| Product Specification | |
| Diameter: | 215.9mm, 9 1/2” |
| Number of cones: | 4 |
| Core Diameter:: | Φ60mm |
| Connection Thread: | 5 1/2 IF |
| Bearing System: | Sliding Bearing |
| BearingSealing System: | Compound Seal |
| Number of Tooth Rows: | 21 rows |
| Cutting Teeth: | 164 |
| Outer Row Teeth: | 50 |
| Back Cone Teeth: | 74 |
| Palm Back Teeth: | 104 |
| Diamond Composite Teeth: | 20 |
| Drill Pressure: | 60~180KN |
| Rotation Speed: | 40~180RPM |
| Make-up Torque: | 16.3-21.7KN.M |
| Adaptation Formation): | High compressive strength, medium hard and high abrasiveness formations. |