China Best Sales Industry Wholesale Double Disc Type High Torque Flexible Couplings

Product Description

Item No. φD L W L1 M Tighten the strength(N.m)
SG7-8-C19- 19.5 20 1.2 9.4 M2.5 1
SG7-8-C26- 26 25.5 2.5 11.5 M3 1.5
SG7-8-C34- 34 32.3 3.3 14.5 M4 1.5
SG7-8-C39- 39 34.1 4.1 15 M4 2.5
SG7-8-C44- 44 34.5 4.5 15 M4 2.5
SG7-8-C50- 50 40.5 4.5 18 M5 7
SG7-8-C56- 56 45 5 20 M5 7
SG7-8-C68- 68 54 6 24 M6 12
SG7-8-C82- 82 68 8 30 M8 16
SG7-8-C94- 94 68 8 30 M8 28
SG7-8-C104- 104 70 10 30 M8 28

Item No. Rated torque Maximum Torque Max Speed Inertia Moment N.m rad RRO Tilting Tolerance End-play Weight:(g)
SG7-8-C19- 1N.m 2N.m 10000prm 0.65×10-6kg.m² 200N.m/rad 0.04mm 1c ±0.2mm 12
SG7-8-C26- 1.4N.m 2.8N.m 10000prm 1.8×10-6kg.m² 690N.m/rad 0.04mm 1c ±0.2mm 31
SG7-8-C34- 2.8N.m 5.6N.m 10000prm 7.2×10-6kg.m² 1650N.m/rad 0.04mm 1c ±0.2mm 64
SG7-8-C39- 5.8N.m 11.6N.m 10000prm 1.8×10-5kg.m² 2500N.m/rad 0.04mm 1c ±0.2mm 97
SG7-8-C44- 8.7N.m 17.4N.m 10000prm 2.5×10-5kg.m² 2900N.m/rad 0.04mm 1c ±0.2mm 113
SG7-8-C50- 15N.m 30N.m 10000prm 8.2×10-5kg.m² 6700N.m/rad 0.04mm 1c ±0.2mm 195
SG7-8-C56- 25N.m 50N.m 10000prm 1×10-4kg.m² 8400N.m/rad 0.04mm 1c ±0.2mm 263
SG7-8-C68- 55N.m 110N.m 10000prm 1.9×10-4kg.m² 11500N.m/rad 0.04mm 1c ±0.2mm 445
SG7-8-C82- 80N.m 160N.m 10000prm 7×10-4kg.m² 14550N.m/rad 0.04mm 1c ±0.2mm 892
SG7-8-C94- 185N.m 370N.m 10000prm 1.23×10-3kg.m² 16900N.m/rad 0.04mm 1c ±0.2mm 950
SG7-8-C104- 255N.m 510N.m 10000prm 1.86×10-3kg.m² 25100N.m/rad 0.04mm 1c ±0.2mm 1190

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flexible coupling

Can flexible couplings accommodate variable operating conditions and loads?

Yes, flexible couplings are designed to accommodate variable operating conditions and loads in mechanical systems. They offer several features that allow them to adapt to changing conditions and handle different loads effectively. Below are the reasons why flexible couplings are well-suited for such applications:

Misalignment Compensation: Flexible couplings can handle misalignment between shafts, including angular, parallel, and axial misalignment. This capability allows them to accommodate slight shifts in shaft positions that may occur due to thermal expansion, vibration, or other factors, ensuring smooth operation even in changing conditions.

Shock and Vibration Absorption: Flexible couplings can dampen shocks and vibrations that result from sudden changes in load or operating conditions. The flexible element in the coupling acts as a buffer, absorbing and reducing the impact of sudden loads or transient forces, protecting connected equipment and increasing system reliability.

Variable Load Capacity: Flexible couplings come in various designs and materials, each with its load capacity range. Manufacturers provide different coupling models with varying load capacities to accommodate different applications. Properly selecting the right coupling for the specific load conditions ensures reliable power transmission even under varying loads.

Compensation for Thermal Expansion: Temperature changes can cause thermal expansion in mechanical systems, leading to shaft misalignment. Flexible couplings can handle the resulting misalignment, compensating for thermal expansion and ensuring continuous and smooth power transmission.

Torsional Stiffness: Flexible couplings are designed with a balance between flexibility and torsional stiffness. This property allows them to adapt to variable loads while still providing the necessary rigidity for efficient power transmission.

Durable Materials and Designs: Manufacturers produce flexible couplings from durable materials like stainless steel, aluminum, or engineered elastomers. These materials ensure that the couplings can withstand varying operating conditions, including temperature fluctuations, harsh environments, and high loads.

Dynamic Behavior: Flexible couplings have a dynamic behavior that enables them to operate smoothly and efficiently under changing loads and speeds. They can handle variations in rotational speed and torque while maintaining consistent performance.

Application Flexibility: Flexible couplings find applications in a wide range of industries, from automotive and aerospace to industrial and marine. Their versatility allows them to accommodate variable operating conditions and loads in different systems.

