Product Description
FM/UL Approved Fire Fighting Parts Two Grooved End Coupling
Product Description
Feature: ductile iron grooved coupling
1) Material:ductile iron ASTM
2) Reducing installation costs
This kind of coupling is designed for the pipe bearing moderate pressure. It allows controlled angle, linear and rotational movement at each joint and provides the added advantages of expansion, contraction and deflection. This is usful to accommodate uneven laying surfaces, and movement from thermal changes, setting, seismic effect or other causes.
| Serial number | D | D1 | L | d | Space |
| 1 | φ275 | φ219 | 185 | φ203 | 8″ |
| 2 | φ315 | φ270 | 176 | φ253 | 10″ |
| 3 | φ380 | φ320 | 178 | φ304 | 12″ |
| 4 | φ501 | φ441 | 186 | φ407 | 14″ |
Q 1::What are the advantages of our factory?
A1::Our factory is specialized in manufacturing hose coupling for 30 years,and our promise is to provide our world-class quality, on-time delivery and excellent after-sales services
Q2::How about our products?
A2::Our products are famous for the good quality and good watering effect,and also you can get the free samples to do a test of the quality and watering effect.
Q3::How about hose specifications?
A3::We can produce lay flat hose according to your request on Inner Diameter, working pressure,color and length per roll.
Before send you right quotation, please kindly confirm with us.
Q4::How about get the samples?
A4::You can get the samples for freejust pay for the sample freight.We will set it by DHL,FEDEX,UPS,TNT,EMS.
Q5::What is the minimum order quantity?(MOQ)
A5::Usually our MOQ is 3000 pieces, but for first cooperation we also accept little order, so any order is welcomed.
Q6::How about delivery ?
A6::We can send to you by sea/air/express according to you, usually deliver within 7-10 working days after receive deposit.
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Can flexible couplings be used in applications with high shock and impact loads?
Yes, flexible couplings can be used in applications with high shock and impact loads. In fact, they are specifically designed to absorb and dampen shock loads, making them well-suited for such challenging environments. Here’s how flexible couplings handle high shock and impact loads:
- Material Flexibility: Flexible couplings are made from materials with high elasticity and flexibility, such as elastomers (rubber-like materials) or metal alloys. When a shock load is applied, these materials can deform temporarily, absorbing the impact energy and preventing it from transmitting to the connected equipment.
- Vibration Damping: Shock loads often generate vibrations that can be harmful to the equipment. Flexible couplings with vibration-damping properties can further mitigate the effects of shock loads by absorbing and dissipating the vibration energy, reducing the stress on the machinery.
- Design Features: Some flexible couplings are specifically engineered with features to handle high shock loads. These may include reinforced structures, enhanced damping characteristics, or additional support to withstand the sudden forces generated by impacts.
- Load Distribution: Flexible couplings help distribute the shock load more evenly across the flexible elements or components, preventing localized stress concentrations that could lead to component failure.
- Resilience: The flexibility and resilience of the coupling material allow it to return to its original shape after the shock load has dissipated. This ability to recover from deformation ensures that the coupling can continue to accommodate misalignment and transmit torque effectively.
- Protection of Connected Equipment: By absorbing shock loads, flexible couplings protect the connected equipment from sudden and severe impacts, reducing the risk of damage or premature failure of critical components.
Applications with high shock and impact loads can be found in various industries, including mining, construction, material handling, and heavy machinery. Flexible couplings provide an essential role in maintaining the reliability and longevity of the equipment in these demanding environments.
When selecting a flexible coupling for an application with high shock and impact loads, it is crucial to consider the specific requirements and operating conditions. Consulting with the coupling manufacturer or a qualified engineer can ensure the proper coupling is chosen to meet the unique challenges of the application.
How does a flexible coupling handle torsional vibrations in rotating machinery?
