Product Description
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.
Class T coupling is using AISI 5140 to manufacture.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.
Technical Parameters
Full Size Coupling
Size(in) | Coupling O.D W(mm) (+0.13,-0.25) |
Length L(mm) (+1.57,-0.00) |
Thread D.(in) | Length of Wrench Square (mm) |
Hardness(HRA) |
5/8″ | 38.10 | 101.6 | 15/16″ | 31.8 | 56-62 |
3/4″ | 41.28 | 1-1/16″ | |||
7/8″ | 46.00 | 1-3/16″ | |||
1″ | 55.60 | 1-3/8″ | 38.1 | ||
1-1/8″ | 60.33 | 114.3 | 1-9/16″ |
Slim Hole Coupling
Size(in) | Coupling O.D W(mm) (+0.13,-0.25) |
Length L(mm) (+1.57,-0.00) |
Thread D.(in) | Length of Wrench Square (mm) |
Hardness(HRA) |
5/8″ | 31.75 | 101.6 | 15/16″ | 31.8 | 56-62 |
3/4″ | 38.10 | 1-1/16″ | |||
7/8″ | 41.30 | 1-3/16″ | |||
1″ | 50.80 | 1-3/8″ | 38.1 |
Full Size Sub-coupling
Size(in) | Coupling O.D W(mm) (+0.13,-0.25) |
Length L(mm) (+1.57,-0.00) |
Small End Thread D. | Big End Thread D. | Hardness(HRA) |
5/8″-3/4″ | 41.28 | 101.6 | 15/16″ | 1-1/16″ | 56-62 |
3/4″-7/8″ | 46.00 | 1-1/16″ | 1-3/16″ | ||
7/8″-1″ | 55.60 | 114.3 | 1-3/16″ | 1-3/8″ | |
1″-1-1/8″ | 60.33 | 127.0 | 1-3/8″ | 1-9/16″ |
Slim Hole Sub-coupling
Size(in) | Coupling O.D W(mm) (+0.13,-0.25) |
Length L(mm) (+1.57,-0.00) |
Small End Thread D. | Big End Thread D. | Hardness(HRA) |
5/8″-3/4″ | 38.10 | 101.6 | 15/16″ | 1-1/16″ | 56-62 |
3/4″-7/8″ | 41.30 | 1-1/16″ | 1-3/16″ | ||
7/8″-1″ | 50.80 | 114.3 | 1-3/16″ | 1-3/8″ |
Full Size Polished Connection
Size(in) | Coupling O.D W(mm) (+0.13,-0.25) |
Length L(mm) (+1.57,-0.00) |
Thread D.(in) | Vanish Cone | Hardness(HRA) |
5/8″ | 38.10 | 101.6 | 15/16″ | 9O | 56-62 |
3/4″ | 41.28 | 1-1/16″ | |||
7/8″ | 46.00 | 1-3/16″ | |||
1″ | 55.60 | 1-3/8″ | |||
1-1/8″ | 60.33 | 114.3 | 1-9/16″ |
Slim Hole Polished Connection
Size(in) | Coupling O.D W(mm) (+0.13,-0.25) |
Length L(mm) (+1.57,-0.00) |
Thread D.(in) | Vanish Cone | Hardness(HRA) |
5/8″ | 31.75 | 101.6 | 15/16″ | 9O | 56-62 |
3/4″ | 38.10 | 1-1/16″ | |||
7/8″ | 41.30 | 1-3/16″ | |||
1″ | 50.80 | 1-3/8″ |
Coupling Mechanical Properties
Tensile Strength Rm(Mpa) | Yield Strength Rel(Mpa) | Elongation Percentage A(%) | Reduction Percentage of Area Z(%) |
≥655 | ≥405 | ≥16 | ≥48 |
Packing details: plywood case or according to customer demand
delivery time: 7 -30 days after payment
Company information
The predecessor of ZheJiang HangZhou CZPT Group Co.,Ltd. was the 5th Machine Repairing Factory of HangZhou Xihu (West Lake) Dis. Oil field, Sinopec Corp. In 1997, after being restructured according to the modern corporate system, the factory was named HangZhou CZPT Group Co.,Ltd.
With registered capital of 60,840,000 yuan, HangZhou CZPT Group is composed of 9 subsidiaries, including 8 manufacturers and 1 trade company. CZPT Group covers an area of 200,000 sq.m, including workshop area of 50,000 sq.m. Various kinds of production equipment values 38,600,000 yuan. It has a strong mechanical processing capability.
