6 Blade PDC Bit – Engineered for Hard Rock & High Abrasion
Drilling in hard rock formations such as granite, basalt, or highly abrasive limestone presents constant challenges: low penetration rates, excessive bit wear, frequent tripping, and rising operational costs. Standard PDC bits often struggle with impact damage and uneven cutter wear, leading to costly downtime.
Our 6 blade PDC drill bit is purpose-built to solve these problems. With a six-blade symmetrical design, premium oilfield-grade cutters, and optimized hydraulics, this bit significantly improves hole quality, extends service life, and lowers your cost per meter – even in the most demanding hard rock conditions (F≤11). Perfect for water well drilling bit applications, PDC bits for geothermal applications, and mining projects.
Why Choose a 6 Blade PDC Bit?
1. Superior Stability & Hole Quality
A 6 blade configuration distributes cutting forces more evenly than 4 or 5 blade bits. This reduces lateral vibration and whirl, resulting in straighter holes, smoother borehole walls, and less deviation – critical for deep water wells and geothermal boreholes.
2. Higher Rate of Penetration (ROP) in Hard Rock
More blades mean more cutters actively shearing the rock. With optimized cutter layout, our 6 blade PDC bit achieves a 15-25% faster ROP compared to 5 blade designs in F≤11 formations. Faster drilling reduces rig time and fuel costs.
3. Longer Life & Lower Cost per Foot
The additional blades reduce load on each cutter, minimizing impact damage and thermal fatigue. Field data shows that 6 blade bits last up to 30% longer in abrasive hard rock, drastically reducing bit change frequency and non-productive time.
4. Optimized for Hard & Abrasive Formations
While 4 blade bits are suitable for soft to medium formations, they lack the cutter density needed for hard rock. Our 6 blade bit provides the ideal balance of cutter density, junk slot area, and impact resistance – making it the preferred PDC bit for hard rock and abrasive intervals.
| Feature | 4 Blade | 5 Blade | 6 Blade (Ours) |
|---|---|---|---|
| Cutter density | Low | Medium | High |
| Stability in hard rock | Poor | Moderate | Excellent |
| ROP in F≤11 | Slow | Medium | Fast |
| Wear life in abrasives | Short | Medium | Long |
| Best application | Soft-medium | Medium-hard | Hard / abrasive |
5. Improved Hydraulics & Cuttings Removal
Our advanced hydraulic design ensures adequate flow area and optimized nozzle placement, keeping the bit face clean and cutters cool – even in high-pressure geothermal environments.
Applications
Suitable formations: Limestone, dolomite, basalt, granite, and other hard/abrasive rocks with rock firmness coefficient F≤11. Specifically designed for PDC bit for hard rock and PDC bits for geothermal applications where high temperature and impact resistance are critical.
Product Advantages
Oilfield-Grade PDC Cutters
Premium 16mm or 19mm cutters with advanced diamond table thickness and leached substrate for superior wear and impact resistance.
Six-Blade Symmetrical Matrix Body
High-strength tungsten carbide matrix offers excellent erosion resistance and structural integrity under high torque and WOB.
Optimized Cutter Layout & Gauge Protection
Strategic back-reaming and gauge protection cutters maintain hole diameter and prevent gauge wear, extending bit life.
Advanced Nozzle System
Interchangeable nozzles (3-4 ports) allow customized flow rates for optimal bottom-hole cleaning and cutter cooling.
Technical Specifications
Standard Bit Diameter (mm)
- 152 / 165 / 190
- 216 / 240 / 270
- 311
- Custom diameters available
Thread Types
- REG: 2 3/8, 2 7/8, 3 1/2, 4 1/2
- NC: NC23, NC26, NC31, NC38
- Other: Z-50, Custom Threads
Drilling Method: Rotary drilling with mud, air, or water circulation. Recommended parameters: 60-150 RPM, WOB 10-50 kN depending on diameter and formation.
OEM & Customization – Built for Your Exact Needs
No two drilling projects are the same. We offer full customization: cutter grade (impact-resistant or abrasion-resistant), blade profile (flat, parabolic, double-cone), gauge protection, and any API or proprietary thread. Provide your thread parameters or drawings, and we will engineer the optimal 6 blade PDC bit for your rig, rock type, and depth. Custom hardfacing and logo also available.
Lead time for custom bits: 15-25 days. Standard diameters in stock: ship within 5 days.
Why Choose Us – Your Trusted PDC Bit Manufacturer
ISO 9001:2015 Certified
Direct factory with strict quality control – every bit is inspected and flow-tested before shipment.
15+ Years Export Experience
Supplied to North America, Europe, Australia, Africa, and Middle East. Proven performance in global hard rock projects.
Technical Support
Our drilling engineers provide application guidance, parameter recommendations, and post-run analysis.
Ready to Boost ROP and Cut Drilling Costs?
Get a no-obligation quote for our 6 blade PDC bit – tell us your diameter, thread, and formation type. We’ll respond within 24 hours with technical recommendations and pricing.
Or use the contact cards below – we respond within 24 hours on business days.
Frequently Asked Questions
1. What is the difference between a 6 blade PDC bit and a 4 or 5 blade bit?
A 6 blade bit has higher cutter density, which distributes load more evenly, resulting in better stability, reduced vibration, longer bit life, and faster penetration in hard/abrasive formations. For soft formations, fewer blades may be preferred, but for F≤11 hard rock, the 6 blade design is optimal.
2. Can this bit be used for geothermal drilling?
Yes. Our 6 blade PDC bit is specifically engineered for PDC bits for geothermal applications, handling high temperature, abrasive, and fractured formations. Premium cutter grades and matrix body provide excellent thermal stability and impact resistance.
3. How much can I expect to save on cost per foot?
Field data from limestone and granite wells shows a 15-30% reduction in cost per foot compared to 5 blade bits, mainly due to longer bit life and fewer trips. Contact us for a specific projection based on your rock type and drilling parameters.
4. Do you offer custom threads and non-standard diameters?
Absolutely. We manufacture any API or proprietary thread, and diameters from 98mm to 445mm. Provide a drawing or thread specification for a quick quotation. MOQ for full custom bits is typically 2-3 pieces.
5. What is the lead time for shipping to North America or Europe?
Standard diameters in stock: ship within 5-7 days. Air freight: 5-8 days; sea freight: 25-35 days. Custom bits: 15-25 days production.
Our Manufacturing Excellence
From precision machining to final assembly — every drill bit is crafted in our ISO 9001 certified facility.
