Product Description
Product Description
Two different grades of Sucker Rod Couplings are available: T and SM. The manufacturing process of both the grades is the same with cold worked pre-stressed, roll-formed threads with the anti-galling coating. This process results in stronger/fatigue resistant threads.
The manufacturing inspection, the dimensions and the tolerances of the couplings match or exceed the specifications of the latest API standards.
Grade T Sucker Rod Couplings
These couplings are made up of 5140 alloy steel and are very resistant to hydrogen embrittlement.
Grade SM CO-HARD Sucker Rod Couplings
These couplings are made up of 5140 alloy steel and are very resistant to hydrogen embrittlement. In order to yield a strong metallurgical CZPT between the base metal of the coupling and the spray metal coating. Advanced thermal spraying technology is adopted to melt Ni alloy and other high wear-resisting materials on the blank surface of the collar after high temperature flame spraying, so as to reduce the friction coefficient between the anti-wear collar and the oil pipe to 0.01, which is an effective combination of high hardness and low friction, thus improving the service life of the rod and pipe in oil exploitation.
Product Application
Class T and Class SM coupling for sucker rods are manufactured as per API Specification 11B. For the thread cutting, we are using cold form rolled by displacing rather than by removing of material for making the coupling thread. The thread rolling cutting results in a compressive stress at the root of the thread, giving maximum strength to the traditional weak point of cut-thread couplings.
The coupling is coated using phosphate chemical treatment or black oxide on customer’s request.For Class SM coupling, the spray metal is a specification hardening process and is applied on the base metal.
The couplings are available in full size, slim hole and over size.Also, combination couplings are available for different diameters (sub-coupling) for both Class T and Class SM couplings.
We recommend changing sucker rod couplings after 3 make-ups, provided the connection threads have been inspected and deemed acceptable for reuse.
Features
1. Designed and manufactured according to API spec 11B.
2. The couplings are manufactured in grades SM and DES.
3. Increased wear and corrosion resistance.
4. Surface treatment includes black coating, phosphating or as per the customers requirement.
Technical parameter
|
OD |
Coupling OD |
Length |
Wrench length |
Wrench width |
|
|
mm |
in |
(mm- inch) |
(mm- inch) |
mm |
mm |
|
16 |
5/8 |
38.1(1.500) |
101.6(4.000) |
31.8 |
34.9 |
|
19 |
3/4 |
41.3(1.625) |
101.6(4.000) |
31.8 |
38.1 |
|
22 |
7/8 |
46.0(1.812) |
101.6(4.000) |
31.8 |
41.3 |
|
25 |
1 |
55.6(2.187) |
101.6(4.000) |
31.8 |
47.6 |
|
29 |
1 1/8 |
60.3(2.375) |
114.3(4.500) |
41.3 |
53.9 |
Product Photos
Company Profile
ZheJiang LIGHT FIR MACHINERY Co., Ltd(LFM) is located in CZPT Oilfield, ZheJiang Province, China.
LFM is a physical enterprise integrating mechanical processing and manufacturing and sales of special petroleum equipment. We have 2 cooperative production bases, which can produce OCTG and various accessories and tools.
The products we can provide include: Rig accessories and tools, OCTG, LinePipe, FRP Line Pipe, Artificial Lifting Equipment, Wellhead equipment, Valves, Pipe fittings, BOP, Downhole Tools etc. According to standards: API, ASTM, ASME, Ghost etc.
Our leading products: Casing & Tubing(API 5CT series, Tenaris Series), Valves(Gate Valve, Ball Valve, Check Valve, Globe Valve, Choke Valve; API 6A series, API 6D series, API 600 Series, and General Use Valves); BOP and BOP Spare parts; Drilling Tools etc.
LFM is also a professional supplier of WATER TREATMENT EQUIPMENT. We work together with the professional WATER TREATMENT EQUIPMENT manufacturer in China. The products we supply have been widely recognized by customers.
Our aim is “Use our professional services to make your business easier”. Therefore, we devote to providing customers with integrated solutions and strive to become your one-stop procurement platform in China.
Certifications
Packaging & Shipping
FAQ
Q1: What’s your packing?
A: Regular packing.
Q2: What’s your delivery?
A: Normally, about 30-45 days.
Q3: What are the shipping methods?
A: Ocean shipment to the port near from you; Air shipment to the shipment near from your company; Door to door service by international express.
Q4: What about the payment options?
A: In general, we accept T/T.
Q5: When can I get the price?
A: We usually quote within 24 hours after we get your inquiry. If you are very urgent to get the price,please call us or tell us in your email so that we will detail with your inquiry priority.
| After-sales Service: | 7X24 |
|---|---|
| Warranty: | 12months |
| Manufacturing Process: | Forging |
| Surface Treatment: | Polishing |
| Operation Pressure: | No |
| Material: | Alloy |
| Samples: |
US$ 5/Joint
1 Joint(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
Functions and Modifications of Couplings
A coupling is a mechanical device that connects two shafts and transmits power. Its main purpose is to join two rotating pieces of equipment together, and it can also be used to allow some end movement or misalignment. There are many different types of couplings, each serving a specific purpose.
