segments designed for professional stone fabrication applications. These industrial-grade core bits feature a 3/8" shaft and are engineered for wet drilling operations on granite, marble, and concrete surfaces.
| Parameter | Value |
|---|---|
| Outer Diameter | 6.5mm (1/4") |
| Shank Size | 3/8" shaft |
| Segment Height | 8mm |
| Segment Thickness | 2mm |
| Total Length | 83mm |
| Drill Depth | 50mm (2") |
| Segment Type | Crown type |
| Drilling Method | Wet drilling |
- Sintered diamond segments for superior cutting performance
- Designed for granite, marble, and concrete applications
- Suitable for countertop and kitchen fabrication
- Industrial-grade construction for business use
- Compatible with materials containing less than 5mm steel bar
Diamond core bits operate through a milling process rather than traditional cutting. During manufacturing, individual diamond crystals are exposed on the segment surfaces, performing the milling work while being securely held by the metal matrix. The bond material supports each diamond crystal until it wears out, allowing new crystals to emerge and maintain cutting efficiency.
We accept OEM orders for all products and can incorporate buyer logos according to customer requirements.
Each product undergoes strict quality control checks. We maintain comprehensive production data and follow established formulas to ensure consistent quality across all orders. With 15 years of manufacturing experience, we provide products tailored to different market requirements.
Air freight for orders between 45-100kg, sea freight for orders above 100kg, and courier services (TNT, DHL, FedEx, UPS) for smaller trial orders with door-to-door delivery.
Minimum order quantities are negotiable. Delivery typically ranges from 15 to 45 days depending on order volume.
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