China high quality Machinery Part Roller Chain Coupling Aluminum Case with Sprockets Shaft Flexible Coupling Kc 4012-10020

Product Description

Product Description

     The roller chain coupling is a flexible coupling of amazingly simple construction. It consists of a combination of 1 coupling chain and a pair of coupling sprockets. Flexible and strong, the  roller chain coupling is suitable for a wide range of coupling applications.
     Roller chain coupling can used for the environment which with high temperature, wet and dirty conditions. It is not suitable for the occasion which is in high speed and with strong impact load. Roller chain coupling should working with excellent lubrication and protection cover conditions. 
The common chain coupling includes double roller chain coupling, single row roller chain coupling, tooth shape chain coupling, nylon chain coupling. Its scale is compact and its weight is light. But roller chain coupling don’t have high requirement to installation precision. 
     Generally speaking, it is usually in long service life. Production line equipment for various kinds of frozen food and dehydrated vegetables should transport by stainless steel chain. Roller chains are widely applied to household, industrial and agricultural machinery, includes conveyor, drawing machine, printing machine, automobile, motorcycle and bicycle.

Main Features
1.Simple structure,easy assembly and disassembly.
2.Light weight,and long service life.
3.Have a certain ability to compensate for installation less precision.
4.Suitable for high temperature,wet and dusty industrial environment.
5.Can not for high speed,violent vibration.

Techncial Date

KASIN No. Chain Type d L G S D H C Weight/Kg A B Casing Weight/Kg
3012 06B-2 × 12 12~16 64.8 29.8 5.2 35 45 10.2 0.31 69 63 0.22
4012 40-2 × 12 12~22 79.4 36 7.4 35 62 14.4 0.73 77 72 0.3
4014 40-2 × 14 12~28 79.4 36 7.4 43 69 14.4 1.12 84 75 0.31
4016 40-2 × 16 14~32 87.4 40 7.4 50 77 14.4 1.5 92 72 0.35
5014 50-2 × 14 15~35 99.7 45 9.7 55 86 18.1 2.15 101 85 0.47
5016 50-2 × 16 16~40 99.7 45 9.7 62 93 18.1 2.75 110 87 0.5
5018 50-2 × 18 16~45 99.7 45 9.7 70 106 18.1 3.6 122 85 0.6
6018 60-2 × 18 20~56 123.5 56 11.5 85 127 22.8 6.55 147 105 1.2
6571 60-2 × 20 20~60 123.5 56 11.5 1/8822 0571 -57152031              Fax: 86~/8822 0571 -57152030


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flexible coupling

How do flexible couplings handle shaft misalignment in rotating equipment?

Flexible couplings are designed to handle shaft misalignment in rotating equipment, providing several key features that allow them to accommodate misalignment effectively. Here’s how they work:

  • Angular Misalignment: Flexible couplings can handle angular misalignment, which occurs when the axes of the connected shafts are not perfectly aligned. The coupling’s flexible elements allow for slight angular deviation, ensuring that the torque can still be transmitted smoothly between the shafts.
  • Parallel Misalignment: Parallel misalignment occurs when the connected shafts are not perfectly in line but run parallel to each other. Flexible couplings can compensate for this misalignment by utilizing their ability to flex or slide, allowing the shafts to remain connected while maintaining rotational integrity.
  • Axial Misalignment: Axial misalignment refers to the situation where the connected shafts have a slight axial displacement. Some flexible couplings have specific designs to handle axial misalignment, allowing for limited movement along the axial direction without compromising the connection between the shafts.
  • Double Flexing: Certain types of flexible couplings, such as the double-flexing couplings, can accommodate both angular and parallel misalignments simultaneously. These couplings use two sets of flexible elements to achieve this capability, providing a higher degree of misalignment compensation.

Overall, the flexibility of the coupling’s material and design allows it to bend, flex, or slide in response to the misalignment, reducing the stress on the connected equipment and ensuring smooth power transmission. By accommodating misalignment, flexible couplings help prevent premature wear, reduce vibration, and extend the service life of the rotating equipment.

flexible coupling

What are the differences between flexible couplings and rigid couplings in terms of performance?

Flexible couplings and rigid couplings are two distinct types of couplings used in mechanical systems, and they differ significantly in terms of performance and applications.

