Product Description

LZ Type Flexible Pin Bush Gear Couplings(GB/T 5015-2003)

♦Description
The LZ type flexible pin coupling is made of the outer edge of the 2 half couplings and the inner edge of the outer sleeve to make a semicircular groove with the same radius, and a pin is embedded in the middle pin hole.
When working, the half-coupling of the driving shaft drives the outer sleeve through the pin, and the outer sleeve drives the driven half-coupling to rotate through the pin to transmit torque.

 

Advantage:

1. Low life-cycle costs and long service life

2. Increase productivity

3. Professional and innovative solutions

4. Reduce carbon dioxide emissions

♦Detailed Pictures

♦Product Parameter

Note:
kN.m= Norminal Torque; rpm= Allowable speed of rotation; d1.d2= Diameter of shaft hole;
Y L= Length of shaft hole; kg.m²= Rotational inertia; kg= Mass

Allowable Compensation for Elastic Pin& Bush Gear Couplings

Note: △Y= Radial; △X= Axial; △α= Angular
1. The measuring part of radial compensation is half of the maximum outer circle width of the half coupling.
2. The compensation quantity listed in the table refers to the relative offset of 2 axes caused by installation error, shock, vibration, deformation, temperature change and other factors.
The installation error must be less than the value listed in the table.

♦Other Products List

Transmission Machinery  Parts Name	Model
Universal Coupling	WS,WSD,WSP
Cardan Shaft	SWC,SWP,SWZ
Tooth Coupling	CL,CLZ,GCLD,GIICL, GICL,NGCL,GGCL,GCLK
Disc Coupling	JMI,JMIJ,JMII,JMIIJ
High Flexible Coupling	LM
Chain Coupling	GL
Jaw Coupling	LT
Grid Coupling	JS

♦Our Company

HangZhou CHINAMFG Machinery Manufacturing Co., Ltd. is a high-tech enterprise specializing in the design and manufacture of various types of coupling. There are 86 employees in our company, including 2 senior engineers and no fewer than 20 mechanical design and manufacture, heat treatment, welding, and other professionals.
Advanced and reasonable process, complete detection means. Our company actively introduces foreign advanced technology and equipment, on the basis of the condition, we make full use of the advantage and do more research and innovation. Strict to high quality and operate strictly in accordance with the ISO9000 quality certification system standard mode.
Our company supplies different kinds of products. High quality and reasonable price. We stick to the principle of “quality first, service first, continuous improvement and innovation to meet the customers” for the management and “zero defect, zero complaints” as the quality objective. 

 

♦Our Services
1. Design Services
Our design team has experience in Cardan shafts relating to product design and development. If you have any needs for your new product or wish to make further improvements, we are here to offer our support.

2. Product Services
Raw materials → Cutting → Forging →Rough machining →Shot blasting →Heat treatment →Testing →Fashioning →Cleaning→ Assembly→ Packing→ Shipping

3. Samples Procedure
We could develop the sample according to your requirement and amend the sample constantly to meet your need.

4. Research & Development
We usually research the new needs of the market and develop the new model when there is new cars in the market.

5. Quality Control
Every step should be a special test by Professional Staff according to the standard of ISO9001 and TS16949.

♦FAQ
Q 1: Are you a trading company or a manufacturer?
A: We are a professional manufacturer specializing in manufacturing various series of couplings.

Q 2: Can you do OEM?
Yes, we can. We can do OEM & ODM for all the customers with customized artworks in PDF or AI format.

Q 3: How long is your delivery time?
Generally, it is 20-30 days if the goods are not in stock. It is according to quantity.

Q 4: Do you provide samples? Is it free or extra?
Yes, we could offer the sample but not for free. Actually, we have a very good price principle, when you make the bulk order the cost of the sample will be deducted.

Q 5: How long is your warranty?
A: Our Warranty is 12 months under normal circumstances.

Q 6: What is the MOQ?
A: Usually our MOQ is 1 pcs.

