Rigid Coupling

Rigid Coupling

YINUO, a distinguished ductile iron grooved manufacturer and supplier in China, steadfastly provides a range of premium rigid couplings at competitive factory prices. Crafted with meticulous attention to detail for durability and reliability, our products ensure optimal performance and satisfaction for our esteemed customers.

  • The production workshop has more than 50 people, 3 R&D designers, 5 production lines.
  • A daily output value of more than 2 million.
  • Support processing customization, processing according to drawings.
  • We have won unanimous praise from customers in more than 30 countries and regions such as Hong Kong, Vietnam, Pakistan, Chile, Bolivia etc.

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How to Use Rigid Coupling

Rigid coupling fittings are mechanical devices used to join ductile iron or steel piping components together in a rigid, bolted connection.

  • They are used with piping elements that have modular grooved ends, such as grooved pipe, elbows, tees, etc. Made of steel or ductile iron.
  • Have two halves that bolt together around the grooved ends of the pipes being joined. The inner edges have machined serrations that mate with the pipe grooves.
  • When bolted, the serrations cut into the pipe grooves to form a rigid, mechanical bond that joins the pipes like a flangeless welded joint.
  • Manufactured in various sizes to join piping schedules 5 to 40.

Our Two Types of Couplings

We have rigid couplings and flexible couplings, which are two different types of mechanical coupling devices. Their main function is to connect two shafts to transmit rotational motion and torque. However, they have obvious differences.

1. Rigid coupling

Features:

  • Simple and compact structure, easy installation and maintenance.
    Can transmit large torque.
  • Due to the lack of elasticity, the relative displacement between the two shafts (such as axial, radial or angular offset) cannot be compensated.
  • No additional vibration absorption effect will be generated during the work process.

Applicable occasions: Suitable for occasions with high requirements for the centering accuracy of the two shafts, stable working conditions, and no need for frequent disassembly.

2. Flexible coupling

Features:

  • Can compensate for certain axial, radial and angular deviations.
  • Has good vibration reduction performance, can reduce the impact and noise generated when the machine is running.
  • Applicable to working environments that require frequent starting, stopping or reversing.
  • Compared with rigid couplings, its structure is more complex and the cost is higher.

Applicable occasions: Applicable to equipment with low centering accuracy, slight vibration or frequent adjustment.

Specifications Of Rigid Coupling Fittings By YINUO

Our couplings are commonly used in sizes from 3 – 12″ | DN25 – DN300, etc., with pressures up to 1000 psi, 6895 kPa, 69 bar, etc. These are some basic sizes. For more detailed sizes, please click below:

Rigid coupling sizes