A flexible coupling is designed to handle torsional vibrations in rotating machinery by providing a degree of flexibility and damping. Torsional vibrations are oscillations that occur in the drivetrain due to torque variations, sudden load changes, or other transient events. These vibrations can lead to resonance, excessive stress, and premature failure of components.
Flexible couplings mitigate torsional vibrations through the following mechanisms:
- Torsional Compliance: Flexible couplings have an element, such as an elastomeric insert, that can deform or twist to absorb torsional shocks. When the drivetrain experiences torsional vibrations, the flexible element flexes, effectively isolating and dampening the vibrations before they propagate further.
- Damping: Many flexible couplings have inherent damping properties, especially those with elastomeric components. Damping dissipates the energy of the torsional vibrations, reducing their amplitude and preventing resonance from occurring.
- Tuned Design: Some flexible couplings are specifically designed with specific torsional characteristics to match the drivetrain’s requirements. By tuning the coupling’s stiffness and damping properties, engineers can ensure optimal torsional vibration control.
- Torsional Stiffness: While flexible couplings provide flexibility to absorb vibrations, they also offer a degree of torsional stiffness to maintain the torque transmission efficiency between the shafts.
It is important to select the appropriate flexible coupling based on the specific torsional characteristics and requirements of the rotating machinery. Different applications may demand different types of couplings with varying levels of flexibility and damping. High-performance flexible couplings can effectively minimize torsional vibrations, protecting the drivetrain and connected equipment from excessive stress and potential damage.
Additionally, proper alignment of the flexible coupling during installation is crucial to ensure its optimal performance in mitigating torsional vibrations. Misalignment can introduce additional stresses and exacerbate torsional issues in the system. Regular inspection and maintenance of the flexible coupling will help identify any signs of wear or damage that may affect its ability to handle torsional vibrations effectively.
What is a flexible coupling and how does it work?
A flexible coupling is a mechanical device used to connect two shafts while allowing for relative movement between them. It is designed to transmit torque from one shaft to another while compensating for misalignment, vibration, and shock. Flexible couplings are essential components in various rotating machinery and systems, as they help protect the connected equipment and enhance overall performance.
Types of Flexible Couplings:
There are several types of flexible couplings, each with its unique design and characteristics. Some common types include:
- Jaw Couplings: Jaw couplings feature elastomer spiders that fit between two hubs. They can accommodate angular and parallel misalignment while dampening vibrations.
- Disc Couplings: Disc couplings use thin metallic discs to connect the shafts. They are highly flexible and provide excellent misalignment compensation.
- Gear Couplings: Gear couplings use gear teeth to transmit torque. They offer high torque capacity and can handle moderate misalignment.
- Beam Couplings: Beam couplings use a single piece of flexible material, such as a metal beam, to transmit torque while compensating for misalignment.
- Bellows Couplings: Bellows couplings use a bellows-like structure to allow for axial, angular, and parallel misalignment compensation.
- Oldham Couplings: Oldham couplings use three discs, with the middle one having a perpendicular slot to allow for misalignment compensation.
How a Flexible Coupling Works:
The operation of a flexible coupling depends on its specific design, but the general principles are similar. Let’s take the example of a jaw coupling to explain how a flexible coupling works:
- Two shafts are connected to the coupling hubs on either side, with an elastomer spider placed between them.
- When torque is applied to one shaft, it causes the spider to compress and deform slightly, transmitting the torque to the other shaft.
- In case of misalignment between the shafts, the elastomer spider flexes and compensates for the misalignment, ensuring smooth torque transmission without imposing excessive loads on the shafts or connected equipment.
- The elastomer spider also acts as a damping element, absorbing vibrations and shocks during operation, which reduces wear on the equipment and enhances system stability.
Overall, the flexibility and ability to compensate for misalignment are the key features that allow a flexible coupling to function effectively. The choice of a specific flexible coupling type depends on the application’s requirements, such as torque capacity, misalignment compensation, and environmental conditions.
editor by CX 2024-02-24