China Good quality Custom Steel Material Rigid Shaft Flexible Spring Shaft Snake Grid Coupling

Product Description

Steel Material Rigid Shaft Flexible Spring Shaft Snake Grid Coupling


It is a kind of metal elastic variable stiffness coupling with advanced structure ,which transmits torque by serpentine spring plate embedded in the tooth groove of 2 half couplings ,mainly composed of 2 half couplings,two half covers,two sealing rings and serpentine spring plate.



1.The serpentine spring as the elastic element, the elastic strong at the same time, greatly improves the grid coupling torque, widely used in heavy machinery and general    machinery.The serpentine spring special technology department, has long service life, allowing higher speed, has good ability to compensate in the axial, radial and angle

2.High transmission efficiency, start safety. Transmission efficiency of up to 99.47%, short-time overload capacity is 2 times the rated torque, operation safety.

3.Simple structure, convenient assembly and disassembly, long service life.

4.Damping effect is good to avoid the resonance.



Basic Parameter


Model Nominal Speed Y,Z Bore L L2 D C KG    
Torque r/min d1,d2 J Grease
Nm   Max Min KG.M2 Kg
JS1 45 4500 28 18 47 66 95 3 1.91 0.00141 0.5712
JS2 140 35 22 47 68 105 2.59 0.057123 0.0408
JS3 224 42 25 50 70 115 3.36 0.00327 0.0544
JS4 400 50 32 60 80 130 5.45 0.00727 0.068
JS5 630 4350 56 40 63 92 150 7.26 0.00119 0.0862
JS6 900 4125 65 40 76 95 160 10.44 0.0185 0.113
JS7 1800 3600 80 55 89 116 190 17.7 0.571 0.172
JS8 3150 95 65 98 122 210 25.42 0.0787 0.254
JS9 5600 2440 110 75 120 155 250 5 42.22 0.178 0.426
JS10 8000 2250 120 85 127 162 270 54.45 0.27 0.505
JS11 12500 2571 140 90 149 192 310 6 81.27 0.514 0.735
JS12 18000 1800 170 110 162 195 346 121 0.989 0.908
JS13 25000 1650 200 120 184 201 384 178 1.85 1.135
JS14 35500 1500 200 140 183 271 450 234.26 3.49 1.952
JS15 50000 1350 240 160 198 279 500 316.89 5.82 2.815
JS16 63000 1225 280 180 216 304 566 6 448.1 10.4 3.496
JS17 90000 1100 300 200 239 322 630 619.71 18.3 3.76
JS18 125000 1050 320 240 260 356 675 776.34 26.1 4.4
JS19 160000 900 360 280 280 355 756 1058.27 43.5 5.63
JS20 224000 820 380 300 305 432 845 13 1425.56 75.5 10.53
JS21 315000 730 420 320 325 490 920 1786.49 113 16.07
JS22 400000 680 450 340 345 546 1000 2268.64 175 24.06
JS23 500000 630 480 360 368 648 1087 2950.82 339 33.82
JS24 630000 580 460 400 401 698 1180 3936.3 524 50.17
JS25 800000 540 500 420 432 762 1260 4686.19 711 67.24


Production workshop

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rigid coupling

What Are the Maintenance Requirements for Rigid Couplings?

Rigid couplings are known for their simplicity and low maintenance requirements. Since they do not have moving parts or flexible elements, there are minimal wear and tear issues. However, some maintenance considerations for rigid couplings include:

1. Regular Inspection: It is essential to perform periodic inspections of the rigid couplings to check for any signs of wear, damage, or misalignment. Regular inspections can help identify potential issues early and prevent further problems.

2. Shaft Alignment: Proper shaft alignment is critical for rigid couplings. During installation or whenever maintenance work is performed on the connected machinery, the shaft alignment must be checked and adjusted if necessary. Misalignment can lead to premature coupling failure and cause additional stress on connected equipment.

3. Lubrication: Most rigid couplings do not require lubrication since they have no moving parts. However, some special designs or large-sized couplings may have set screws or other fasteners that require lubrication. It is essential to follow the manufacturer’s guidelines regarding lubrication, if applicable.

4. Corrosion Protection: In corrosive environments, protecting the rigid couplings from corrosion is crucial. This can be achieved through the use of corrosion-resistant materials or coatings.

5. Periodic Re-tightening: If the rigid coupling uses set screws or other fasteners, periodic re-tightening may be necessary to maintain the integrity of the connection. This is particularly important in applications with high vibrations or heavy loads.

6. Temperature Considerations: Rigid couplings may experience thermal expansion or contraction, especially in high-temperature environments. It is essential to consider the thermal expansion characteristics of the coupling material and the connected shafts to ensure proper functioning under varying temperatures.

