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 Do Pin Couplings Compare to Other Types of Couplings in Terms of Performance?
Pin couplings offer certain advantages and disadvantages compared to other types of couplings, and their performance characteristics can vary depending on the specific application requirements. Below is a comparison of pin couplings with some commonly used couplings:
1. Gear Couplings:
- Flexibility: Gear couplings are more rigid than pin couplings and may not offer the same level of misalignment capacity.
- Torsional Stiffness: Gear couplings provide higher torsional stiffness, making them suitable for applications requiring precise torque transmission.
- Shock Absorption: Gear couplings can handle higher shock loads due to their robust design and greater stiffness.
- Maintenance: Gear couplings may require periodic lubrication and maintenance compared to maintenance-free pin couplings.
- Applications: Gear couplings are commonly used in heavy-duty and high-torque applications where precise torque transmission is essential.
2. Flexible (Elastomeric) Couplings:
- Flexibility: Elastomeric couplings offer higher misalignment capacity than pin couplings and can handle angular, parallel, and axial misalignment.
- Shock Absorption: Elastomeric couplings provide excellent shock absorption, damping vibrations, and protecting connected equipment.
- Torsional Stiffness: Elastomeric couplings have lower torsional stiffness compared to pin couplings, making them more forgiving in high shock load applications.
- Installation: Elastomeric couplings are easy to install and require no lubrication, making them maintenance-free.
- Applications: Elastomeric couplings are commonly used in pumps, compressors, and other machinery where vibration isolation is crucial.
3. Rigid Couplings:
- Torsional Stiffness: Rigid couplings provide high torsional stiffness, ensuring accurate torque transmission.
- Misalignment Capacity: Rigid couplings have little to no misalignment capacity and require precise shaft alignment.
- Applications: Rigid couplings are used in applications where precise alignment is essential, such as shaft-to-shaft connections in high-precision systems.
Conclusion:
Pin couplings strike a balance between flexibility and torsional stiffness, making them suitable for applications with moderate misalignment and shock loads. They are often used in general industrial applications, conveyors, and light to medium-duty machinery.
When selecting a coupling for a specific application, it is crucial to consider factors such as misalignment requirements, shock and vibration loads, torsional stiffness, maintenance needs, and the level of precision required. Each coupling type has its strengths and weaknesses, and the appropriate choice will depend on the specific demands of the application.
Can Pin Couplings Be Used for Both Motor-to-Shaft and Shaft-to-Shaft Connections?
Yes, pin couplings can be used for both motor-to-shaft and shaft-to-shaft connections in various mechanical systems. The versatile design of pin couplings allows them to connect two shafts with aligned or misaligned centers, making them suitable for a wide range of applications.
Motor-to-Shaft Connections: In motor-driven systems, pin couplings are commonly used to connect the motor shaft to the driven shaft of the equipment. The motor can be an electric motor, combustion engine, or any other type of power source. The pin coupling efficiently transfers torque from the motor shaft to the equipment’s driven shaft, enabling power transmission and mechanical motion.
Shaft-to-Shaft Connections: Pin couplings are also well-suited for shaft-to-shaft connections, where two separate shafts need to be joined together. This could be the case when extending the length of a shaft or connecting two separate pieces of rotating equipment. The pin coupling provides a secure and flexible connection between the two shafts, allowing torque to be transmitted between them while accommodating misalignment.
It is essential to consider the specific requirements of the application when selecting a pin coupling. Factors such as the amount of misalignment, torque capacity, operating conditions, and space constraints should be taken into account to ensure the coupling can effectively and reliably connect the motor and shafts.
Overall, the versatility and performance of pin couplings make them a popular choice for both motor-to-shaft and shaft-to-shaft connections in various industrial and mechanical systems.
Types of Pin Coupling Designs
Pin couplings, also known as shear pin couplings, come in various designs to suit different application requirements. The main types of pin coupling designs are as follows:
- 1. Single Pin Coupling: In this design, a single shear pin is used to connect the two shafts. The pin is placed in a hole that runs through both coupling halves. Under excessive torque or shock loads, the pin shears off, disconnecting the shafts and protecting the equipment from damage. Single pin couplings are commonly used in light to moderate-duty applications.
- 2. Double Pin Coupling: Double pin couplings use two shear pins that are positioned 180 degrees apart. This design provides increased torque capacity and improved balance compared to the single pin design. Double pin couplings are suitable for applications with higher torque requirements.
- 3. Triangular Pin Coupling: Triangular pin couplings use three pins arranged in a triangular pattern around the circumference of the coupling. This design offers even higher torque capacity and improved torsional stiffness. Triangular pin couplings are ideal for heavy-duty applications where higher torque and misalignment tolerance are essential.
- 4. Splined Pin Coupling: Splined pin couplings use splines instead of solid pins to transmit torque between the shafts. The splines provide a more secure connection and better torque transmission compared to solid pins. Splined pin couplings are commonly used in precision motion control applications.
- 5. Taper Pin Coupling: Taper pin couplings use tapered pins that wedge tightly into matching tapered holes in the coupling halves. This design offers excellent torque transmission and alignment capabilities. Taper pin couplings are often used in heavy machinery and power transmission systems.
Each type of pin coupling design has its advantages and limitations, and the selection depends on factors such as the application’s torque requirements, misalignment tolerance, and environmental conditions. It is essential to choose the right type of pin coupling to ensure optimal performance, reliability, and safety in the mechanical system.
editor by CX 2024-04-13
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