In mechanical engineering, couplings are essential components that connect two shafts to transmit power and accommodate misalignments. They are broadly categorized into Material Flexing Couplings and Mechanical Flexing Couplings, each serving specific applications based on their design and functionality.​
Rathi Couplings
Rathi Couplings
+1
Rathi Couplings
+1

Material Flexing Couplings
These couplings derive their flexibility from the deformation of a resilient material, such as rubber or thin metallic discs. They typically do not require lubrication, making them suitable for applications where maintenance is challenging.​
Rathi Couplings

Jaw Couplings: Utilize an elastomeric element between two intermeshing jaws to transmit torque. They accommodate misalignment and provide torsional damping, ideal for low-torque, general-purpose applications.​

Sleeve Couplings: Feature an elastomeric insert with male splines that mate with female hub splines, transmitting torque in shear. Suitable for low to medium torque applications with moderate misalignment.​
Rathi Couplings

Tyre Couplings: Consist of a rubber or polyurethane element connected to two hubs, transmitting torque in shear. They offer high misalignment capacity and reduce shock loads and vibrations.​

Disc Couplings: Transmit torque through flexing disc elements, accommodating angular, parallel, and axial misalignments. They are known for high-speed capability and zero backlash.​

Diaphragm Couplings: Use a series of diaphragms to transmit torque, allowing for high angular, parallel, and axial misalignments. They are suitable for high-torque, high-speed applications.​

Mechanical Flexing Couplings
These couplings accommodate misalignment through the relative movement of mechanical components, such as sliding or rolling of metal surfaces. They require regular lubrication to function effectively.​

Gear Couplings: Comprise two hubs with external gear teeth that mesh with internally splined flanged sleeves. They transmit high torque and accommodate angular and axial misalignments through the rocking and sliding of gear teeth.​
Rathi Couplings

Grid Couplings: Feature a flexible grid element that connects two hubs, absorbing shock loads and vibrations. They are used in applications requiring high torque transmission and misalignment accommodation.​

Roller Chain Couplings: Consist of two sprockets connected by a roller chain, allowing for slight misalignments and easy installation. They are suitable for low to medium torque applications.​

Selecting the appropriate coupling type is crucial for the efficient and reliable operation of mechanical systems. Factors such as torque requirements, misalignment tolerance, maintenance capabilities, and operational environment should be considered. For more detailed information on coupling types and their applications, you can refer to the Rathi Couplings Blog.