Double-acting Mechanical-hydraulic Drilling Jar Type JYQ
Product Detailed
The double acting mechanical-hydraulic drilling jar type jyq is designed for drilling operation to apply an intensified force either up or down against a stuck portion of the drilling string. It incorporates the feature of both hydraulic and mechanical drilling jars, without of the inherent disadvantage of either type. Its unique design combines both a hydraulic time delay release and mechanical latch mechanism in one
relatively short,double acting drilling jar.
Type JYQ121 JYQ121II JYQ159 JYQ165 JYQ189 JYQ203 JYQ241
OD mm 124~241
ID mm 50.8~76.2
Up Stroke mm 227~232
Down Stroke mm 102~152
Working Torque kN.m 12.5~50
Max Tensile load kN 1300~5400
Max up Jarring kN 250~1400
Max down Jarring kN 200~460
Overall Length mm 1500~5300
Piston areas mm2 2516~17200