Hydraulic Drilling Jar
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The YSJ type hydraulic drilling jar works by building up hydraulic pressure and releasing it quickly to free your drilling equipment. The workover tool produces better results when used with ZJS type drilling tools.
Specifications| Parameter/ Type | |||||
| OD(mm) | 203 | 178 | 159 | 121 | 114 |
| ID(mm) | 70 | 57 | 57 | 38 | 38 |
| work stroke(mm) | 390 | 380 | 380 | 290 | 289 |
| thread conn. | 6 5/8REG | NC50 | NC50 | NC38 | NC31 |
| Max. work torque(kN.m) | 23.5 | 19.6 | 15 | 7.8 | 4.9 |
| Max. jarring lifting tons(T) | 800 | 750 | 710 | 300 | 200 |
| sealing pressure(MPa) | 20 | 20 | 20 | 20 | 20 |
| Highest working pressure (℃) | 150 | 150 | 150 | 150 | 150 |
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