Product Description
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| Item No. | φD | L | L1 | W | M | Tighten the strength(N.m) |
| SG7-11-30- | 30 | 50 | 18.5 | 13 | M3(4) | 1.2 |
| SG7-11-40- | 40 | 66 | 25 | 16 | M4(6) | 2.7 |
| SG7-11-55- | 55 | 78 | 30 | 18 | M5(4) | 6 |
| SG7-11-65- | 65 | 90 | 35 | 20 | M5(6) | 6 |
| SG7-11-80- | 80 | 114 | 45 | 24 | M6(8) | 10 |
| SG7-11-95- | 95 | 126 | 50 | 26 | M8(4) | 35 |
| SG7-11-105- | 105 | 140 | 56 | 28 | M8(4) | 35 |
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| Item No. | Rated torque | Maximum Torque | Max Speed | Inertia Moment | N.m rad | Tilting Tolerance | End-play | Weight:(g) |
| SG7-11-30- | 7.4N.m | 14.8N.m | 20000prm | 8.7×10-4kg.m² | 510N.m/rad | 1.0c | +0.6mm | 50 |
| SG7-11-40- | 9.5N.m | 19N.m | 15000prm | 1.12×10-3kg.m² | 550N.m/rad | 1.0c | +0.8mm | 120 |
| SG7-11-55- | 34N.m | 68N.m | 13000prm | 4.5×10-3kg.m² | 1510N.m/rad | 1.0c | +0.8mm | 280 |
| SG7-11-65- | 95N.m | 190N.m | 10500prm | 9.1×10-3kg.m² | 2800N.m/rad | 1.0c | +0.8mm | 450 |
| SG7-11-80- | 135N.m | 270N.m | 8600prm | 1.9×10-2kg.m² | 3600N.m/rad | 1.0c | +1.0mm | 960 |
| SG7-11-95- | 230N.m | 460N.m | 7500prm | 2.2×10-2kg.m² | 4700N.m/rad | 1.0c | +1.0mm | 2310 |
| SG7-11-105- | 380N.m | 760N.m | 6000prm | 3.3×10-2kg.m² | 5800N.m/rad | 1.0c | +1.0mm | 3090 |
How does a flexible coupling help in power transmission efficiency?
Flexible couplings play a crucial role in improving power transmission efficiency in various mechanical systems. Here are the ways in which flexible couplings contribute to enhanced efficiency:
- Misalignment Compensation: In real-world applications, it is challenging to achieve perfect alignment between shafts due to manufacturing tolerances, thermal expansion, or external forces. Flexible couplings can accommodate both angular and parallel misalignments between the driving and driven shafts. By doing so, they ensure that the torque is transmitted smoothly and efficiently despite misalignment, reducing power losses due to misaligned shafts.
- Vibration Damping: Vibrations in mechanical systems can lead to energy losses and premature wear of components. Flexible couplings with vibration-damping properties can absorb and dampen vibrations generated during operation. By reducing the transmission of vibrations, these couplings help to maintain power transmission efficiency and extend the lifespan of connected equipment.
- Shock Load Absorption: During start-up or sudden changes in operating conditions, equipment may experience shock loads. Flexible couplings are designed to absorb and cushion these shock loads, preventing sudden impacts on the system. By minimizing the shock load’s effect, flexible couplings contribute to smoother power transmission and reduced stress on components.
- Torsional Stiffness: While flexible couplings allow for misalignment compensation, they still exhibit a certain degree of torsional stiffness. This stiffness ensures that the majority of the torque is efficiently transmitted from the driving to the driven shaft, minimizing power losses due to deformation or bending of the coupling.
- Reduced Friction and Wear: Flexible couplings typically have a simple design with fewer moving parts. This simplicity leads to reduced friction and wear compared to more complex coupling types. Lower friction means less energy dissipation, resulting in improved power transmission efficiency.
- Compatibility with Various Applications: Flexible couplings come in a wide range of designs and materials to suit different applications. Whether it’s high-speed machinery, heavy-duty equipment, or precision systems, there are flexible coupling options optimized for each use case. Selecting the appropriate coupling for the specific application ensures efficient power transmission.
