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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Using Jaw Couplings in Applications with Varying Operating Temperatures
Jaw couplings are versatile and can be used in a wide range of operating temperatures. The suitability of jaw couplings for applications with varying temperatures depends on the specific material used in their construction.
Typically, jaw couplings are available in various materials, including:
- Aluminum: Aluminum jaw couplings are suitable for applications with moderate temperature ranges. They offer good strength and are lightweight, making them ideal for many industrial applications.
- Steel: Steel jaw couplings have higher strength and are suitable for applications with higher temperatures. They can handle more demanding conditions and are commonly used in heavy-duty machinery and equipment.
- Stainless Steel: Stainless steel jaw couplings provide excellent corrosion resistance and are well-suited for applications that require resistance to moisture, chemicals, and high temperatures.
- Other Specialized Materials: Some jaw couplings are made from specialized materials, such as high-temperature alloys or composite materials, to handle extreme operating conditions.
When selecting a jaw coupling for an application with varying operating temperatures, it’s crucial to consider the specific temperature range the coupling will experience. Choosing the right material ensures that the jaw coupling can perform reliably without undergoing excessive wear or premature failure due to temperature-induced stresses.
In summary, jaw couplings can indeed be used in applications with varying operating temperatures, provided that the appropriate material is chosen based on the specific temperature range and environmental conditions of the application.
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.
Selecting the Appropriate Jaw Coupling Size
Choosing the right jaw coupling size for a specific application involves considering several factors:
- Torque Requirements: Determine the maximum torque that the coupling will need to transmit in the application. Make sure to account for any peak or intermittent loads.
- Shaft Diameter: Measure the diameter of the shafts to be connected. The coupling’s bore size should match the shaft diameter for proper fit and secure power transmission.
- Speed: Consider the rotational speed of the application. High-speed applications may require special high-speed jaw couplings.
- Misalignment Compensation: Evaluate the level of misalignment present in the system, including angular, parallel, and axial misalignment. Choose a jaw coupling with appropriate misalignment capabilities to avoid premature wear and failures.
- Environmental Factors: Assess the environmental conditions, such as temperature, humidity, and presence of chemicals or contaminants, as these factors can impact the coupling’s material selection and performance.
- Service Factors: Some applications may have service factors that affect the required torque capacity. Apply service factors as needed to ensure the coupling can handle the application’s demands.
- Space Constraints: Consider the available space for the coupling. Ensure that the selected jaw coupling can fit within the given space constraints.
- Compliance with Standards: If applicable, verify that the chosen jaw coupling meets industry or application-specific standards and regulations.
By taking these factors into account, engineers and designers can determine the appropriate jaw coupling size that will provide reliable and efficient power transmission in the specific application.
editor by CX 2024-03-12