Product Description

Gear Coupling

Triple crowned teeth hub is manufactured on a fully automatic hobbing machine with built in crowing attachment which is controlled by hydraulic & electronic systems. Under the misalignment condition of 2 shafts on the equipment, due to the curvature on teeth flank the contact area is much more and therefore, there is increase in life of coupling.

Gear couplings are power intensive and considered as the king of the coupling types. You would see the gear couplings being adopted for wide range of application in drive technologies. Hence, we love love gear coupling (and I think, you would too!).

Gear Couplings and Univer sal Joints

Gear couplings and universal joints are used in similar applications. Gear couplings have higher torque densities than universal joints designed to fit a given space, while universal joints induce lower vibrations. The limit on torque density in universal joints is due to the limited cross sections of the cross and yoke.

The gear teeth in a gear coupling have high backlash to allow for angular misalignment. The excess backlash can contribute to vibration.


Gear couplings like all other shaft coupling devices perform the basic functions of connecting 2 shafts to transmit torque and compensate for misalignment. Gear couplings though are the king of the coupling types. While each type of coupling has its own niche, gear couplings are more power intensive, have more modifications, and a wider size, torque, and bore range than all the others. Gear couplings can also perform at extremely high rates of speed. As inferred by the name, gear couplings use the meshing of gear teeth to transmit the torque and to provide for misalignment. 


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clamp coupling

Comparison of Beam Couplings to Other Coupling Types in Terms of Backlash and Torsional Stiffness

When considering coupling options for motion control systems, two critical performance characteristics to evaluate are backlash and torsional stiffness. Backlash refers to the amount of rotational play or free movement between the connected shafts, while torsional stiffness indicates a coupling’s ability to resist torsional deformation when transmitting torque. Let’s compare beam couplings to other common coupling types in terms of these factors:

  • Beam Couplings:

    Beam couplings generally exhibit low to minimal backlash due to their single or multiple helical beam design. The helical beams provide some flexibility to accommodate misalignment, but they maintain a relatively tight connection between the shafts, resulting in low backlash. This characteristic is especially valuable in precision motion control applications where eliminating play is essential for accurate positioning.

    In terms of torsional stiffness, beam couplings offer moderate to high values. The helical beams provide good torsional rigidity, making them suitable for applications that demand precise torque transmission and minimal torsional deflection. However, compared to other types like disc or jaw couplings, beam couplings may have slightly lower torsional stiffness.

  • Disc Couplings:

    Disc couplings are known for their excellent torsional stiffness, providing robust torque transmission and minimal torsional deformation. They are ideal for applications requiring high precision and where torsional rigidity is critical.

    Regarding backlash, disc couplings typically have low to negligible values. Their design allows for precise and direct transmission of torque between the shafts, resulting in minimal rotational play.

  • Jaw Couplings:

    Jaw couplings offer low to moderate torsional stiffness, making them suitable for applications with moderate torque requirements. They provide some flexibility to handle misalignment, but their torsional rigidity is not as high as disc couplings or certain types of beam couplings.

    Backlash in jaw couplings can vary depending on the specific design and materials. Some jaw couplings may have slightly more backlash compared to beam or disc couplings due to the elastomeric spider element used in their construction.

  • Oldham Couplings:

    Oldham couplings offer low backlash performance due to their unique three-piece design, which incorporates two outer hubs and a middle disk. The design allows for consistent torque transmission and minimal play between the shafts.

    Torsional stiffness in Oldham couplings is moderate, providing a balance between flexibility and rigidity. While not as rigid as disc couplings, they still offer reliable torque transmission for various motion control applications.

In summary, beam couplings offer low to minimal backlash and moderate to high torsional stiffness, making them suitable for precision motion control applications that require a balance between flexibility and rigidity. Disc couplings provide excellent torsional stiffness and low backlash, making them an ideal choice for high-precision applications. Jaw couplings and Oldham couplings offer moderate performance in both backlash and torsional stiffness and are well-suited for applications with moderate torque and misalignment compensation requirements.

When selecting a coupling type, consider the specific needs of your application, such as the required precision, torque capacity, and misalignment compensation. Each coupling type has its advantages and limitations, and choosing the right one will contribute to the overall performance and reliability of your motion control system.

clamp coupling

Safety Considerations for Installing or Using Beam Couplings in Industrial Setups

When installing or using beam couplings in industrial setups, several safety considerations should be taken into account to ensure the safe and reliable operation of the motion control systems. Here are some important safety considerations:

  • Proper Installation:

    Ensure that beam couplings are correctly installed according to the manufacturer’s instructions. Follow the recommended torque values for tightening set screws or clamps to avoid over-tightening or under-tightening, which could lead to coupling failure or excessive wear.