In summary, flexible couplings enhance power transmission efficiency by compensating for misalignment, damping vibrations, absorbing shock loads, providing torsional stiffness, reducing friction and wear, and offering compatibility with diverse applications. The combination of these features contributes to improved overall system efficiency and helps optimize the performance of mechanical systems.
What are the factors influencing the thermal performance of a flexible coupling?
The thermal performance of a flexible coupling can be influenced by several factors, including:
- Material Composition: The material used in the construction of the flexible coupling can impact its thermal performance. Different materials have varying thermal conductivity and heat resistance properties, which can affect how well the coupling dissipates heat generated during operation.
- Operating Speed: The rotational speed of the flexible coupling can influence its thermal behavior. Higher speeds can result in increased friction, leading to more heat generation. Couplings designed for high-speed applications often incorporate features to manage and dissipate heat effectively.
- Power Transmission: The amount of power transmitted through the flexible coupling plays a role in its thermal performance. Higher power levels can lead to increased heat generation, and the coupling must be designed to handle and dissipate this heat without compromising its integrity.
- Environmental Conditions: The ambient temperature and surrounding environment can impact the thermal performance of the flexible coupling. In high-temperature environments, the coupling may need to dissipate heat more efficiently to avoid overheating.
- Lubrication: Proper lubrication is essential for managing friction and heat generation within the coupling. Insufficient or inappropriate lubrication can lead to increased wear and heat buildup.
- Design and Geometry: The design and geometry of the flexible coupling can influence its thermal performance. Some coupling designs incorporate features such as cooling fins, ventilation, or heat sinks to enhance heat dissipation.
- Load Distribution: The distribution of loads across the flexible coupling can affect how heat is generated and dissipated. Proper load distribution helps prevent localized heating and reduces the risk of thermal issues.
Manufacturers consider these factors during the design and selection of flexible couplings to ensure they can handle the thermal demands of specific applications. Proper application and maintenance of the flexible coupling are also essential for optimizing its thermal performance and overall efficiency.
Can flexible couplings accommodate high torque and high-speed applications?
Yes, flexible couplings can accommodate both high torque and high-speed applications, but the suitability depends on the specific design and material of the flexible coupling. Different types of flexible couplings have varying torque and speed capacities, and it’s crucial to select the right type of coupling based on the application requirements.
High Torque Applications:
Some flexible couplings, such as gear couplings and disc couplings, are designed to handle high torque levels. Gear couplings consist of toothed hubs that mesh with each other, providing a robust and efficient torque transmission. They are commonly used in heavy-duty industrial applications, such as steel mills, mining equipment, and power generation plants, where high torque loads are prevalent.
Disc couplings are also suitable for high torque applications. They use a series of flexible metal discs that can handle significant torque while compensating for misalignment. Disc couplings are often used in high-speed machinery and critical applications where precise torque transmission is essential.
High-Speed Applications:
Flexible couplings can also be used in high-speed applications. For instance, certain disc couplings, elastomeric couplings, and grid couplings are capable of handling high rotational speeds. These couplings have low inertia, which means they can respond quickly to changes in speed and provide efficient power transmission at high RPMs.
Elastomeric couplings, such as jaw couplings and tire couplings, are commonly used in various industrial applications, including pumps, compressors, and fans, where both torque and speed requirements are high. They offer good flexibility and damping properties, making them suitable for applications with high-speed variations and vibrations.
Considerations:
When selecting a flexible coupling for high torque and high-speed applications, several factors should be considered:
- The torque and speed ratings provided by the coupling manufacturer should be checked to ensure they meet or exceed the application’s requirements.
- The design and materials of the coupling should be suitable for the specific operating conditions, including temperature, environment, and potential exposure to corrosive substances.
- Proper alignment and installation of the coupling are critical to ensure optimal performance and prevent premature wear.
- In some cases, it may be necessary to use additional components, such as torque limiters or speed reducers, to protect the coupling and the connected equipment from excessive loads or speed fluctuations.
In conclusion, flexible couplings can indeed accommodate high torque and high-speed applications, but the appropriate coupling type and proper selection are essential to ensure reliable and efficient performance in these demanding conditions.
editor by CX 2023-10-04