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 |
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Reducing Downtime and Maintenance Costs with Jaw Couplings
Jaw couplings play a crucial role in reducing downtime and maintenance costs in mechanical systems. Here’s how they contribute to improved efficiency and cost-effectiveness:
- Shock Absorption: Jaw couplings feature an elastomeric spider between the hubs, which acts as a shock absorber. It helps dampen vibrations and shock loads, protecting connected equipment from sudden impacts. By minimizing the impact of shocks and vibrations, jaw couplings extend the lifespan of components and reduce the need for frequent repairs or replacements.
- Misalignment Compensation: In real-world applications, shaft misalignment is almost unavoidable due to factors such as temperature variations, foundation settling, or minor assembly errors. Jaw couplings can accommodate angular and parallel misalignment, reducing stress on connected equipment and minimizing wear on shafts and bearings.
- Fail-Safe Design: Jaw couplings are designed with a fail-safe feature. If the elastomeric spider fails due to wear or damage, the jaws of the coupling interlock, allowing the system to continue transmitting torque. This design prevents complete coupling failure and allows the machinery to keep running until scheduled maintenance can be performed.
- Easy Installation and Replacement: Jaw couplings are relatively easy to install and replace, which helps reduce downtime during maintenance or equipment upgrades. With simple set-screw or clamp-type hubs, the couplings can be quickly installed or removed without disassembling the entire system.
- Cost-Effectiveness: Compared to some other types of couplings, jaw couplings are generally more cost-effective. They offer reliable performance and misalignment compensation at a relatively lower cost. Additionally, the extended equipment lifespan and reduced maintenance needs contribute to long-term cost savings.
By providing shock absorption, misalignment compensation, fail-safe operation, easy installation, and cost-effectiveness, jaw couplings enhance the overall reliability and efficiency of mechanical systems, leading to reduced downtime and maintenance costs.
How does a jaw coupling help in torque and rotational speed control?
A jaw coupling plays a vital role in torque and rotational speed control by facilitating efficient power transmission while compensating for misalignments and dampening vibrations. Here’s how a jaw coupling helps in achieving torque and rotational speed control:
- Torque Transmission: Jaw couplings are designed to transmit torque between two shafts with minimal power loss. The elastomer spider, which acts as the flexible element between the two coupling hubs, efficiently transfers torque from one shaft to the other. This precise torque transmission is essential in maintaining consistent rotational motion and controlling the speed of the driven equipment.
- Misalignment Compensation: In rotating machinery, misalignments between the motor and driven equipment are common due to factors like installation errors, thermal expansion, or shaft deflection. Jaw couplings can handle both angular and parallel misalignments. By accommodating these misalignments, jaw couplings ensure smooth operation and prevent unnecessary stress on the equipment, thus contributing to torque and rotational speed control.
- Vibration Damping: Vibrations are an inherent characteristic of rotating machinery and can affect torque and rotational speed stability. The elastomer spider in the jaw coupling acts as a damping element, absorbing and dissipating vibrations. This vibration damping capability reduces the risk of speed fluctuations and enhances overall system stability during operation.
- Start-Up and Overload Protection: During start-up or when the driven equipment experiences sudden overload conditions, there may be spikes in torque and rotational speed. Jaw couplings, with their torsional flexibility, can absorb these sudden torque variations, protecting the equipment from damage and providing smoother start-up and operation.
The combination of precise torque transmission, misalignment compensation, vibration damping, and overload protection makes jaw couplings effective in achieving torque and rotational speed control. However, it is essential to choose the appropriate jaw coupling size and material for the specific application to ensure optimal performance and reliability.
For applications that require even higher torque capacity or stricter speed control, specialized coupling types like gear couplings or servo couplings may be more suitable. These couplings offer advanced features for precision motion control and torque transmission in more demanding applications.
Advantages of Using Jaw Couplings in Mechanical Systems
Jaw couplings offer several advantages in mechanical systems:
- Misalignment Compensation: Jaw couplings can tolerate angular, parallel, and axial misalignments between connected shafts, reducing the need for precise alignment during installation.
- Vibration Damping: The elastomeric spider in the jaw coupling absorbs shocks and vibrations, providing smoother operation and extending the life of connected equipment.
- Backlash-Free: Due to the tight fit between the jaws and the spider, jaw couplings are virtually backlash-free, enabling more accurate and responsive motion transfer.
- High Torque Capacity: Jaw couplings can handle high torque loads, making them suitable for a wide range of industrial applications.
- Easy Installation: With a simple design and few components, jaw couplings are easy to install and maintain.
- Cost-Effective: Compared to other types of couplings, jaw couplings are relatively cost-effective, providing reliable power transmission at a lower cost.
- Fail-Safe Design: In the event of a spider failure, the jaws can still maintain some torque transmission, allowing for limited operation and preventing sudden breakdowns.
Due to these advantages, jaw couplings are widely used in pumps, motors, fans, and various industrial machinery where misalignment, vibration, and torque transmission are critical factors.
editor by CX 2024-04-23