Understanding the Major Types of Couplings in Power Transmission​
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Rathi Couplings
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In mechanical systems, couplings are essential components that connect two shafts to transmit power, accommodate misalignments, and absorb shocks. They are broadly categorized into two main types: Material Flexing Couplings and Mechanical Flexing Couplings.​
Rathi Couplings
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Rathi Couplings
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Rathi Couplings
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Material Flexing Couplings
These couplings derive their flexibility from the deformation of elastic materials like rubber or plastic. They typically do not require lubrication and are designed to accommodate various misalignments.​
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Jaw Couplings
Jaw couplings consist of two hubs with interlocking jaws and an elastomeric element (spider) between them. They are ideal for applications requiring vibration damping and accommodate angular and parallel misalignments.​
Rathi Couplings
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Rathi Couplings
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Rathi Couplings
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Sleeve Couplings
Also known as bushing couplings, these use an elastomeric sleeve to transmit torque. They are suitable for low to medium torque applications and can handle moderate misalignments.​
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Wikipedia
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Rathi Couplings
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Rathi Couplings

Tyre Couplings
Tyre couplings feature a flexible tyre element that connects two hubs. They offer high misalignment capacity, excellent shock absorption, and ease of maintenance, making them suitable for various industrial applications.​
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Disc Couplings
Disc couplings use thin, flexible metal discs to transmit torque while accommodating misalignments. They are torsionally rigid and suitable for high-speed applications.​
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Wikipedia
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Diaphragm Couplings
These couplings utilize a series of diaphragms to transmit torque. They can handle high torque and accommodate angular, axial, and parallel misalignments, making them ideal for high-speed machinery.​
Wikipedia

Mechanical Flexing Couplings
Mechanical flexing couplings accommodate misalignments through the movement of mechanical components and typically require lubrication.​
Rathi Couplings
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Rathi Couplings
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Rathi Couplings
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Gear Couplings
Gear couplings consist of two hubs with external teeth that mesh with internal teeth in flanged sleeves. They transmit high torque and accommodate angular and axial misalignments.​
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Grid Couplings
Grid couplings use a flexible grid element that connects two hubs. They offer excellent shock absorption and are suitable for high-torque applications.​
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Roller Chain Couplings
These couplings use a roller chain to connect two sprocketed hubs. They are simple, cost-effective, and suitable for low to medium torque applications.​
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Understanding the various types of couplings and their specific applications is crucial for selecting the right component for your mechanical system. Each coupling type offers unique advantages, and the choice depends on factors like torque requirements, misalignment tolerances, and operational conditions.​

For more detailed information on couplings and their applications, you can visit the Rathi Couplings blog: Major Different Types of Couplings.