Описание продукта
Описание продукта
Cast Iron Spider Rubber Flexible NM 128 water pump Shaft coupling
Cast iron NM flexible shaft coupling is a cylindrical pin made of some non-metallic materials, which is placed between the 2 sides of the coupling and the inner surface of the outer ring, and a device to transfer the torque through the column pin to realize the connection between 2 half couplings.
Cast iron NM flexible shaft coupling between the slider made of bakelite cloth or polyurethane, suitable for high speed, large torque, no sharp impact of the 2 connections. The standard code of the pump industry is Bl104. The maximum allowable torque is 850N m, and the maximum shaft diameter is 50mm.
The characteristics of the China Manufactory NM Spider Coupling:
1. It is small in size, light in quality, simple in structure, convenient in installation and low in price. It is often used in small power occasions.
2, the transmission torque is large, and in the same torque, most of the rotary diameter is smaller than the tooth coupling, and it can partly replace the tooth coupling.
3, the inertia force is small, it is suitable for 2 axis connection with little torque, high speed and no sharp impact. The transmission torque of nylon slider is small, but it is more suitable for high-speed operation without lubrication.
Параметры продукта
Packaging & Shipping
All the products can be packed in cartons,or,you can choose the pallet packing.
MADE IN CHINA can be pressed on wooden cases.Land,air,sea transportation are available.UPS,DHL,TNT,
FedEx and EMS are all supported.
Профиль компании
About Mighty Machinery
ZheJiang Mighty Machinery Co., Ltd., specializes in manufacturing Mechanical Power Transmission Products. After over 13 years hard work, MIGHTY have already get the certificate of ISO9001:2000 and become a holding company for 3 manufacturing factories.
MIGHTY advantage
1, Abundant experience in the mechanical processing industries.
2,Large quality of various material purchase and stock in warhouse which ensure the low cost for the material and production in time.
3,Now have 5 technical staff, we have strong capacity for design and process design, and more than 70 worker now work in our FTY and double shift eveyday.
4,Strick quality control are apply in the whole prodution. we have incoming inspection,process inspection and final production inspection which can ensure the perfect of the goods quality.
5,Long time cooperate with the Global Buyer, make us easy to understand the csutomer and handle the export.
Часто задаваемые вопросы
Q1: Are you trading company or manufacturer ?
A: We are factory.
Q2:Do you provide samples ? is it free or extra ?
A: : Yes, we could offer the sample but not for free.Actually we have a very good price principle, when you make the bulk order then cost of sample will be return to you.
Q3: How long is your delivery time?
A: Generally it is 10-15 days if the goods are in stock. Or it is 7-25 days if the goods are not in stock, it is according to quantity.
Q4:How long is your warranty?
A: Our Warranty is 12 month.
Q5 :Do you have inspection procedures for coupling ?
A:100% self-inspection before packing
Q6. What’s your payment?
A:1) 100% T/T. 2) 30% in advance, others before shipment. 3) L/C Q7:Can I have a visit to your factory before the order? A: Sure,welcome to visit our factory.
| Стандартный или нестандартный: | Стандарт |
|---|---|
| Крутящий момент: | 25-12500(N.M) |
| Скорость: | 1500-8500(R/M) |
| Структура: | Jaw / Spider |
| Материал: | Чугун |
| Тип: | Flexible Coupling |
| Образцы: |
US$ 15.9/Piece
1 штука (минимальный заказ) | |
|---|
| Настройка: |
Доступный
| Индивидуальный запрос |
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How do flexible couplings compare to other types of couplings in terms of performance?
Flexible couplings offer distinct advantages and disadvantages compared to other types of couplings, making them suitable for specific applications. Here is a comparison of flexible couplings with other commonly used coupling types in terms of performance:
- Rigid Couplings:
Rigid couplings are simple in design and provide a solid connection between two shafts, allowing for precise torque transmission. They do not offer any flexibility and are unable to compensate for misalignment. As a result, rigid couplings require accurate shaft alignment during installation, and any misalignment can lead to premature wear and increased stress on connected equipment. Rigid couplings are best suited for applications where shaft alignment is precise, and misalignment is minimal, such as in well-aligned systems with short shaft spans.
- Flexible Couplings:
Flexible couplings, as discussed previously, excel at compensating for misalignment between shafts. They offer angular, parallel, and axial misalignment compensation, reducing stress on connected components and ensuring smooth power transmission. Flexible couplings are versatile and can handle various applications, from light-duty to heavy-duty, where misalignment, vibration damping, or shock absorption is a concern. They provide a cost-effective solution for many industrial, automotive, and machinery applications.
- Олдхэмские пары:
Oldham couplings are effective at compensating for angular misalignment while maintaining constant velocity transmission. They offer low backlash and electrical isolation between shafts, making them suitable for precision motion control and applications where electrical interference must be minimized. However, Oldham couplings have limited capacity to handle parallel or axial misalignment, and they may not be suitable for applications with high torque requirements.
- Зубчатые муфты:
Gear couplings are robust and can handle high torque levels, making them suitable for heavy-duty applications such as mining and steel mills. They offer good misalignment compensation and have a compact design. However, gear couplings are relatively more expensive and complex than some other coupling types, and they may generate more noise during operation.
- Дисковые муфты:
Disc couplings provide excellent misalignment compensation, including angular, parallel, and axial misalignment. They have high torsional stiffness, making them ideal for applications where accurate torque transmission is critical. Disc couplings offer low inertia and are suitable for high-speed applications. However, they may be more sensitive to shaft misalignment during installation, requiring precise alignment for optimal performance.
- Conclusion:
The choice of coupling type depends on the specific requirements of the application. Flexible couplings excel in compensating for misalignment and vibration damping, making them versatile and cost-effective solutions for many applications. However, in situations where high torque, precision, or specific electrical isolation is necessary, other coupling types such as gear couplings, disc couplings, or Oldham couplings may be more suitable. Proper selection, installation, and maintenance of the coupling are essential to ensure optimal performance and reliability in any mechanical system.

