| Product Specifications |
Diameter 5 1/4" (133mm) Bearing type Rubber sealed bearing Cutting tooth type Steel tooth/milling tooth Drilling circulation type Mud circulation Connection thread type 3 1/2 reg male thread Gear diameter protection (diameter protection) None Back protection None |
| Operation Parameters | |
| Drilling Speed(r/min) | 180-60 |
| Drilling Pressure(KN) | 40-113 |
| Applicable Stratum | Soft formations with low compressive strength, such as mudstone, gypsum, rock salt, soft shale, soft limestone, etc. |