S1608 is a 15.88 mm (≈16 mm) high-performance planar PDC cutter, composed of a micron-grade diamond layer and a high-strength tungsten carbide substrate, sintered under ultra-high temperature and pressure (1400–1600°C, 5–6 GPa). It features a 2.1 mm diamond thickness, 0.4 mm chamfer, and 8.0 mm total height. Designed for soft to medium-hard formations (compressive strength <120 MPa), it balances superior wear resistance, impact toughness, and thermal stability—making it the mainstream choice for oil/gas, water well, mining, and geothermal drilling.
| Model NO. | S1608 | Length | Standard |
| Type | PDC Cutter/Insert/Button | Material | Tungsten Carbide |
| Usage | Well Drilling, Oilfield, Gas Field, Mining Industry, Construction | Wear Resistance | Super High |
| Thermal Stability | 750°C, 800°C, 850°C, 900°C | Production Process | Hthp Sintering |
| Diamond Grade | PCD | Substrate Material | Tungsten Carbide |
| Total Height | 5~34 | Tolerance | ±0.02mm |
| Impact Toughness | Excellent | Certification | ISO 9001 |
| Shape | Round | Matched Drill Bit | PDC Drill Bits, Core Bits, Tricone Bits, Drill Pipes (We also offer custom drill bit manufacturing) |
| MOQ | 100PCS | Specification | 1916 |
| Transport Package | Customized, Carton/Wooden Case | Origin | China |
| Trademark | Ninestones | Production Capacity | 10000pieces/Year |
Soft formations: mudstone, shale, coal measures, clay (<60 MPa)
Medium-hard formations: sandstone, limestone, marble (60–120 MPa)
Low to medium abrasive formations (quartz content <30%)
Core Product Advantages
Superior Wear Resistance
Diamond layer hardness reaches 8000–10000 HV with excellent self-sharpening; new cutting edges keep exposing during wear, delivering 30× longer life than carbide.
High Impact & Vibration Resistance
Tungsten carbide substrate absorbs impact loads; corrugated interface enhances bonding strength, preventing chipping and fracture under high WOB/RPM.
Excellent Thermal Stability
Heat resistance ≥700°C with low residual stress; resists deformation/delamination at high temperatures, ideal for deep wells and continuous operations.
Efficient Rock Breaking, Higher ROP
Shear-based cutting (better than roller cone’s crushing/grinding); improves rate of penetration by 30–50% and reduces round trips.
Precise Dimensions & Perfect Compatibility
Diameter 15.88±0.05 mm, height 8.0±0.1 mm, standard chamfer; fully compatible with mainstream 16 mm blades/PDC bits for stable installation.
Lower Total Cost
Longer service life per piece, more footage, fewer shutdowns—reducing cost per meter and maximizing long-term ROI.
Precise Size Specifications
S1608 standard dimensions are 15.88 mm diameter, 8.00 mm total height, 2.1 mm diamond layer thickness, and 0.4 mm diamond chamfer. Strict tolerances are maintained at ±0.02 mm for diameter and ±0.02 mm for height, ensuring consistent batch quality and interchangeability. It fits 16 mm series PDC bits (5 1/2″–8 1/2″ for oil/gas/water wells), with minor dimensional adjustments available on request.
Material and Core Technology
Core Material
Made from 99.9% high-purity micron diamond powder and ultra-fine grain WC-Co carbide (6–8% cobalt) for balanced hardness, toughness, and thermal conductivity.
HPHT Sintering
Sintered at 1500°C, 5.5 GPa to form a metallurgical bond between diamond and carbide—no weak layers, no delamination, bonding strength ≥2.5 GPa.
Quality Control
All production complies with ISO9001, ISO14001 and ISO45001 international system standards. Three-level inspection is carried out on raw materials, semi-finished products and finished products. All performance indicators including impact toughness, high temperature resistance and wear resistance reach stable standards. Factory direct supply ensures fully controllable quality.
Application Field
Oil & Gas Drilling
Suitable for shallow to medium-deep well operations on land. Works well in tight sandstone, interbedded strata and gravel-bearing formations. High temperature resistance avoids carbonization and delamination, reducing bit replacement and overall drilling cost.
Mining Drilling & Exploration
Ideal for mineral prospecting, tunnel drilling and mine water well projects. Perfect for high-abrasive hard rock such as granite and quartzite. Excellent impact resistance prevents edge chipping, serving longer life in fractured mining formations.
Geological Exploration & Sampling
High dimensional accuracy ensures stable drilling and regular borehole. Guarantees complete formation core sampling, fully meeting high-precision geological survey and resource exploration requirements.
Water Well & Infrastructure Engineering
Widely used in deep water wells, pile foundation drilling and construction projects. Efficient penetration in common rock layers, low wear and stable performance for long-time continuous site operation.
Universal Bit Matching
Compatible with mainstream PDC bits, core bits and drilling tools with good interchangeability. Custom sizes and chamfers are available to meet non-standard matching demands for different projects.
Customized Service
Size Customization: Diameter 15.88–16.0 mm, total height 7.5–8.5 mm, diamond layer 1.8–2.4 mm, chamfer 0.3–0.5 mm
Performance Customization: High-wear type (low-cobalt + thick diamond), impact-resistant type (reinforced substrate + large chamfer), high-temperature type (low residual stress)
Surface/Structure: Special chamfers (0.5×45°), curved/angled surfaces, anti-wear/oxidation coatings
Batch & Packaging: Custom anti-static boxes + moisture-proof bags + hard cartons; provide COC/COA quality certificates
FAQ
Q: What is the difference between S1608 and S1613?
A: S1608 has 8 mm total height and 2.1 mm diamond layer, optimized for soft–medium-hard, low–medium abrasive formations with high cost performance. S1613 has 13.2 mm total height and 2.4 mm diamond layer, for medium-hard–hard, highly abrasive formations with longer life and higher price.
Q: What are the recommended WOB and RPM ranges?
A: WOB 15–30 kN per cutter, RPM 80–150 RPM. Use low WOB + high RPM for soft mudstone; high WOB + low RPM for medium-hard sandstone. Maintain mud flow 20–30 L/min for sufficient cooling.
Q: How to judge when the cutter fails and needs replacement?
A: Replace if: ① Diamond wear ≥0.5 mm, dull cutting edge, obvious ROP drop; ② Chipping ≥1 mm, severe vibration; ③ Delamination/cracks, abnormal high temperature.
Q: What is the maximum operating temperature for S1608?
A: The cutter can continuously work up to 700°C without delamination or graphitization. For higher temperature wells, choose our high-temperature customized version.
Q: Can S1608 be reconditioned after wear?
A: Yes. Minor wear (<0.5 mm) can be re-ground and polished to restore sharpness. Severe wear or chipping requires professional reconditioning service; contact us for details.