China best 1″-6″ Aluminum Pin Lug Hose Shank Coupling

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)

|
Request Sample

Customization:
Available

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Customized Request

pin coupling

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.

pin coupling

Factors to Consider When Choosing a Pin Coupling for a Specific System

When selecting a pin coupling for a specific system, several critical factors need to be considered to ensure optimal performance, reliability, and longevity. Each application has unique requirements, and choosing the right pin coupling involves assessing the following factors:

1. Torque and Power Requirements: Determine the torque and power transmission requirements of the system. The pin coupling must be capable of handling the maximum torque and power generated by the connected equipment.

2. Operating Speed: Consider the rotational speed of the system’s driving and driven shafts. The pin coupling’s design should allow for smooth and efficient operation at the specified speed range.

3. Misalignment Tolerance: Assess the degree of misalignment between the shafts that the coupling needs to accommodate. Pin couplings are suitable for applications with moderate angular, parallel, and axial misalignment.

4. Operating Environment: Consider the environmental conditions the coupling will be exposed to, including temperature, humidity, dust, and presence of corrosive substances. Choose a pin coupling with materials and surface treatments suitable for the operating environment.

5. Size and Space Constraints: Ensure that the selected pin coupling fits within the available space and does not interfere with other components in the system.

6. Serviceability and Maintenance: Evaluate the ease of installation, maintenance, and replacement of the pin coupling. Easy-to-service couplings can help reduce downtime and maintenance costs.

7. Shock and Vibration: Consider the level of shock and vibration the system will experience. The pin coupling should be robust enough to handle these dynamic loads without failure.

8. Cost: Evaluate the overall cost of the pin coupling, including its initial purchase price, maintenance costs, and potential downtime expenses. Choose a coupling that offers the best balance of performance and cost-effectiveness.

9. Material Selection: Select the appropriate materials for the pin coupling based on the application requirements. Common materials include carbon steel, stainless steel, and alloy steel.

10. Compatibility: Ensure that the pin coupling is compatible with the specific shaft sizes and configurations of the system’s driving and driven components.

11. Compliance with Industry Standards: Check if the pin coupling meets relevant industry standards and safety requirements.

By carefully considering these factors, engineers and system designers can choose the most suitable pin coupling for their specific application. It’s essential to work closely with coupling manufacturers or suppliers to ensure that the selected coupling meets all the necessary specifications and requirements.

pin coupling

Understanding Pin Couplings and Their Functionality

A pin coupling, also known as a shear pin coupling, is a type of mechanical coupling used to connect two rotating shafts in a mechanical system. It is designed to transmit torque while allowing for a limited amount of angular misalignment between the shafts. The primary function of a pin coupling is to protect the connected equipment from torque overload and prevent damage to the shafts and other components in case of sudden shock or overload.

How a Pin Coupling Works:

A typical pin coupling consists of two hubs, one on each shaft to be connected, and a series of pins that pass through the hubs to join them together. The pins are usually made of a softer material than the hubs, such as brass or aluminum, to act as sacrificial elements. The number and size of the pins depend on the coupling’s torque rating and the required angular misalignment capacity.

When the shafts are misaligned, the pins experience shear stress as they bend under the applied load. In normal operating conditions, the pins remain intact and allow the torque to transfer from one shaft to another. However, in the event of an overload or excessive misalignment, the pins will shear off, preventing the transmission of excessive torque and protecting the connected equipment from damage.

After shearing, the damaged pins can be easily replaced, and the coupling can be put back into service without major repairs to the equipment. This feature makes pin couplings particularly suitable for applications with varying operating conditions and environments where shock loads or sudden overloads may occur.

Advantages of Pin Couplings:

Protection against Overload: The shear pins act as a safety feature, protecting the connected equipment from excessive torque and sudden shocks.

Misalignment Tolerance: Pin couplings can accommodate a limited amount of angular misalignment between the shafts.

Easy Replacement: After shearing, the damaged pins can be quickly replaced, reducing downtime and maintenance costs.

Versatility: Suitable for a wide range of applications, including pumps, compressors, and other industrial machinery.

Cost-Effective: The sacrificial pins are cost-effective components that can be easily replaced, avoiding costly repairs to the main equipment.

Limitations:

– Pin couplings have lower torque capacities compared to some other coupling types, such as gear couplings or rigid couplings.

– The need to replace the shear pins after each failure may lead to frequent maintenance requirements in applications with frequent overloads or misalignments.

In summary, pin couplings offer a reliable and cost-effective solution for torque transmission and protection against overloads in various mechanical systems. Their ability to accommodate misalignment and absorb shock loads makes them suitable for a wide range of industrial applications.


editor by CX 2024-04-12