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Drilling Jars
Series 341 380 447 339 474 340 450 336-20 354 381
Tool O.D. (inches) 4.75 4.75 6.25 6.5 6.5 6.75 7 8 9 9.5
(+API Drill Collar Tolerance) (mm) 121 121 159 165 165 171 178 203 229 241
Max. Recom'd Hole Diameter (inches) 7 7/8 7 7/8 9 7/8 9 7/8 12 1/4 12 1/4 17 1/2 26 26
Hole Openers Not Recommended (mm) 200 200 251 251 311 311 445 660 660
Tool I.D. (inches) 2 2.25 2.25 2.25 2.75 2.5 2.5 2.81 2.81 2.81
Tool I.D. (mm) 51 57 57 57 70 64 64 71 71 71
Length - latched (feet) 12.5 12.7 16.3 16.3 18.5 15 15 15.5 15 15
Length - latched (m) 3.8 3.9 5 5 5.6 4.6 4.6 4.7 4.6 4.6
Weight (lbs) 575 550 1300 1400 1500 1400 1540 2200 2700 3000
Weight (kg) 260 250 590 640 680 640 700 1000 1200 1400
Stroke Up (inches) 4 4 4.5 4.5 10 4.5 4.5 5 5 5
Stroke Up (mm) 102 102 114 114 254 114 147 127 127 127
Stroke Down (inches) 4 4 6 6 6 6 6 6 6 6
Stroke Down (mm) 102 102 152 152 152 152 152 152 152 152
Preset Release Up (Down = 45% of Up) STD (lb) 40000 40000 90000 90000 90000 90000 90000 95000 100000 100000
Preset Release Up (Down = 45% of Up) STD (daN) 18000 18000 40000 40000 40000 40000 40000 42000 44000 44000
Preset Release Up (Down = 45% of Up) MAX (lb) 55000 55000 140000 140000 140000 140000 140000 150 155000 155000
Preset Release Up (Down = 45% of Up) MAX (daN) 24000 24000 62000 62000 62000 62000 62000 67000 69000 69000
Max Load During Hydraulic Delay (lb) 85000 75000 160000 160000 180000 190000 190000 220000 250000 250000
Max Load During Hydraulic Delay (daN) 38000 33000 71000 71000 80000 85000 85000 98000 111000 111000
Max Tensile Load After Jarring (lb) 416000 354000 755000 755000 865000 828000 828000 965000 1225000 1225000
Max Tensile Load After Jarring (daN) 185000 157000 336000 336000 385000 368000 368000 429000 545000 545000
Max Torsional Load - To Yield Body Connections (lb-ft) 16000 16000 41000 41000 41000 40000 40000 68000 110000 112000
Max Torsional Load - To Yield Body Connections (Nm) 22000 22000 56000 56000 56000 54000 54000 92000 149000 152000
Pump Open Area (in?) 6 6.5 9.6 9.6 11 11 11 14.2 15.9 15.9
Pump Open Area (cm?) 39 42 62 62 71 71 71 92 103 103