86-757-88320620 / 86-18927227389       hzcdsales1@lihui88.com
What are the functions of shaft couplings?
Home » News » Product News » What are the functions of shaft couplings?

What are the functions of shaft couplings?

Views:0     Author:Site Editor     Publish Time: 2021-02-28      Origin:Site

The shaft coupling is a mechanical component that connects two rotating shafts such as the driving shaft and driven shaft for purpose of transmitting power, which is used in motors, pumps, generators, and compressors. As per the different types of shaft couplings, what are the functions of shaft couplings and where the shaft couplings can be used?


  • How does shaft coupling work?

  • What are the functions of shaft couplings?

  • What are the applications of shaft couplings?


How does shaft coupling work?

  • You can connect two shafts together by shaft coupling. No problem is shaft diameter are different.

  • The motor is the driving side and propeller is driven side.

  • The shaft coupling does not transfer the heat etc. of the motor to the driven side.

  • Shaft coupling absorbers the shock and vibration from transferring, this will help to protect surrounding components from damage.


What are the functions of shaft couplings?

  • Shaft couplings have the ability of buffering, dampening, and improving the dynamic performance of the shaft system. Shaft coupling refers to a device that connects two shafts or shafts and rotating parts, and rotates together in the process of transmitting movement and power, and does not disengage under normal conditions. Sometimes shaft coupling is also used as a safety device to prevent the connected parts from being subjected to excessive loads and play a role in overload protection.

  • Shaft coupling is often composed of two halves, which are connected by a key or tight fit respectively, and fastened to the ends of the two shafts, and then the two halves are connected in some way. The shaft coupling can also compensate the deviation between the two shafts due to inaccurate manufacturing and installation and deformation or thermal expansion during work.

  • Shaft coupling can compensate the axial displacement, radial displacement and angular displacement of the two connected shafts caused by manufacturing and installation errors to avoid excessive additional load on the shaft end.

l  Shaft coupling can alleviate the torsional impact on the shaft during deceleration.

  • Shaft coupling can change the resonance speed of the shaft system. For example, when the impact absorption power is the same, the larger the torsion angle based on the torque, the smaller the impact torque and the lower the resonance speed.

  • The torsional vibration of the shaft can be reduced by shaft coupling only when a structure with a large external damping or a material with a large internal damping is used as the intermediate force transmission part of the shaft coupling.

  • When the machine is accidentally overloaded, it will often cause damage to the transmission or other parts. If a safety shaft coupling is used in the transmission shaft system, the breaking, separation or slippage of the coupling elements in the shaft coupling can interrupt the power flow of the transmission or limit the transmission of the power flow, which can play a role of safety protection.


What are the applications of shaft couplings?

When choosing a shaft coupling, you should select the most suitable type of shaft coupling from the existing standard shaft couplings according to the actual situation and requirements. In general, the existing standard shaft coupling can basically meet the needs of different working conditions.

Unlike other shaft couplings, the slider coupling does not have an elastic element that can work like a spring, so the bearing load will not increase due to the increase in the relative displacement between the shafts. In any case, this series of shaft couplings is more worthwhile, and the ability to choose sliders of different materials is the biggest advantage of this shaft coupling. Generally speaking, one type materials are suitable for zero clearance, high torque rigidity and large torque, and the other type materials are suitable for low-precision positioning, without zero clearance, but have the functions of absorbing vibration and reducing noise. The non-metallic slider also has excellent electrical insulation and can be used as a mechanical fuse. When the engineering plastic slider is damaged, the transmission effect will be completely terminated, so as to protect the valuable mechanical parts. This design is suitable for large parallel relative displacements. The separate three-part design of the slider coupling limits its ability to compensate for axial deviations, for example, it cannot be used in push-pull applications. At the same time, because the center slider is floating, the two-axis movement must ensure that the slider does not fall off.

The elastic element of the bellows coupling is a precision metal bellows, which can be divided into two types: flexible series and rigid series. The flexible bellows couplings have greater flexibility and are often used in miniature applications such as encoders and sensors, which the rigid bellows couplings are mainly used in applications such as electrical machinery and CNC machine tools.


Learn more something about shaft couplings can know the functions of  shaft couplings and the applications of shaft couplings. If you want to buy good shaft couplings with reasonable price, FOSHAN HOUZHE TRANSMISSION EQUIPMENT CO., LTD. is your best choice. Whether from quality or price, or delivery time, we can help customers to open up a further and larger market. We have all types of different shaft couplings and if you have any questions, you can contact us or search us online.




No.29 south area of LiangBei Industrial Zone, Dali Town, Nanhai District, Foshan City, Guangdong Province, China.
 86-757-88320620

Copyrights   2020 Foshan Houzhe Transmission Equipment Co.,Ltd.     Sitemap / Supported by:Leadong