Product Description

SDSX Grooved Rigid Coupling

Systems & Performance

SDSX Grooved mechanical couplings(GMC) are available in both rigid and flexible models.

A rigid coupling is used in applications where a rigid joint is desired,similar to that of a traditional flanged,welded ,or threaded connection.

To be considered rigid,a coupling would allow less than 1 degree of deflection or angular movement

 

Description

SDSX rigid coupling is designed from 1"-12", and pressure is 300psi/2070 kPa.

Bolts/Nuts: Heat-treated plated carbon steel, meeting its mechanical properties Grade 8.8.

Gaskets: EPDM, silicon rubber and Nitrile rubber.

Dimensions
 

Nominal Size mm/in	Pipe O.D mm/in	Working Pressure PSI/MPa	Bolt Size	Dimensions mm/in
			No.-Size   mm	Ø	L	H
25 1	33.7 1.327	300 2.07	2-3/8*45	60    2.362	102  4.016	45  1.772
32 1¼	42.4 1.669	300 2.07	2-3/8*45	70  2.756	106  4.173	44  1.732
40 1½	48.3 1.900	300 2.07	2-3/8*45	73  2.874	108  4.252	44  1.732
50 2	57.0 2.245	300 2.07	2-3/8*55	83 3.268	122  4.803	45  1.772
50 2	60.3 2.375	300 2.07	2-3/8*55	87 3.425	123  4.843	44  1.732
65 2½	73.0 2.875	300 2.07	2-3/8*55	100  3.937	138  5.433	44  1.732
65 2½	76.1 3.000	300 2.07	2-3/8*55	103  4.055	142  5.591	45  1.772
80 3	88.9 3.500	300 2.07	2- 1/2*60	117  4.606	166  6.535	45  1.772
100 4	108.0 4.250	300 2.07	2- 1/2*65	137  5.393	188  7.401	48  1.889
100 4	114.3 4.500	300 2.07	2- 1/2*65	139  5.472	190  7.480	49  1.929
125 5	133.0 5.250	300 2.07	2- 1/2*75	163  6.417	210  8.268	49  1.929
125 5	139.7 5.500	300 2.07	2- 1/2*75	168  6.614	218  8.583	49  1.929
150 6	159.0 6.250	300 2.07	2- 1/2*75	192  7.559	242  9.528	49  1.929
150 6	165.1 6.500	300 2.07	2- 1/2*75	193  7.598	241  9.488	49  1.929
150 6	168.3 6.625	300 2.07	2- 1/2*75	198.5  7.815	249  9.803	50 1.969
200 8	219.1 8.625	300 2.07	2-5/8*85	253  9.961	320  12.598	59 2.323
250 10	273 10.748	300 2.07	2-7/8*130	335  13.189	426  16.772	68 2.677
300 12	323.9 12.752	300 2.07	2-7/8*130	380  14.96	470  18.504	65 2.559

Material Specification

Housing: Ductile iron conforming to ASTM A-536, grade 65-45-12.

Housing Coating: Paint red and orange

• Optional: Hot dipped galvanized, electro galvanized.

Gaskets

 

• EPDM: Temperature range -34ºC to +150ºC. Recommended for hot water service within

the specified temperature range plus a variety of dilute acids,oil-free air and many chemical services.
 

NOT RECOMMENDED FOR PETROLEUM SERVICES.

 

• Silicon Rubber: Temperature range -40ºC to +177ºC. Recommended for drinking water,

hot water, high-temperature air and some high-temperature chemicals.

NOT RECOMMENDED FOR PETROLEUM SERVICES.

 

• Nitrile Rubber: Temperature range -29ºC to +82ºC. Recommended for petroleum products,

air with oil vapors, vegetable and mineral oils within the specified temperature range.

NOT RECOMMENDED FOR HOT WATER

SERVICES OVER +150°F/+66ºC OR FOR HOT

DRY AIR OVER +140°F/+60ºC.

Installation

Certification

Showroom

Application

Package and shipment

Production and quality control

 

How do you install and align a flexible coupling properly to ensure optimal performance?

Proper installation and alignment of a flexible coupling are essential to ensure its optimal performance and longevity. Incorrect installation can lead to premature wear, increased vibrations, and potential equipment failure. Below are the steps to install and align a flexible coupling properly:

1. Pre-Installation Inspection:

Before installation, inspect the flexible coupling and its components for any visible damage or defects. Check that the coupling's size and specifications match the application requirements. Ensure that the shafts and equipment connected to the coupling are clean and free from debris.

2. Shaft Preparation:

Prepare the shafts by removing any oil, grease, or contaminants from the surfaces that will come into contact with the coupling. Ensure that the shaft ends are smooth and free from burrs that could affect the fit of the coupling.

3. Coupling Hub Installation:

Slide the coupling hubs onto the shafts, ensuring they are positioned securely and evenly on each shaft. Use a lubricant recommended by the manufacturer to facilitate the installation and ensure a proper fit.

4. Alignment:

Proper alignment is critical for the performance and longevity of the flexible coupling. Align the shafts by checking both angular and parallel misalignment. Utilize precision alignment tools, such as dial indicators or laser alignment systems, to achieve accurate alignment. Follow the manufacturer's alignment specifications and tolerance limits.

5. Tightening Fasteners:

Once the shafts are properly aligned, tighten the coupling's fasteners to the manufacturer's recommended torque values. Gradually tighten the fasteners in a cross pattern to ensure even distribution of the load on the coupling hubs. Avoid over-tightening, as it may cause distortion or damage to the coupling.

