Complaint
The YJ type one-way shock absorber (bumper) is used during drilling operation. It helps to absorb any shock and vibration originating from the drill string while drilling. The benefits of using the shock absorber are firstly, it helps to enhance service life of drill bit and drill tools, secondly, it improves drilling speed and efficiency, and finally, it aid in prevention against bit bounce in drilling operation.
The one-way shock absorber effectively absorbs and reduces shock and vibration in the drill stem by means of elastic deformation of the hydraulic oil under external force. Its main advantages are its simple structure, its reliable working performance and its ease of operation and maintenance.| Model | YJ46C | YJ62C | YJ70C | YJ80C | Y94C |
| Product Code | 1408000 | 1410000 | 1413000 | 1415000 | 1417000 |
| O.D. (mm) | 121 | 160 | 178 | 203 | 241 |
| I.D. | 38 | 47 | 57 | 64 | 70 |
| Max.Stroke (mm) | 100 | 120 | 120 | 150 | 150 |
| Max.Bit Weight (kN) | 250 | 343 | 392 | 450 | 540 |
| Tensile Strength (kN) | 1000 | 1500 | 1500 | 2000 | 2000 |
| Ambient Temperature (°C) | -40~150 | -40~150 | -40~150 | -40~150 | -40~150 |
| Connection | NC38 | NC46 | NC50 | 6 5/8 REG | 7 5/8 REG |
| Pull-down Overall Length (mm) | 3760 | 4100 | 3800 | 4100 | 3820 |
| Weight (kg) | 247 | 400 | 560 | 740 | 1100 |
Tianhe Oil Group Huifeng Petroleum Equipment Co., Ltd is a modernized medium-scale enterprise specialized in production of oil and gas tools.
As an API-Certified established manufacturer and supplier of a comprehensive range of downhole equipment with related accessories, we are committed to providing the highest Quality products for the Petroleum and natural gas industry since 1973.
Tianhe Oil Group strongly believes and promotes Total Quality Management, implement the ISO quality management system and HSE management system and API Standard, which has been deeply implanted into every person's thought and carried out into every aspect of work.
Our manufacturing facilities are well equipped with four automated induction heat treatment lines and dozens of other types of heat treatment ovens and well furnaces to ensure full coverage of heat treatment requirements by different products to achieve the required mechanical properties.
In order to ensure the quality consistency and interchangeability of high precision components, Tianhe has introduced WFL 5-axis Linkage Turning & Milling Machining Center from Austria, Mazak's turn milling machining center from Japan and the Haas vertical machining center from USA. These processes are facilitated with precise quality inspection equipment such as the Brunker OES Metal Analyzers from Germany, Ultrasonic and Magnetic Powder Flaw Detector and high precision Hexagon Three Coordinate Measuring Machine and Farco Portable Three Coordinate Measuring Machine.
So far, Tianhe Oil Group has established strong business relationships with over 200 international oil & gas companies in supporting the top 50 oil producing countries.
We take pride in delivering superior performances and reliability. Our objective is to exceed your expectations, improve your economics and be an integral part of your strategies.
