Product Description
Product Introduction
Pin lug couplings
Aluminum with brass nut and nbr washers
SIZE:, 2″, 2 1/2″, 3″, 4″,6″
Assembled with fire hose or PVC layflat hose
| PIN LUG COUPLING | |
| SIZE | Type |
| 2-1/2″ | Four ears |
| 3″ | |
| 4″ | |
| 6″ | |
| PIN LUG COUPLING | |
| SIZE | Type |
| 1″ | Two ears |
| 1-1/4″ | |
| 1-1/2″ | |
| 2″ | |
Company Profile
HangZhou CHINAMFG Co. LTD. is a leading manufacturer and exporter of fire hose, coupling and other fire-fighting equipments in China.
Our main products: rubber CHINAMFG fire hose, CHINAMFG CHINAMFG fire hose, PVC CHINAMFG fire hose, PU CHINAMFG fire hose. colorful fire hose, PVC/Nitrile fire hose, single jacket fire hose, double jacket fire hose and PU layflat hose. Our hose is for marine, mill, forest, fire-fighting, mine and construction.
Meanwhile, we have good cooperation with other famous international company in fire-fighting field. In 1999, we have approved ISO9000 certificate. We are also a member of FPA, CFPA.
You may be assured that we will apply you high quality and low cost products. In case you need more information on corporation and our products, please do not hesitate to contact us and we shall be very pleased to reply any of your inquiries at any time.
Workshop
Package And Shipping
Products wil be perfected protected by opp bag/Reinforced carton/stretch film/pallets. Any customized package will be acceptable. We accept ship by express including DHL/FEDEX/TNT, or ship by sea and air. Mostly we ship by sea. shipping time is within 25days by sea. Will advise exact delivery when you purchase.
Certification
Our service
Step 1:
When you are looking for something, pls send your inquiry with details and pics to me at Made in China. I will reply at the first time(faster than other suppliers) and provide good price(at least 10% lower than others). If you are interested in our products online, contact me directly with link attached.
Step 2:
Before purchase bulk order, sample can be available and free. I will advise everything you want to know about the PO, delivery, price, shipping method, package, payment…Production will be going when everything is confirmed by you.
Step 3:
After PO received, we will send you PI and you need to pay it firstly, then we will arrange bulk production, during the period, we will send you some pics when pre-product sample is finished.
Step 4:
Will inform you when shipping and send you pics when all goods are ready. As a professional supplier, will follow all the way until you receive the goods. Of course, inspection report will be provided. If needed, we can send products to SGS for testing.
FAQ
1. Where is your company and how many people there? How about your company?
We are based in HangZhou, China, start from 1998, sell to more than 20countries. There are totally 200-300 people in our office and factory.
2. How can you guarantee quality?
We will confirm everything before production, before shipping, inspection reported will be provided.
3. What do you provide?
We provide fire hose, coupling and fire equipments. irrigation fittings.
4. Why should we choose you?
We are the top fire hose manufacturers in Asia, we have more than 20 years experience of this industry. You will always get my quick response and good price. You will save money at the most degree from me.
What’s more, quick delivery, some free sample will be acceptable.
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| After-sales Service: | Excellent |
|---|---|
| Warranty: | All Life |
| Connection: | Connection |
| Structure: | Different |
| Flexible or Rigid: | Flexible |
| Material: | Aluminum |
| Samples: |
US$ 2/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How Does a Pin Coupling Protect Connected Equipment from Shock Loads and Vibrations?
Pin couplings are designed to provide excellent protection to connected equipment from shock loads and vibrations, ensuring the smooth and reliable operation of the machinery. The unique features of pin couplings contribute to their ability to absorb and dampen shock loads and vibrations effectively:
- Flexibility: Pin couplings possess a certain degree of flexibility due to the presence of movable pins. When subjected to sudden shock loads or vibrations, the pins can flex and move slightly, absorbing the impact and preventing it from transmitting directly to the connected equipment. This flexibility helps in reducing stress and minimizing the risk of damage to the machinery.
- Torsional Compliance: The pin coupling’s design allows for a certain amount of torsional compliance. This means that when the connected shafts experience slight misalignments or angular displacements, the pin coupling can compensate for these variations without causing additional stress or vibration in the system. This feature ensures that the machinery remains in proper alignment even under dynamic conditions, reducing wear and tear.
- Damping Characteristics: The presence of movable pins introduces damping characteristics to the coupling. When vibrations occur in the system, the pins can dampen these oscillations, preventing resonance and the amplification of vibrations. This damping effect improves the overall stability and performance of the machinery.