  • Torsional Flexibility: The primary difference between flexible and rigid couplings lies in their ability to handle misalignments and torsional flexibility. Flexible couplings are designed with elements, such as elastomeric inserts or metal bellows, that can deform or twist to accommodate shaft misalignments, angular offsets, and axial movements. On the other hand, rigid couplings do not have any flexibility and maintain a fixed connection between the shafts, which means they cannot compensate for misalignment.
  • Misalignment Compensation: Flexible couplings can absorb and mitigate misalignment between shafts, reducing stress and wear on connected components. In contrast, rigid couplings require precise alignment during installation, and any misalignment can lead to increased loads on the shafts and bearings, potentially leading to premature failure.
  • Vibration Damping: Flexible couplings, especially those with elastomeric elements, offer damping properties that can absorb and dissipate vibrations. This damping capability reduces the transmission of vibrations and shocks through the drivetrain, improving the overall system performance and protecting connected equipment. Rigid couplings, being solid and without damping elements, do not provide this vibration damping effect.
  • Backlash: Flexible couplings can have some degree of backlash due to their flexibility, particularly in certain designs. Backlash is the play or free movement between connected shafts. In contrast, rigid couplings have minimal or no backlash, providing a more precise and immediate response to changes in rotational direction.
  • Torque Transmission: Rigid couplings are more efficient in transmitting torque since they do not have any flexible elements that can absorb some torque. Flexible couplings, while capable of transmitting substantial torque, may experience some power loss due to the deformation of their flexible components.
  • Applications: Flexible couplings are widely used in applications that require misalignment compensation, damping, and shock absorption, such as pumps, motors, and industrial machinery. On the other hand, rigid couplings are used in situations where precise alignment is critical, such as connecting shafts of well-aligned components or shafts that require synchronous operation, like in some encoder applications.

In summary, flexible couplings excel in applications where misalignment compensation, vibration damping, and shock absorption are required. They are more forgiving in terms of alignment errors and can accommodate dynamic loads. Rigid couplings, on the other hand, are used in situations where precise alignment and zero backlash are essential, ensuring direct and immediate power transmission between shafts.

flexible coupling

Can flexible couplings be used for both motor-to-shaft and shaft-to-shaft connections?

Yes, flexible couplings can be used for both motor-to-shaft and shaft-to-shaft connections in various applications. The versatility of flexible couplings allows them to adapt to different types of connections and meet the specific requirements of the system.

Motor-to-Shaft Connections:

When connecting a motor to a shaft, a flexible coupling serves as an intermediary component that joins the motor shaft and the driven shaft. Flexible couplings are commonly used in motor-driven systems to accommodate misalignment between the motor and the driven load. In motor applications, flexible couplings help reduce stress and wear on the motor bearings, thus extending the motor’s life and enhancing overall system reliability. They also act as vibration dampeners, minimizing vibrations transmitted from the motor to the driven shaft, and subsequently to connected equipment, ensuring smoother operation.

Shaft-to-Shaft Connections:

In many mechanical systems, such as those in the manufacturing, automation, and power transmission industries, shaft-to-shaft connections are required. A flexible coupling can bridge the gap between two shafts and transmit torque while accommodating misalignment. This type of coupling is commonly used to connect shafts that are not perfectly aligned due to factors like manufacturing tolerances, thermal expansion, or foundation settling. By allowing for misalignment, the flexible coupling protects the connected components from excessive stresses and ensures efficient power transmission.

Versatility and Advantages:

The ability of flexible couplings to handle both motor-to-shaft and shaft-to-shaft connections makes them versatile solutions for a wide range of industrial applications. Some of the advantages of using flexible couplings in these connections include:

  • Minimizing stress and wear on connected components, such as bearings and seals.
  • Compensating for misalignment, ensuring smooth power transmission.
  • Damping vibrations and shock loads, reducing the risk of mechanical failures.
  • Protecting equipment from excessive forces, enhancing system reliability.
  • Simplifying installation and alignment procedures, reducing downtime.
  • Improving overall system performance and operational efficiency.


Flexible couplings find applications in a wide range of industries, including manufacturing, material handling, automotive, aerospace, robotics, and more. Whether connecting a motor to a shaft or joining two shafts directly, flexible couplings play a crucial role in enhancing the reliability and efficiency of rotating machinery and mechanical systems.

In conclusion, flexible couplings can effectively serve as connectors for both motor-to-shaft and shaft-to-shaft connections, providing essential misalignment compensation and protection for connected equipment in various industrial applications.

China high quality Machinery Part Roller Chain Coupling Aluminum Case with Sprockets Shaft Flexible Coupling Kc 4012-10020  China high quality Machinery Part Roller Chain Coupling Aluminum Case with Sprockets Shaft Flexible Coupling Kc 4012-10020
editor by CX 2024-05-06


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