7. Professional Maintenance: In complex systems or critical applications, it is advisable to seek professional maintenance and alignment services. Expert technicians can ensure proper installation, alignment, and maintenance of rigid couplings, reducing the risk of unexpected failures.

Overall, rigid couplings are designed for reliability and longevity, and proper maintenance practices can further enhance their performance and lifespan. Regular inspections and alignment checks are vital for identifying and addressing potential issues before they escalate into costly problems.

rigid coupling

Can Rigid Couplings Be Used in Applications with Varying Operating Temperatures?

Rigid couplings are versatile mechanical components that can be used in a wide range of applications, including those with varying operating temperatures. However, the selection of the appropriate material for the rigid coupling is crucial to ensure its reliable performance under different temperature conditions.

Material Selection: The choice of material for the rigid coupling depends on the specific operating temperature range of the application. Common materials used in manufacturing rigid couplings include steel, stainless steel, and aluminum, among others. Each material has its own temperature limitations:

Steel: Rigid couplings made from steel are suitable for applications with moderate to high temperatures. Steel couplings can handle temperatures ranging from -40°C to around 300°C, depending on the specific grade of steel used.

Stainless Steel: Stainless steel rigid couplings offer higher corrosion resistance and can be used in applications with more demanding temperature environments. They can withstand temperatures from -80°C to approximately 400°C.

Aluminum: Aluminum rigid couplings are commonly used in applications with lower temperature requirements, typically ranging from -50°C to around 120°C.

Thermal Expansion: When selecting a rigid coupling for an application with varying temperatures, it is essential to consider thermal expansion. Different materials have different coefficients of thermal expansion, meaning they expand and contract at different rates as the temperature changes. If the operating temperature fluctuates significantly, the thermal expansion of the rigid coupling and the connected components must be carefully accounted for to avoid issues with misalignment or binding.

Extreme Temperature Environments: For applications with extremely high or low temperatures beyond the capabilities of traditional materials, specialized high-temperature alloys or composites may be required. These materials can withstand more extreme temperature conditions but may come with higher costs.

Lubrication: The choice of lubrication can also play a role in the suitability of rigid couplings for varying temperature applications. In high-temperature environments, consideration should be given to using high-temperature lubricants that can maintain their effectiveness and viscosity at elevated temperatures.

In conclusion, rigid couplings can indeed be used in applications with varying operating temperatures, but careful material selection, consideration of thermal expansion, and appropriate lubrication are essential to ensure reliable and efficient performance under changing temperature conditions.

rigid coupling

Limitations and Disadvantages of Using Rigid Couplings:

Rigid couplings offer several advantages in providing a strong and direct connection between shafts, but they also have certain limitations and disadvantages that should be considered in certain applications:

  • No Misalignment Compensation: Rigid couplings are designed to provide a fixed connection with no allowance for misalignment between shafts. As a result, any misalignment, even if slight, can lead to increased stress on connected components and cause premature wear or failure.
  • Transmit Shock and Vibration: Rigid couplings do not have any damping or vibration-absorbing properties, which means they can transmit shock and vibration directly from one shaft to another. In high-speed or heavy-duty applications, this can lead to increased wear on bearings and other components.
  • No Torque Compensation: Unlike flexible couplings, rigid couplings cannot compensate for torque fluctuations or angular displacement between shafts. This lack of flexibility may not be suitable for systems with varying loads or torque requirements.
  • Higher Stress Concentration: Rigid couplings can create higher stress concentration at the points of connection due to their inflexibility. This can be a concern in applications with high torque or when using materials with lower fatigue strength.
  • More Challenging Installation: Rigid couplings require precise alignment during installation, which can be more challenging and time-consuming compared to flexible couplings that can tolerate some misalignment.
  • Increased Wear: The absence of misalignment compensation and vibration absorption can lead to increased wear on connected components, such as bearings, shafts, and seals.
  • Not Suitable for High Misalignment: While some rigid couplings have limited ability to accommodate minor misalignment, they are not suitable for applications with significant misalignment, which could lead to premature failure.

Despite these limitations, rigid couplings are still widely used in many applications where precise alignment and a strong, permanent connection are required. However, in systems with significant misalignment, vibration, or shock loads, flexible couplings may be a more suitable choice to protect the connected components and improve overall system performance and longevity.

China Good quality Custom Steel Material Rigid Shaft Flexible Spring Shaft Snake Grid Coupling  China Good quality Custom Steel Material Rigid Shaft Flexible Spring Shaft Snake Grid Coupling
editor by CX 2024-01-10

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