YSJ Type Hydraulic Drilling Jar

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 YSJ203B YSJ178B YSJ159B YSJ121B YSJ114B
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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