  • Shaft Alignment:

    Accurate shaft alignment is crucial to prevent unnecessary stress on the coupling and connected components. Misalignment can lead to premature wear, vibrations, and reduced system performance. Utilize alignment tools and techniques to achieve precise shaft alignment within the coupling’s specified tolerances.

  • Overloading:

    Avoid exceeding the beam coupling’s rated torque capacity or maximum axial load. Overloading the coupling can lead to deformation, coupling failure, or damage to connected equipment. Ensure that the coupling is appropriately sized for the application’s torque requirements.

  • Regular Inspection:

    Perform routine inspections of beam couplings to check for signs of wear, damage, or misalignment. Address any issues promptly and replace worn or damaged couplings to prevent unexpected failures.

  • Environmental Conditions:

    Consider the operating environment when selecting beam couplings. Different materials offer varying levels of resistance to corrosion, temperature extremes, and other environmental factors. Choose a material that can withstand the specific conditions of the industrial setup.

  • Protective Enclosures:

    If the beam couplings are exposed to moving parts or hazardous equipment, consider using protective enclosures or guards to prevent accidental contact and ensure operator safety.

  • Regular Maintenance:

    Follow a regular maintenance schedule for the entire motion control system, including beam couplings. Lubricate moving parts as recommended by the manufacturer and replace worn components to maintain reliable operation.

  • Training and Awareness:

    Ensure that personnel involved in the installation, operation, and maintenance of the motion control system are properly trained and aware of safety procedures. Emphasize the importance of following safety guidelines to prevent accidents and injuries.

By taking these safety considerations into account, industrial setups can enhance the safety and efficiency of their motion control systems. Regular maintenance, proper installation, and adherence to safety guidelines are essential to ensuring the longevity and reliable performance of beam couplings and the overall safety of the workplace.

clamp coupling

Beam Coupling: Function and Role in Mechanical Systems

A beam coupling, also known as a helical coupling or helical beam coupling, is a type of flexible coupling used in mechanical systems to connect two shafts while compensating for misalignment and transmitting torque. It consists of one or more helical beams (usually made of metal) that connect the shafts and allow for angular, axial, and parallel misalignment while maintaining a torsionally rigid connection. Here’s how a beam coupling functions in mechanical systems:


A beam coupling typically has two ends, each with a helical beam. The beams are oriented at opposite angles to create a helix shape. The beams can vary in number, and some designs may include additional features like slits or keyways to enhance flexibility or improve torque capacity.

Misalignment Compensation:

When the two shafts connected by a beam coupling are misaligned, the helical beams flex, allowing the coupling to compensate for different types of misalignment. Angular misalignment occurs when the shafts are not collinear, axial misalignment when they are not on the same axis, and parallel misalignment when the shafts are not at the same height. The flexibility of the helical beams allows the coupling to accommodate these misalignments, reducing the stresses on the connected components.

Torque Transmission:

The helical beams of a beam coupling efficiently transmit torque from one shaft to the other. The beams twist and deform slightly under the applied torque but return to their original shape once the torque is removed. This torsional rigidity ensures that the coupling efficiently transfers rotational power while minimizing backlash and maintaining accurate positioning in motion control systems.

Damping and Vibration Absorption:

Beam couplings can provide some level of vibration dampening due to their inherent flexibility. The slight deformation of the beams can absorb shocks and vibrations, reducing the transmission of vibrations between the connected shafts.


Beam couplings find applications in various mechanical systems, including robotics, CNC machines, stepper motor drives, and other motion control systems. They are especially useful in applications that require moderate misalignment compensation, high torsional rigidity, and low backlash.


While beam couplings offer several advantages, they do have some limitations. They may not be suitable for applications with high misalignment requirements or high torque loads, as excessive misalignment or torque can cause premature wear or failure of the coupling. Additionally, beam couplings may have limited axial stiffness, making them less suitable for applications with significant axial loads.

In summary, a beam coupling is a flexible coupling with helical beams that allows for misalignment compensation, efficient torque transmission, and some vibration dampening. Its design and flexibility make it an excellent choice for various mechanical systems, particularly those that require moderate misalignment compensation and high torsional rigidity.

China manufacturer Gear Couplings Flexible Pulley Lovejoy Jaw HRC Fluid Hydraulic Pin Rigidnylon Stainless Steel Rubber Motor Shaft Beam Chains Flange Nm Drum Curve Rolling Spacer  China manufacturer Gear Couplings Flexible Pulley Lovejoy Jaw HRC Fluid Hydraulic Pin Rigidnylon Stainless Steel Rubber Motor Shaft Beam Chains Flange Nm Drum Curve Rolling Spacer
editor by CX 2024-03-10