Double-Way Shock Absorbers
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Our SJ type double-way shock absorbers are a kind of two-way shock absorbing tool which are used to slow down or eliminate vertical and horizontal shock from the drill string. They reduce damage caused by vibrations in the drill bit, drilling tool and surface drilling tool. The double-way shock absorbers allow for a faster drilling speed and reduction of drilling costs.
Specifications| Parameter/ Type | |||||
| OD(mm) | 229 | 203 | 178 | 160 | 121 |
| ID(mm) | 71 | 64 | 57 | 47 | 38 |
| Pull down overall length(mm) | 5630 | 5800 | 5590 | 5150 | 4490 |
| Max. stroke(mm) | 120 | 120 | 100 | 120 | 120 |
| Thread conn. | 7 5/8REG | 6 5/8REG | NC50 | NC46 | NC38 |
| Tensile load(kN) | 1960 | 1960 | 1500 | 1500 | 1000 |
| Max. torque | 20 | 20 | 15 | 15 | 10 |
| Max. bit weight | 540 | 480 | 400 | 340 | 200 |
| Ambient temperature ( ℃ ) | -40~150 | -40~150 | -40~150 | -40~150 | -40~150 |
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