China Custom CHINAMFG Lz Type Elastic Flexible Pin Bush Gear Couplings Nonmetallic Material Transmission Torque

Product Description

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

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.



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

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
Universal Coupling WS,WSD,WSP
Cardan Shaft SWC,SWP,SWZ
Tooth Coupling CL,CLZ,GCLD,GIICL,
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.

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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flexible gear coupling

Common Industries and Use Cases for Flexible Gear Couplings

Flexible gear couplings find widespread applications across various industries due to their ability to transmit torque efficiently while accommodating misalignments and reducing vibrations. Some of the common industries and specific use cases include:

1. Power Generation:

Flexible gear couplings are extensively used in power generation plants, including thermal power plants, hydroelectric power plants, and wind farms. They connect turbines, generators, and other rotating equipment, allowing for smooth power transmission and accommodating misalignments caused by thermal expansion or settling.

2. Steel and Metal Processing:

In steel and metal processing industries, flexible gear couplings are employed in rolling mills, continuous casting machines, and other heavy machinery. They handle the high torque and misalignments that occur during metal forming processes, providing reliable power transmission and reducing downtime.

3. Petrochemical and Oil & Gas:

These industries often deal with harsh environments, high temperatures, and corrosive substances. Flexible gear couplings with appropriate materials and coatings are used in pumps, compressors, and other critical equipment to ensure efficient power transmission and reliability.

4. Mining:

Mining operations involve large machines and heavy loads, requiring couplings that can handle substantial torque and misalignment. Flexible gear couplings are used in conveyor systems, crushers, and other mining equipment to maintain smooth and efficient operation.

5. Marine and Shipbuilding:

In marine applications, flexible gear couplings are used to connect marine diesel engines to propeller shafts. They absorb vibrations and misalignments caused by the motion of the ship, ensuring reliable power transmission and reduced wear on the propulsion system.

6. Pulp and Paper:

In the pulp and paper industry, flexible gear couplings are utilized in various stages of the papermaking process, including pulp refiners, digesters, and winding machines. They provide precision torque transmission and minimize vibrations, contributing to the efficiency of the paper production process.

These are just a few examples, and flexible gear couplings can be found in many other industries, such as cement, chemical, food and beverage, and more. Their versatility and ability to handle challenging conditions make them a preferred choice in various power transmission applications across industries.

flexible gear coupling

Enhanced Performance of Flexible Gear Couplings through Gear Teeth Flexibility

The flexibility of gear teeth in flexible gear couplings plays a crucial role in enhancing their overall performance. This flexibility allows the coupling to compensate for misalignments and absorb shocks and vibrations, providing several key benefits:

  • Misalignment Compensation: As the machinery operates, shafts may experience angular, parallel, or axial misalignments due to various factors like thermal expansion, foundation settlement, or manufacturing tolerances. The flexible gear teeth in the coupling can accommodate these misalignments by slight bending or elastic deformation, ensuring the smooth transmission of torque between the shafts despite their misaligned positions.
  • Vibration Damping: During operation, rotating equipment can generate vibrations caused by uneven loads, resonance, or other factors. The flexible gear teeth act as shock absorbers, dampening these vibrations and preventing them from propagating throughout the system. This helps reduce noise, wear, and stress on the machinery components, contributing to smoother and quieter operation.
  • Load Distribution: The flexibility of the gear teeth allows the coupling to distribute the transmitted load evenly across the entire tooth surface. This even load distribution reduces wear and fatigue on the gear teeth, increasing the coupling’s overall lifespan and reliability.
  • Overload Protection: In case of sudden shock loads or overloads, the flexible gear teeth can absorb part of the impact, protecting the connected equipment from damage. This feature is especially important in applications with variable loads or potential shock events.
  • Torsional Flexibility: The gear teeth’s flexibility enables the coupling to handle torsional movements, ensuring that torque is smoothly transferred between the shafts even if they are not perfectly aligned. This feature helps maintain constant velocity transmission, critical in precision systems.

Overall, the flexibility of gear teeth in flexible gear couplings allows these couplings to adapt to changing conditions, provide protection against unexpected forces, and improve the performance and reliability of mechanical power transmission systems.

flexible gear coupling

Handling High Torque Loads and Maintaining Constant Velocity Transmission in Flexible Gear Couplings

Flexible gear couplings are designed to handle high torque loads and maintain constant velocity transmission between the connected shafts. The unique construction of flexible gear couplings allows them to achieve these characteristics:

1. High Torque Capacity: The design of flexible gear couplings includes robust gear teeth that engage with each other. These gear teeth transmit torque from one shaft to the other efficiently. The use of high-quality materials and precise manufacturing ensures that the coupling can handle substantial torque loads without failure or deformation.

2. Constant Velocity Transmission: The meshing of the gear teeth in flexible gear couplings provides a positive drive, ensuring constant velocity transmission between the input and output shafts. This means that the rotational speed of the output shaft remains consistent with that of the input shaft, even under varying torque conditions.

These features make flexible gear couplings suitable for various industrial applications, including heavy machinery, high-power drives, and equipment requiring precise speed control.

China Custom CHINAMFG Lz Type Elastic Flexible Pin Bush Gear Couplings Nonmetallic Material Transmission Torque  China Custom CHINAMFG Lz Type Elastic Flexible Pin Bush Gear Couplings Nonmetallic Material Transmission Torque
editor by CX 2024-03-12