- Strength and Resilience: High-quality pin couplings are constructed from durable materials with excellent fatigue resistance. This enables the coupling to withstand repeated shock loads and vibrations over an extended period without compromising its integrity. The strength and resilience of the pin coupling contribute to the protection of the connected equipment.
Overall, pin couplings are reliable and versatile components that can effectively protect connected equipment from shock loads and vibrations. Their flexibility, torsional compliance, damping characteristics, and robust construction make them suitable for various industrial applications where shock and vibration mitigation are essential for maintaining the health and longevity of machinery and equipment.
Usage of Pin Couplings in Applications with Varying Operating Temperatures
Pin couplings are versatile and can be used in a wide range of operating conditions, including applications with varying temperatures. The performance of pin couplings at different temperature levels depends on the materials used in their construction and the specific design features. Here’s how pin couplings handle varying operating temperatures:
1. Material Selection: Pin couplings can be manufactured using different materials, including steel, stainless steel, alloy steel, and various heat-treated materials. The choice of material depends on the application requirements and the temperature range the coupling will be subjected to. Some materials are suitable for high-temperature applications, while others are more suitable for low-temperature conditions.
2. Heat Dissipation: The simple and open design of pin couplings allows for efficient heat dissipation. As the coupling operates, any heat generated due to friction or other factors can easily dissipate into the surrounding environment. This helps in maintaining a stable operating temperature and prevents overheating of the coupling and connected equipment.
3. Lubrication: Proper lubrication is essential for the smooth operation of pin couplings, especially in applications with high temperatures. Lubricants help reduce friction and wear between the mating surfaces, ensuring that the coupling functions optimally even in elevated temperature conditions.
4. Thermal Expansion Considerations: Pin couplings must be designed with thermal expansion in mind. When the operating temperature increases, the materials may expand, and the coupling should have sufficient clearance or play to accommodate this expansion without causing binding or interference.
5. Temperature Limits: While pin couplings can handle a wide range of temperatures, there are limits to the extremes they can tolerate. Excessive heat can lead to degradation of the coupling material, premature wear, or reduced performance. It’s essential to choose a pin coupling that is rated for the specific temperature range of the application.
6. Insulation: In certain cases, pin couplings may need additional insulation to protect against extreme temperature variations or to prevent heat transfer to sensitive components nearby. Insulation can be achieved using materials with low thermal conductivity or by incorporating insulating coatings or barriers.
When selecting a pin coupling for an application with varying operating temperatures, it’s crucial to consider the specific temperature range, the type of materials used in the coupling’s construction, and any additional factors that may impact its performance. Following the manufacturer’s guidelines and ensuring proper maintenance will help ensure the pin coupling operates effectively and reliably across the expected temperature range.
Can Pin Couplings Handle Misalignment Between Shafts?
Yes, pin couplings are designed to accommodate a certain degree of misalignment between shafts in rotating machinery. They are considered flexible couplings, which means they can provide some degree of angular, parallel, and axial misalignment capability.
Pin couplings typically consist of two hubs, each connected to a shaft, and a central sleeve with pins that transmit torque between the hubs. The pins allow for a limited range of movement, which helps to compensate for slight misalignments between the shafts.
The angular misalignment capacity of a pin coupling is achieved through the bending of the pins. When the shafts are misaligned at an angle, the pins on one side of the coupling experience bending while those on the opposite side are in tension. The pins are designed to withstand these bending and tension forces within their elastic limits, ensuring proper functioning and longevity of the coupling.
Similarly, the pins can accommodate parallel misalignment by sliding within the pin holes of the coupling’s central sleeve. This sliding action allows the hubs to move slightly relative to each other, compensating for any offset between the shafts.
However, it is essential to note that pin couplings have limitations in terms of the amount of misalignment they can handle. Excessive misalignment beyond their specified limits can lead to increased wear on the pins and other coupling components, reducing the coupling’s effectiveness and potentially causing premature failure.
While pin couplings are suitable for applications with moderate misalignment requirements, they may not be the best choice for applications with significant misalignment or where precise alignment is critical. In such cases, more flexible couplings like gear or elastomeric couplings may be more appropriate.
Overall, when considering the use of pin couplings, it is essential to carefully evaluate the specific misalignment requirements of the application and select a coupling that can adequately accommodate those misalignments while ensuring reliable and efficient power transmission.
editor by CX 2024-03-26
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