Functions
Functions of coupling are useful tools to study the dynamical interaction of systems. These functions have a wide range of applications, ranging from electrochemical processes to climate processes. The research being conducted on these functions is highly interdisciplinary, and experts from different fields are contributing to this issue. As such, this issue will be of interest to scientists and engineers in many fields, including electrical engineering, physics, and mathematics.
To ensure the proper coupling of data, coupling software must perform many essential functions. These include time interpolation and timing, and data exchange between the appropriate nodes. It should also guarantee that the time step of each model is divisible by the data exchange interval. This will ensure that the data exchange occurs at the proper times.
In addition to transferring power, couplings are also used in machinery. In general, couplings are used to join two rotating pieces. However, they can also have other functions, including compensating for misalignment, dampening axial motion, and absorbing shock. These functions determine the coupling type required.
The coupling strength can also be varied. For example, the strength of the coupling can change from negative to positive. This can affect the mode splitting width. Additionally, coupling strength is affected by fabrication imperfections. The strength of coupling can be controlled with laser non-thermal oxidation and water micro-infiltration, but these methods have limitations and are not reversible. Thus, the precise control of coupling strength remains a major challenge.
Applications
Couplings transmit power from a driver to the driven piece of equipment. The driver can be an electric motor, steam turbine, gearbox, fan, or pump. A coupling is often the weak link in a pump assembly, but replacing it is less expensive than replacing a sheared shaft.
Coupling functions have wide applications, including biomedical and electrical engineering. In this book, we review some of the most important developments and applications of coupling functions in these fields. We also discuss the future of the field and the implications of these discoveries. This is a comprehensive review of recent advances in coupling functions, and will help guide future research.
Adaptable couplings are another type of coupling. They are made up of a male and female spline in a polymeric material. They can be mounted using traditional keys, keyways, or taper bushings. For applications that require reversal, however, keyless couplings are preferable. Consider your process speed, maximum load capacity, and torque when choosing an adaptable coupling.
Coupling reactions are also used to make pharmaceutical products. These chemical reactions usually involve the joining of two chemical species. In most cases, a metal catalyst is used. The Ullmann reaction, for instance, is an important example of a hetero-coupling reaction. This reaction involves an organic halide with an organometallic compound. The result is a compound with the general formula R-M-R. Another important coupling reaction involves the Suzuki coupling, which unites two chemical species.
In engineering, couplings are mechanical devices that connect two shafts. Couplings are important because they enable the power to be transmitted from one end to the other without allowing a shaft to separate during operation. They also reduce maintenance time. Proper selection, installation, and maintenance, will reduce the amount of time needed to repair a coupling.
Maintenance
Maintenance of couplings is an important part of the lifecycle of your equipment. It’s important to ensure proper alignment and lubrication to keep them running smoothly. Inspecting your equipment for signs of wear can help you identify problems before they cause downtime. For instance, improper alignment can lead to uneven wear of the coupling’s hubs and grids. It can also cause the coupling to bind when you rotate the shaft manually. Proper maintenance will extend the life of your coupling.
Couplings should be inspected frequently and thoroughly. Inspections should go beyond alignment checks to identify problems and recommend appropriate repairs or replacements. Proper lubrication is important to protect the coupling from damage and can be easily identified using thermography or vibration analysis. In addition to lubrication, a coupling that lacks lubrication may require gaskets or sealing rings.
Proper maintenance of couplings will extend the life of the coupling by minimizing the likelihood of breakdowns. Proper maintenance will help you save money and time on repairs. A well-maintained coupling can be a valuable asset for your equipment and can increase productivity. By following the recommendations provided by your manufacturer, you can make sure your equipment is operating at peak performance.
Proper alignment and maintenance are critical for flexible couplings. Proper coupling alignment will maximize the life of your equipment. If you have a poorly aligned coupling, it may cause other components to fail. In some cases, this could result in costly downtime and increased costs for the company.
Proper maintenance of couplings should be done regularly to minimize costs and prevent downtime. Performing periodic inspections and lubrication will help you keep your equipment in top working order. In addition to the alignment and lubrication, you should also inspect the inside components for wear and alignment issues. If your coupling’s lubrication is not sufficient, it may lead to hardening and cracking. In addition, it’s possible to develop leaks that could cause damage.
Modifications
The aim of this paper is to investigate the effects of coupling modifications. It shows that such modifications can adversely affect the performance of the coupling mechanism. Moreover, the modifications can be predicted using chemical physics methods. The results presented here are not exhaustive and further research is needed to understand the effects of such coupling modifications.
The modifications to coupling involve nonlinear structural modifications. Four examples of such modifications are presented. Each is illustrated with example applications. Then, the results are verified through experimental and simulated case studies. The proposed methods are applicable to large and complex structures. They are applicable to a variety of engineering systems, including nonlinear systems.
editor by CX 2023-06-13