6. Run-Out Check:

After installation, perform a run-out check to verify that the coupling's rotating components are balanced and aligned. Excessive run-out can lead to vibrations and reduce the coupling's performance. If significant run-out is detected, recheck the alignment and address any issues that may be causing it.

7. Lubrication:

Ensure that the flexible coupling is adequately lubricated, following the manufacturer's recommendations. Proper lubrication reduces friction and wear, enhancing the coupling's efficiency and reliability.

8. Periodic Inspection and Maintenance:

Regularly inspect the flexible coupling for signs of wear, misalignment, or damage. Address any issues promptly to prevent further problems. Depending on the coupling type and application, scheduled maintenance may include re-greasing, re-alignment, or replacing worn components.

Summary:

Proper installation and alignment are crucial for ensuring the optimal performance and longevity of a flexible coupling. Following the manufacturer's guidelines, inspecting the components, achieving accurate alignment, and using the appropriate lubrication are key steps in the installation process. Regular inspection and maintenance help to identify and address potential issues, ensuring the coupling continues to operate smoothly and efficiently in the mechanical system.

Can flexible couplings be used in high-temperature environments, such as furnaces and kilns?

Flexible couplings can be used in high-temperature environments, such as furnaces and kilns, but the selection of the appropriate coupling is crucial to ensure reliable performance and longevity under these extreme conditions. Here are some key considerations:

• Material Selection: The choice of materials is critical when using flexible couplings in high-temperature applications. Look for couplings made from heat-resistant materials that can withstand the elevated temperatures without experiencing significant degradation. Common materials used for high-temperature couplings include stainless steel, high-temperature alloys, and certain types of elastomers designed for heat resistance.
• Lubrication: High temperatures can cause lubricants to break down or evaporate more quickly. Some flexible couplings may require specialized high-temperature lubricants to ensure smooth operation and reduce wear at elevated temperatures. Check the manufacturer's recommendations for lubrication in high-temperature environments.
• Thermal Expansion: In high-temperature applications, the equipment and shafts may experience thermal expansion, leading to misalignment. Flexible couplings with higher misalignment capabilities may be necessary to accommodate these thermal effects and prevent additional stress on the system.
• Torsional Stiffness: Consider the required torsional stiffness for the specific application. In high-temperature environments, couplings may experience changes in stiffness due to temperature variations. It is essential to choose a coupling with appropriate torsional characteristics for the intended operating temperature range.
• Application Specifics: Evaluate the specific operating conditions of the furnace or kiln, including the maximum and fluctuating temperatures, vibration levels, and potential exposure to chemicals or other harsh elements. Choose a coupling that can withstand these conditions without compromising performance or safety.
• Coupling Type: Different types of flexible couplings offer varying degrees of heat resistance and performance capabilities. For example, certain types of disc couplings or metal bellows couplings are more suitable for high-temperature environments due to their robust construction and resistance to heat.
• Regular Maintenance: In high-temperature applications, couplings may be subject to more stress and wear. Regular inspection and maintenance are essential to monitor the coupling's condition, lubrication, and alignment to ensure it continues to function optimally in the challenging environment.

Overall, flexible couplings can be utilized in high-temperature environments, but it is vital to choose a coupling specifically designed and rated for these conditions. Working closely with coupling manufacturers and considering the specific demands of the application will help ensure that the selected coupling can handle the challenges posed by furnaces, kilns, and other high-temperature equipment, providing reliable power transmission and contributing to the overall efficiency and safety of the system.

How do you select the appropriate flexible coupling for a specific application?

Choosing the right flexible coupling for a specific application requires careful consideration of various factors to ensure optimal performance, reliability, and longevity. Here are the key steps to select the appropriate flexible coupling:

1. Application Requirements: Understand the specific requirements of the application, including torque and speed specifications, misalignment conditions, operating environment (e.g., temperature, humidity, and presence of corrosive substances), and space limitations.
2. Torque Capacity: Determine the maximum torque that the coupling needs to transmit. Choose a flexible coupling with a torque rating that exceeds the application's requirements to ensure a safety margin and prevent premature failure.
3. Misalignment Compensation: Consider the type and magnitude of misalignment that the coupling needs to accommodate. Different coupling designs offer varying degrees of misalignment compensation. Select a coupling that can handle the expected misalignment in the system.
4. Vibration Damping: If the application involves significant vibrations, choose a flexible coupling with good damping properties to reduce vibration transmission to connected equipment and improve system stability.
5. Environmental Factors: Take into account the environmental conditions in which the coupling will operate. For harsh environments, consider couplings made from corrosion-resistant materials.
6. Torsional Stiffness: Depending on the application's requirements, decide on the desired torsional stiffness of the coupling. Some applications may require high torsional stiffness for precise motion control, while others may benefit from a more flexible coupling for shock absorption.
7. Cost and Life-Cycle Considerations: Evaluate the overall cost-effectiveness of the coupling over its expected life cycle. Consider factors such as initial cost, maintenance requirements, and potential downtime costs associated with coupling replacement.
8. Manufacturer Recommendations: Consult coupling manufacturers and their technical specifications to ensure the selected coupling is suitable for the intended application.
9. Installation and Maintenance: Ensure that the selected flexible coupling is compatible with the equipment and shaft sizes. Follow the manufacturer's installation guidelines and recommended maintenance practices to maximize the coupling's performance and longevity.

By following these steps and carefully evaluating the application's requirements, you can select the most appropriate flexible coupling for your specific needs. The right coupling choice will lead to improved system performance, reduced wear on equipment, and enhanced overall reliability in various mechanical systems and rotating machinery.

editor by CX 2023-10-11