Key Specifications
| Model | SPD‑94/200/400 | Bit Type | Spiral-Wing PDC Rock Drill Bit |
| Borehole Diameter | 94–400 mm (Custom Sizes Available) | Matrix Material | High-Strength Tungsten Carbide Matrix + Alloy Steel Base |
| Cutter Structure | 15° Negative Rake PDC Cutters on Spiral Wings | Connection | R32 / T45 Thread (OEM Customization Available) |
| Compatible Rigs | EBZ Roadheaders / Underground Gas Drainage Rigs | Core Diameter | Non-Coring |
| Drilling Medium | Mud / Water / Gas-Rich Coal | Certification | ISO 9001, SY/T5217‑2020, MSHA-Compliant |
Technical Features
| Cutter Layout | 3 or 4 Spiral Wings with Multi-Row Embedded PDC Cutters | ||
| Drilling Efficiency | 2.6 m/hr in Water-Rich Soft Coal Layers (Up to +30%) | ||
| Service Life | 20% Longer vs. Flat-Wing PDC Bits in Wet Conditions | ||
| Core Recovery | N/A (Designed for Gas Venting & Drainage Applications) | ||
| Bonding Technology | High-Precision Brazing + Surface Heat Treated Wings | ||
Model Guide
| Model | Formation Type | Optimal RPM | Applications |
|---|---|---|---|
| SPD‑94 | Soft Coal / Gas Drainage Layer | 150–300 rpm | Shallow Methane Venting in Water-Rich Strata |
| SPD‑200 | Medium Hardness Coal Seams | 150–300 rpm | Mid-Depth Drainage and Deformation Monitoring |
| SPD‑400 | Composite / Water-Bearing Coal Strata | 150–300 rpm | Deep Gas Extraction and Anti-Clogging Operations |