Summary: Flexible couplings are well-suited for applications with variable operating conditions and loads. Their ability to compensate for misalignment, absorb shocks and vibrations, and handle thermal expansion make them reliable components in mechanical systems. The availability of various coupling designs and materials allows for the selection of the appropriate coupling based on the specific application requirements, ensuring optimal performance and longevity in variable conditions.

flexible coupling

What are the differences between flexible couplings and rigid couplings in terms of performance?

Flexible couplings and rigid couplings are two distinct types of couplings used in mechanical systems, and they differ significantly in terms of performance and applications.

  • Torsional Flexibility: The primary difference between flexible and rigid couplings lies in their ability to handle misalignments and torsional flexibility. Flexible couplings are designed with elements, such as elastomeric inserts or metal bellows, that can deform or twist to accommodate shaft misalignments, angular offsets, and axial movements. On the other hand, rigid couplings do not have any flexibility and maintain a fixed connection between the shafts, which means they cannot compensate for misalignment.
  • Misalignment Compensation: Flexible couplings can absorb and mitigate misalignment between shafts, reducing stress and wear on connected components. In contrast, rigid couplings require precise alignment during installation, and any misalignment can lead to increased loads on the shafts and bearings, potentially leading to premature failure.
  • Vibration Damping: Flexible couplings, especially those with elastomeric elements, offer damping properties that can absorb and dissipate vibrations. This damping capability reduces the transmission of vibrations and shocks through the drivetrain, improving the overall system performance and protecting connected equipment. Rigid couplings, being solid and without damping elements, do not provide this vibration damping effect.
  • Backlash: Flexible couplings can have some degree of backlash due to their flexibility, particularly in certain designs. Backlash is the play or free movement between connected shafts. In contrast, rigid couplings have minimal or no backlash, providing a more precise and immediate response to changes in rotational direction.
  • Torque Transmission: Rigid couplings are more efficient in transmitting torque since they do not have any flexible elements that can absorb some torque. Flexible couplings, while capable of transmitting substantial torque, may experience some power loss due to the deformation of their flexible components.
  • Applications: Flexible couplings are widely used in applications that require misalignment compensation, damping, and shock absorption, such as pumps, motors, and industrial machinery. On the other hand, rigid couplings are used in situations where precise alignment is critical, such as connecting shafts of well-aligned components or shafts that require synchronous operation, like in some encoder applications.

In summary, flexible couplings excel in applications where misalignment compensation, vibration damping, and shock absorption are required. They are more forgiving in terms of alignment errors and can accommodate dynamic loads. Rigid couplings, on the other hand, are used in situations where precise alignment and zero backlash are essential, ensuring direct and immediate power transmission between shafts.

flexible coupling

What role does a flexible coupling play in reducing downtime and maintenance costs?

A flexible coupling plays a significant role in reducing downtime and maintenance costs in industrial machinery and rotating equipment. Here are the key ways in which flexible couplings contribute to these benefits:

  • Misalignment Compensation: One of the primary functions of a flexible coupling is to accommodate misalignment between two connected shafts. Misalignment can occur due to various factors such as thermal expansion, foundation settling, or manufacturing tolerances. By allowing for misalignment, flexible couplings reduce the transmission of harmful forces and stresses to connected components, minimizing wear and preventing premature failures that could lead to costly downtime and repairs.
  • Vibration Damping: Flexible couplings have inherent damping properties due to the elastomeric or flexible elements they incorporate. These elements absorb and dissipate vibration and shock loads that may arise from the operation of rotating machinery. By dampening vibrations, flexible couplings protect the connected equipment from excessive wear and fatigue, extending their service life and reducing the need for frequent maintenance or replacement.
  • Shock Load Absorption: In applications where sudden loads or shocks are common, such as in heavy machinery or high-speed equipment, flexible couplings act as shock absorbers. They can absorb and dissipate the impact energy, preventing damage to the machinery and minimizing downtime caused by unexpected failures or breakdowns.
  • Easy Installation and Alignment: Flexible couplings are designed for ease of installation and alignment. Unlike rigid couplings that require precise shaft alignment, flexible couplings can tolerate some degree of misalignment during installation. This feature simplifies the setup process, reduces installation time, and lowers the risk of misalignment-related issues, ultimately minimizing downtime during initial installation or replacement of couplings.
  • Reduced Maintenance Frequency: The ability of flexible couplings to handle misalignment and dampen vibrations results in reduced wear on bearings, seals, and other connected components. Consequently, the frequency of maintenance intervals can be extended, reducing the need for frequent inspections and component replacements. This directly translates to lower maintenance costs and less downtime for maintenance tasks.
  • Equipment Protection: By reducing the transmission of shock loads and vibrations, flexible couplings act as protective barriers for connected equipment. They help prevent catastrophic failures and subsequent damage to expensive machinery, avoiding unplanned shutdowns and costly repairs.

Overall, flexible couplings are critical components that improve the reliability and longevity of rotating equipment. Their ability to handle misalignment, dampen vibrations, and protect against shock loads contributes to reduced downtime, lower maintenance costs, and increased productivity in industrial applications.

China Best Sales Industry Wholesale Double Disc Type High Torque Flexible Couplings  China Best Sales Industry Wholesale Double Disc Type High Torque Flexible Couplings
editor by CX 2024-02-04

flexible disc coupling

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