Types of Rigid Couplings
Image source: https://www.huco.com
A rigid coupling is a type of shaft coupling used to connect two shafts at their ends to transmit power. In the case of these couplings, the shafts provide a fixed union where torsional flexibility is not required, shaft alignment is maintained, and proper bearing support is provided. To reduce shaft deflection shaft support bearing should be located as close to the coupling as possible. Large couplings and those running at high speed may require balancing to reduce vibration. However, they are simple enough to install.
We classify three categories of Rigid Couplings:
- Flange couplings
- Sleeve couplings
- Ribbed couplings
Flange couplings
Flange couplings are used to connect shafts of the same or different diameters. The device consists of 2 flanged hubs, bored and keyed to fit their respective shafts and joined by bolts. Some have removable bushings for easier replacement. The couplings usually are made of carbon steel and are available to be over 8” in diameter. The flange-style couplings are primarily designed for heavy-duty applications.
Rigid Flange Coupling by Ringfeder
Sleeve couplings
Sleeve couplings are made from one piece of material; factory bored to accommodate standard shafting. Keyways are broached, and set screws are installed. Shaft keys transmit torque from the shaft to the coupling hubs, and set screws keep the coupling from sliding along the shaft. Sleeve couplings are also made in clamping style. Clamping styles come in two ways: one-piece design and split, two-piece. Split, two-piece couplers can be installed and removed without machine disassembly.
One-piece Sleeve Coupling
Ribbed couplings
Ribbed couplings may be used for heavy-duty services, made of 2 pieces and used to connect shafts of the same diameter. The coupling is keyed to both shafts with bolts. Those permit quick and easy installation and removal.
Ribbed Coupling from TB Woods
Features of Rigid Couplings
In summary, the benefits of rigid couplings include their low price, high torque capacity, torsional stiffness, and zero backlashes.
In the end, we would like you to watch a short demo video below about flange couplings made by RINGFEDER.
Check our article Gear Couplings: Benefits and Applications.
Feel free to Contact Us if you have any questions, need more information or if you are interested in purchasing a coupling.
HVH Industrial Solutions is an authorized distributor of the following coupling manufacturers: Ringfeder, System Components, TB Wood’s, Ameridrives, Bibby Turboflex, and Guardian Couplings.
We work closely with the engineering teams of the above companies to provide superior customer service and engineering support.
Vladimir Harutyunyan
Vladimir Harutyunyan is the founder of HVH Industrial. He has masters degree in mechanical engineering and over 10 years of experience in mechanical power transmission field.
Feel free to connect with Vlad on Linkedin: https://www.linkedin.com/in/vladharut
Vladimir Harutyunyan
Vladimir Harutyunyan is the founder of HVH Industrial ...
Feel free to connect with Vlad on Linkedin: https://www.linkedin.com/in/vladharut
