The key component of a PDC bit is the polycrystalline diamond compact disc (cutter), which is synthesized from diamond micropowder and a binder under high pressure and high temperature. Its hardness approaches that of natural diamond, and its wear resistance significantly exceeds that of traditional steel‑tooth bits. The compact disc is attached to the steel body of the bit by brazing, forming the cutting teeth.
By design, two types are distinguished: matrix body and steel body. The matrix type is manufactured using powder metallurgy technology, where diamond particles are sintered into a single body, making it suitable for drilling soft to medium‑hard formations. The steel type is more suitable for hard formations, as the compacts are brazed directly onto the steel substrate.
Product Technical Specifications
| Parameter | Value |
|---|
| Name / Description | Matrix PDC bit 5½″ CM1305 |
| Nominal Size | 5½ inch (139.7 mm) |
| Model | CM1305 |
| Series | CM |
| Body Type | Matrix |
| Primary Cutter Size | 13 mm |
| Number of Wash Ports / Nozzles | 5 |
| Number of Blades | 5 |
| Make‑up Torque (kN·m) | 10.4 – 11.4 |
| Application | Water wells, oil wells, HDD (horizontal directional drilling), exploration, etc. |
| Weight | 23 kg |
| Certifications | SY/T5164, ISO 9001:2008 |