Our leading products are pumping unit , wellhead (X-mas tree), tubing pump & sucker rod pump, cementing accessories, down-hole tools,casing centralizer, drilling CZPT control series,float collar, pressure vessel ,camping house, air cannon, belt feeder ,float shoe and so on. They are mainly supplied to Central Asia, Southeast Asia, Africa and Middle East and many other countries.
Zhongshi Group has been the Tier One internet service provider of Sinopec. We passed ISO9001 quality management system certification and got approved to use API monograms on its oil machineries. So far, we have attained API 5CT, API 10D, API 11AX, API 11E and more are applying for.
With strong technical backup, reliable product quality, advanced marketing regime and good service system, this company wins popularity and recognition of vast consumers home and abroad.
Connection: | Connection |
---|---|
Structure: | Gear |
Flexible or Rigid: | Rigid |
Material: | Stainless Steel |
Standard: | Standard |
Product Name: | Sucker Rod Coupling |
Samples: |
US$ 2/Piece
1 Piece(Min.Order) | |
---|
Customization: |
Available
| Customized Request |
---|
Types of Couplings
A coupling is a device that connects two shafts and transmits power from one to the other. Its main purpose is to join two pieces of rotating equipment. It also allows for some degree of misalignment or end movement. Here are a few examples of coupling types: Beam coupling, Flexible coupling, Magnetic coupling, and Shaft coupling.
Beam coupling
Beam couplings are used to couple motors and other devices. They are available in several types, including flexible, slit, and rigid beam couplings. Each has unique properties and characteristics. These couplings are best for applications requiring a high level of precision and long life. They are also a practical solution for the connection of stepping and servo motors with screw rods.
Beam couplings are usually made of stainless steel or aluminum alloy, and feature spiral and parallel cut designs. Multiple cuts allow the coupling to accommodate multiple beams and improve angular and parallel misalignment tolerances. Additionally, beam couplings are comparatively cheaper than other types of rotary joints, and they require minimal maintenance.
The materials of a beam coupling should be considered early in the specification process. They are typically made of aluminum or stainless steel, but they can also be manufactured from Delrin, titanium, and other engineering grade materials. Beam couplings are often available in multiple sizes to fit specific shaft diameters.
Beam couplings are a key component of motion control systems. They provide excellent characteristics when used properly, and they are a popular choice for many applications. A thorough understanding of each type of coupling will help to prevent coupling failure and enhance system performance. Therefore, it is important to choose the right coupling for your application.
Various types of beam couplings have unique advantages and disadvantages. The FCR/FSR design has two sets of three beams. It is available in both metric and inch shaft sizes. The FCR/FSR couplings are ideal for light-duty power transmission applications. A metric shaft is more suitable for these applications, while an inch shaft is preferred for heavier duty applications.
Two types of beam couplings are available from Ruland. The Ruland Flexible beam coupling has a multi-helical cut design that offers a greater flexibility than commodity beam couplings. This design allows for higher torque capabilities while minimizing wind-up. In addition, it is also more durable than its commodity counterparts.
Flexible coupling
A flexible coupling is a versatile mechanical connection that allows for the easy coupling of two moving parts. The design of these couplings allows for a variety of stiffness levels and can address a variety of problems, such as torsional vibrations or critical speed. However, there are a number of tradeoffs associated with flexible couplings.
One of the biggest issues is the installation of the coupling, which requires stretching. This problem can be exacerbated by cold temperatures. In such a case, it is vital to install the coupling properly. Using a gear clamp is one of the most important steps in a successful installation. A gear clamp will keep the coupling in place and prevent it from leaking.
Another common type of flexible coupling is the gear coupling. These couplings are composed of two hubs with crowned external gear teeth that mesh with two internally splined flanged sleeves. The massive size of the teeth makes them resemble gears. Gear couplings offer good torque characteristics but require periodic lubrication. These couplings can also be expensive and have a limited number of applications.
Another type of flexible coupling is the SDP/SI helical coupling. These couplings can accommodate axial motion, angular misalignment, and parallel offset. This design incorporates a spiral pattern that makes them flexible. These couplings are available in stainless steel and aluminum.