Q 7: Do you have inspection procedures for coupling?
A: 100% self-inspection before packing.

Q 8: Can I have a visit to your factory before the order?
A: Sure, welcome to visit our factory.

Q 9: What’s your payment?
A: T/T.  
 

♦Contact Us

Web: huadingcoupling
Add: No.11 HangZhou Road,Chengnan park,HangZhou City,ZheJiang Province,China

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Materials Used in Manufacturing Flexible Flange Couplings and Their Impact on Performance

Flexible flange couplings are commonly manufactured using various materials, each offering specific properties that can impact their performance in mechanical power transmission systems. The choice of material depends on factors such as application requirements, operating conditions, torque and speed demands, and environmental considerations. Some of the commonly used materials and their impact on performance are as follows:

1. Elastomeric Materials (Rubber, Polyurethane, etc.): Elastomeric materials like rubber and polyurethane are widely used in flexible flange couplings. These materials provide excellent flexibility, which allows them to handle misalignment and dampen vibrations effectively. They can also absorb shocks and reduce transmission of torsional vibrations between shafts, contributing to smoother operation and reduced wear on connected machinery. However, elastomeric couplings may have limitations in high-temperature or aggressive chemical environments.
2. Metal Alloys (Steel, Stainless Steel, etc.): Metal alloys, such as steel and stainless steel, are preferred when higher torque and load-carrying capacities are required. They offer superior strength and durability, making them suitable for heavy-duty applications. Stainless steel is particularly resistant to corrosion and is often used in harsh or corrosive environments. Metal couplings may not provide as much flexibility as elastomeric ones, but they compensate with higher torque transmission capabilities and increased reliability.
3. Composite Materials (Fiberglass, Carbon Fiber, etc.): Composite materials are gaining popularity in various industries due to their unique combination of properties. They can offer a balance of flexibility and strength, making them suitable for applications where both misalignment accommodation and high torque transmission are necessary. Composite couplings are often lightweight, which can be advantageous for reducing the overall weight of rotating systems.
4. Plastics (Nylon, Delrin, etc.): Plastics are sometimes used in less demanding applications where cost-effectiveness and low friction are essential. While they may not provide the same level of performance as elastomeric or metal couplings, they can still serve adequately in specific settings with lower torque and speed requirements.

The choice of material for flexible flange couplings must consider factors such as application-specific needs, environmental conditions, temperature range, chemical exposure, and maintenance requirements. It is essential to select a coupling material that matches the demands of the application to ensure optimal performance, longevity, and reliability.

Comparison of Flexible Flange Couplings with Other Coupling Types

Flexible flange couplings, elastomeric couplings, and beam couplings are all popular choices for transmitting torque and accommodating misalignment in mechanical systems. Each type has its unique features and advantages, making them suitable for various applications. Here’s a comparison of flexible flange couplings with elastomeric and beam couplings:

1. Flexible Flange Couplings:
   • Design: Flexible flange couplings consist of two flanges with flexible elements (often rubber or polyurethane) connecting them. The flexibility of the coupling allows it to accommodate angular, axial, and parallel misalignments.
   • Misalignment Compensation: Flexible flange couplings can handle moderate to high levels of misalignment, making them suitable for applications where misalignment is expected.
   • Torque Capacity: They generally have a high torque capacity, making them suitable for high-power applications.
   • Backlash: Flexible flange couplings can have minimal backlash, ensuring accurate and precise motion transfer.
   • Performance: They provide damping of vibrations, reducing resonance in the system and minimizing wear on connected components.
   • Installation: Flexible flange couplings are relatively easy to install and require minimal maintenance.
   • Applications: They are commonly used in industrial machinery, power transmission systems, and applications with moderate to high misalignment requirements.
2. Elastomeric Couplings:
   • Design: Elastomeric couplings use an elastomer (rubber) element to connect two hubs. The elastomer provides flexibility for misalignment compensation.
   • Misalignment Compensation: Elastomeric couplings can handle angular and parallel misalignments but have limited axial misalignment capabilities.
   • Torque Capacity: They have a moderate torque capacity and are suitable for applications with lower torque requirements.
   • Backlash: Elastomeric couplings can have some level of backlash, which may impact precision in certain applications.
   • Performance: They provide damping of vibrations and shock absorption, protecting connected components from damage.
   • Installation: Elastomeric couplings are easy to install and require minimal maintenance.
   • Applications: They are commonly used in pumps, compressors, and applications where dampening of vibrations is crucial.
3. Beam Couplings:
   • Design: Beam couplings consist of a single piece of material with spiral cuts that provide flexibility for misalignment compensation.
   • Misalignment Compensation: Beam couplings can handle angular misalignment but have limited capabilities for parallel misalignment.
   • Torque Capacity: They have a moderate torque capacity and are suitable for applications with moderate torque requirements.
   • Backlash: Beam couplings typically have low or zero backlash, making them ideal for applications requiring precise motion transfer.
   • Performance: They offer good torsional stiffness and high torsional strength.
   • Installation: Beam couplings are simple to install and require little maintenance.
   • Applications: They are commonly used in small motors, robotics, and applications with tight space constraints.

Ultimately, the choice between flexible flange couplings, elastomeric couplings, or beam couplings depends on the specific requirements of the application. Factors such as the amount of misalignment, torque capacity, backlash tolerance, and the level of vibration dampening needed will influence the selection process. It’s essential to carefully consider the operating conditions and performance characteristics to ensure the coupling chosen optimally meets the demands of the mechanical system.

Key Design Considerations for Flexible Flange Couplings in Power Transmission Systems

When using flexible flange couplings in power transmission systems, several critical design considerations should be taken into account to ensure optimal performance, reliability, and longevity of the coupling:

• Misalignment Tolerance: One of the primary advantages of flexible flange couplings is their ability to compensate for misalignment between shafts. It is essential to determine the expected magnitude and type of misalignment (angular, parallel, or axial) that the coupling will encounter and select a coupling with appropriate misalignment tolerance.
• Torsional Stiffness: While flexible flange couplings offer some level of compliance to dampen vibrations, excessive torsional flexibility can lead to decreased system stability. Choosing a coupling with the right balance of flexibility and stiffness is crucial for maintaining the desired torsional characteristics.
• Torque Rating: The coupling’s torque rating must match or exceed the maximum torque requirements of the application. It is essential to consider the starting torque, peak torque, and continuous torque to avoid overloading the coupling.
• Speed Rating: The coupling’s speed rating should be suitable for the operating speed of the system. High-speed applications may require couplings designed to withstand higher centrifugal forces.
• Service Environment: Consider the environmental conditions in which the coupling will operate. Factors such as temperature extremes, presence of moisture or chemicals, and exposure to corrosive agents can impact the choice of materials and coatings for the coupling.
• Space Constraints: The available space for the coupling installation may dictate the coupling’s dimensions and design. It is essential to select a compact coupling that fits within the allocated space while maintaining the required performance.
• Material Selection: The choice of material for the flexible element (elastomeric, metallic, or composite) and the flanges should be based on factors such as torque requirements, misalignment compensation, and environmental compatibility.
• Dynamic Balancing: In high-speed applications, dynamic balancing of the coupling can help minimize vibrations and improve the overall system’s reliability and service life.
• Alignment: Although flexible flange couplings can tolerate misalignment, proper initial shaft alignment is still essential to reduce wear and maximize coupling life.
• Load Distribution: Ensure that the coupling distributes the transmitted load evenly between the shafts to prevent localized stress concentration and premature failure.

Conclusion: Selecting the right flexible flange coupling for a power transmission system requires careful consideration of various design parameters. By understanding the application’s requirements and the coupling’s capabilities, engineers can ensure that the coupling will perform optimally and reliably, leading to efficient power transmission and reduced maintenance needs.

editor by CX 2024-04-09