Designed to deliver hydraulic delay when jarring up or down equipped with mechanical lock in each direction.
The HJML incorporates a latch mechanism to keep the jar locked in the neutral position and eliminate unexpected jarring while tripping or racking back on the derrick.
| SDT-HJML475 | SDT-HJML650 | SDT-HJML800 | SDT-HJML950 | |
| Nominal OD (A), in | 4.88 | 6.61 | 8.15 | 9.49 |
| Thru Bore (B), in | 2.2 | 2.76 | 2.76 | 3 |
| Length in fixed position, ft | 23.13 | 24.1 | 24.93 | 25.26 |
| Free stroke after hydraulic delay during extension, in | 7.28 | 7.48 | 7.87 | 7.87 |
| Free stroke after hydraulic delay during compression, in | 7.28 | 7.48 | 7.87 | 7.87 |
| Hydraulic delay time*, sec | 30 – 150 | 30 – 150 sec | 30 – 150 sec | |
| Nominal Up latch setting, lbs | 55 000 | 130 000 | 154 300 | 165 000 |
| Nominal Down latch setting, lbs | 35 900 | 70 500 | 99 200 | 108 000 |
| Pump open area, in.sq. | 11.78 | 24.8 | 30.7 | 41.2 |
| Maximum tensile (compressive) load during hydraulic delay, lbs | 77 150 | 176 370 | 242 500 | 242 500 |
| Tensile yield, lbs | 286 600 | 617 290 | 804 700 | 1 197 100 |
| Maximum torque, ft-lbs | 13 000 | 22 120 | 60 700 | 122 960 |
| Thread connections | NC38 | NC50 | 6 5/8 Reg | 7 5/8 Reg |
| Make up torque, ft-lbs | 8 680 – 10 120 | 18 400 – 19 900 | 47 000 – 50 600 | 57 850– 65 100 |
| Maximum operating temperature ***, °F | 248 | 248 | 248 | 248 |
| Weight, lb | 930 | 1 800 | 3 140 | 4 300 |
| Time between service, hours below rotary table**, hours | 500 | 750 | 750 | 750 |
* Actual values are supplied in tool test report
** Tool should be sent for maintenance every 250 hours when used in environment with chloride content higher than 50,000 mg/l
*** As per special request tool can be equipped with seals of up to 175 deg C (350 deg F)
| SDT-HJML475 | SDT-HJML650 | SDT-HJML800 | SDT-HJML950 | |
| Nominal OD (A), mm | 124 | 168 | 207 | 241 |
| Thru Bore (B), mm | 56 | 70 | 70 | 76 |
| Length in fixed position, mm | 7 050 | 7 350 | 7 600 | 7 700 |
| Free stroke after hydraulic delay during extension, mm | 185 | 190 | 200 | 200 |
| Free stroke after hydraulic delay during compression, mm | 185 | 190 | 200 | 200 |
| Hydraulic delay time*, sec | 30 – 150 | 30 – 150 sec | 30 – 150 sec | |
| Nominal Up latch setting, kgf | 25 000 | 59 000 | 70 000 | 75 000 |
| Nominal Down latch setting, kgf | 16 300 | 32 000 | 45 000 | 49 000 |
| Pump open area, sm.sq. | 76 | 153 | 198 | 266 |
| Maximum tensile (compressive) load during hydraulic delay, kgf | 35 000 | 80 000 | 110 000 | 110 000 |
| Tensile yield, kgf | 130 000 | 280 000 | 365 000 | 543 000 |
| Maximum torque, kgf*m | 1 800 | 3 000 | 8 400 | 17 000 |
| Thread connections | NC38 | NC50 | 6 5/8 Reg | 7 5/8 Reg |
| Make up torque, kgf*m | 1 200 – 1 400 | 2 500 – 2 700 | 6 500 –7 000 | 8 000 –9 000 |
| Maximum operating temperature ***, °C | 120 | 120 | 120 | 120 |
| Weight, kg | 422 | 820 | 1 425 | 1 950 |
| Time between service, hours below rotary table**, hours | 500 | 750 | 750 | 750 |
* Actual values are supplied in tool test report
** Tool should be sent for maintenance every 250 hours when used in environment with chloride content higher than 50,000 mg/l
*** As per special request tool can be equipped with seals of up to 175 deg °C (350 deg °F)