A flexible coupling has a wide range of applications. Generally, it is used to connect two rotating pieces of equipment. Depending on its design, it can be used to join two pieces of machinery that move in different directions. This type of coupling is a type of elastomeric coupling, which has elastic properties.
There are many types of flexible couplings available for different types of applications. The purpose of a flexible coupling is to transmit rotational power from one shaft to another. It is also useful for transmitting torque. However, it is important to note that not all flexible couplings are created equally. Make sure to use a reputable brand for your coupling needs. It will ensure a reliable connection.
The simplest and most commonly used type of flexible coupling is the grid coupling. This type of coupling uses two hubs with slotted surfaces. The steel grid is allowed to slide along these slots, which gives it the ability to flex. The only limitation of this type of coupling is that it can only tolerate a 1/3 degree misalignment. It can transmit torques up to 3,656 Nm.
Magnetic coupling
Magnetic coupling is a technique used to transfer torque from one shaft to another using a magnetic field. It is the most common type of coupling used in machinery. It is highly effective when transferring torque from a rotating motor to a rotating shaft. Magnetic couplings can handle high torques and high speeds.
Magnetic coupling is described by the energy difference between a high-spin state and a broken symmetry state, with the former being the energy of a true singlet state. In single-determinant theories, this energy difference is called the Kij. Usually, the broken-symmetry state is a state with two interacting local high-spin centers.
The magnetic coupling device is regarded as a qualitative leap in the reaction still industry. It has solved a number of problems that had plagued the industry, including flammability, explosiveness, and leakage. Magnetic couplings are a great solution for many applications. The chemical and pharmaceutical industries use them for various processes, including reaction stills.
Magnetic couplings are a good choice for harsh environments and for tight spaces. Their enclosed design keeps them fluid and dust-proof. They are also corrosion-resistant. In addition, magnetic couplings are more affordable than mechanical couplings, especially in areas where access is restricted. They are also popular for testing and temporary installations.
Another use for magnetic coupling is in touch screens. While touch screens use capacitive and resistive elements, magnetic coupling has found a cool new application in wireless charging. While the finger tracking on touch screens may seem like a boley job, the process is very sensitive. The devices that use wireless charging need to have very large coils that are locked into resonant magnetic coupling.
Magnetic couplings also help reduce hydraulic horsepower. They cushion starts and reduce alignment problems. They can also improve flow in oversized pumps. A magnetic coupling with an 8 percent air gap can reduce hydraulic HP by approximately 27 percent. In addition, they can be used in aggressive environments. They also help reduce repair costs.
Magnetic couplings are a great choice for pumps and propeller systems because they have the added advantage of being watertight and preventing shaft failure. These systems also have the benefit of not requiring rotating seals.
Shaft coupling
A shaft coupling joins two shafts and transmits rotational motion. Generally, shaft couplings allow for some degree of misalignment, but there are also torque limiters. Selecting the right coupling can save you time and money and prevent equipment downtime. Here are the main features to consider when purchasing a coupling for your application.
Shaft couplings should be easy to install and disassemble, transmit full power to the mated shaft, and reduce shock loads. A shaft coupling that does not have projecting parts should be used for machines that move or rotate at high speeds. Some types of shaft couplings are flexible while others are rigid.
Shaft couplings can be used in a variety of applications, including piping systems. They can be used to connect shafts that are misaligned and help maintain alignment. They can also be used for vibration dampening. Shaft couplings also allow shafts to be disconnected when necessary.
Shaft couplings can accommodate a certain amount of backlash, but this backlash must be well within the tolerance set by the system. Extremely high backlash can break the coupling and cause excessive wear and stress. In addition, excessive backlash can lead to erratic alignment readings. To avoid these issues, operators must reduce backlash to less than 2deg.
Shaft couplings are often referred to by different names. Some are referred to as “sliced” couplings while others are known as “slit” couplings. Both types offer high torque and torsional stiffness. These couplings are typically made from metals with various alloys, such as acetal, stainless steel, or titanium.
CZPT Pulley produces shaft couplings for a variety of applications. These products are used in high-power transmission systems. They have several advantages over friction couplings. In addition to minimizing wear, they don’t require lubrication. They are also capable of transmitting high torque and high speeds.
Another type of shaft coupling is the universal coupling. It is used to transmit power to multiple machines with different spindles. Its keyed receiving side and flanges allow it to transmit power from one machine to another.
editor by CX 2023-04-21