Можно ли использовать гибкие муфты в условиях изменяющихся рабочих температур?
Да, гибкие муфты могут использоваться в системах с различными рабочими температурами. Пригодность гибкой муфты для конкретного температурного диапазона зависит от ее конструкции и используемых материалов. Существуют различные типы гибких муфт, рассчитанных на широкий диапазон температур, что делает их универсальными для использования в различных отраслях промышленности и условиях.
Применение в условиях высоких температур:
Для применений с высокими рабочими температурами, например, в некоторых промышленных процессах, выхлопных системах или высокотемпературном оборудовании, используются гибкие муфты, изготовленные из материалов с превосходной термостойкостью. К таким материалам могут относиться сплавы нержавеющей стали, термообработанные стали или специализированные высокотемпературные эластомеры. Высокотемпературные гибкие муфты разработаны таким образом, чтобы сохранять свои механические свойства, включая гибкость и способность передавать крутящий момент, даже при повышенных температурах.
Применение в условиях низких температур:
Напротив, для применения в условиях экстремально низких температур или криогенных процессах используются гибкие муфты, изготовленные из материалов с низкой термостойкостью. Эти муфты спроектированы таким образом, чтобы сохранять гибкость и функциональность при очень низких температурах, не становясь хрупкими и не теряя способности компенсировать несоосность. В некоторых низкотемпературных муфтах могут использоваться специальные полимеры или эластомеры с превосходными характеристиками при низких температурах.
Вопросы, касающиеся температурного диапазона:
При выборе гибкой муфты для применений с изменяющимися рабочими температурами крайне важно учитывать конкретный температурный диапазон, в котором будет работать муфта. Некоторые гибкие муфты имеют более широкий температурный диапазон, что позволяет им эффективно функционировать как в высокотемпературных, так и в низкотемпературных средах. Однако в экстремальных температурных условиях могут потребоваться специализированные муфты для обеспечения надежной работы и предотвращения преждевременного выхода из строя.
Рекомендации производителя:
Производители гибких муфт предоставляют рекомендации и технические характеристики, касающиеся температурного диапазона своей продукции. Крайне важно ознакомиться с документацией производителя, чтобы убедиться, что выбранная муфта подходит для предполагаемой рабочей температуры в конкретном применении. Использование муфты за пределами рекомендованного температурного диапазона может привести к проблемам с производительностью, снижению эффективности или даже к выходу из строя.
Приложения:
Гибкие муфты с изменяемой термостойкостью находят применение во многих отраслях промышленности, включая аэрокосмическую, автомобильную, обрабатывающую, энергетическую и другие. Будь то высокотемпературные выхлопные системы, низкотемпературные криогенные процессы или обычные промышленные приложения с колебаниями температуры, гибкие муфты играют жизненно важную роль в обеспечении надежной передачи мощности и компенсации несоосности.
Таким образом, гибкие муфты могут эффективно использоваться в приложениях с изменяющимися рабочими температурами при условии, что конструкция и свойства материала муфты соответствуют конкретным температурным требованиям приложения.

Are there any limitations or disadvantages of using flexible couplings?
While flexible couplings offer numerous advantages, they do come with some limitations and disadvantages that should be considered when selecting them for specific applications. Here are some of the common limitations and disadvantages of using flexible couplings:
- Жесткость на кручение: Flexible couplings provide some level of torsional flexibility, which is advantageous in many applications. However, in systems that require high precision and minimal angular deflection, the inherent flexibility of the coupling may not be suitable. In such cases, a rigid coupling may be more appropriate.
- Limitation in High-Torque Applications: While some flexible couplings can handle moderate to high torque levels, they may not be as well-suited for extremely high-torque applications. In such cases, specialized couplings, such as gear couplings, may be required to handle the high torque demands.
- Temperature Limitations: The performance of certain flexible coupling materials, especially elastomers and plastics, may be affected by extreme temperature conditions. High temperatures can lead to premature wear and reduced lifespan of the coupling, while low temperatures may result in reduced flexibility and potential brittleness.
- Chemical Compatibility: Certain flexible coupling materials may not be compatible with certain chemicals or substances present in the application’s environment. Exposure to chemicals can cause degradation or corrosion of the coupling material, affecting its performance and lifespan.
- Installation and Alignment: Flexible couplings require proper installation and alignment to function effectively. If not installed correctly, misalignment issues may persist, leading to premature wear and reduced performance. Aligning the shafts accurately can be time-consuming and may require specialized equipment and expertise.
- Cost: In some cases, flexible couplings may be more expensive than rigid couplings due to their more complex design and use of specialized materials. However, the cost difference is often justified by the benefits they offer in terms of misalignment compensation and vibration damping.
- Service Life: The service life of a flexible coupling can vary depending on the application’s conditions and the quality of the coupling. Regular maintenance and timely replacement of worn or damaged parts are essential to ensure the coupling’s longevity and prevent unexpected failures.
Despite these limitations, flexible couplings remain highly valuable components in a wide range of applications, providing efficient torque transmission and compensating for misalignment. Proper selection, installation, and maintenance can help mitigate many of the disadvantages associated with flexible couplings, ensuring their reliable and long-lasting performance in various mechanical systems.


editor by CX 2023-10-03