Product Description
SDSX Grooved Rigid Coupling
System s & 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
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What are the maintenance-free options available for flexible couplings?
Several maintenance-free options are available for flexible couplings, designed to reduce or eliminate the need for regular maintenance and lubrication. These options offer long-lasting performance and reliability while minimizing downtime and operational costs. Below are some maintenance-free options for flexible couplings:
1. Maintenance-Free Elastomeric Couplings: Elastomeric couplings with a specific design and materials can be maintenance-free. These couplings often incorporate high-quality elastomeric elements that do not require periodic lubrication. The elastomeric material provides damping of shocks and vibrations and allows for misalignment compensation, making them suitable for various applications without the need for regular maintenance.
2. Non-Lubricated Metallic Couplings: Some metallic couplings are designed to operate without the need for lubrication. These couplings use self-lubricating materials or specialized coatings that reduce friction between moving parts, eliminating the need for manual lubrication. They can handle high torque and speed requirements while providing reliable performance over extended periods without maintenance.
3. Pre-Lubricated Couplings: Certain flexible couplings come pre-lubricated during manufacturing. These couplings have grease or lubricant already applied to the critical components, providing sufficient lubrication for an extended period of operation. As a result, users do not need to perform regular lubrication maintenance, reducing maintenance tasks and associated costs.
4. Sealed Couplings: Some flexible couplings are designed with integrated seals or shields that protect internal components from contaminants and prevent lubricant leakage. These sealed couplings are inherently maintenance-free, as they ensure long-lasting performance without the need for external maintenance or re-lubrication.
5. Non-Wearing Materials: Certain flexible couplings are constructed using non-wearing materials, such as high-performance polymers. These materials offer excellent resistance to wear and abrasion, reducing the need for maintenance and replacement due to wear-related issues.
6. Torque-Responsive Couplings: Some maintenance-free couplings are designed to disengage or slip when the torque exceeds a certain threshold. This feature protects the connected equipment from excessive loads, preventing damage and reducing the need for maintenance or repairs caused by overload conditions.
Summary: Maintenance-free options for flexible couplings are available, offering reliable and long-lasting performance without the need for regular maintenance and lubrication. These couplings utilize specialized materials, designs, and features to handle various operating conditions while minimizing downtime and operational costs. Selecting a maintenance-free coupling that suits the specific application requirements can significantly improve the overall efficiency and reliability of the mechanical system.
How does a flexible coupling handle alignment issues in long-distance shaft connections?
In long-distance shaft connections, it is common to encounter alignment issues due to factors such as thermal expansion, foundation settlement, or machinery shifts. Flexible couplings play a crucial role in handling these alignment issues and ensuring efficient power transmission. Here’s how they achieve this:
- Misalignment Compensation: Flexible couplings are designed to accommodate both angular and parallel misalignments between shafts. When the shafts are not perfectly aligned, the flexibility of the coupling allows it to bend or flex, reducing the transmission of misalignment forces to connected equipment.
- Reduced Stress on Equipment: By absorbing and compensating for misalignment, flexible couplings reduce the stress and loads imposed on connected machinery. This feature is particularly important in long-distance shaft connections, where misalignment can be more pronounced.
- Torsional Flexibility: In addition to angular and parallel misalignments, long-distance shaft connections may also experience torsional misalignment. Flexible couplings can handle torsional flexibility, allowing smooth torque transmission even if the connected shafts have slightly different rotational speeds.
- Vibration Damping: Long-distance shaft connections can be susceptible to vibrations due to the extended span and potential resonance. Flexible couplings help dampen these vibrations, protecting the connected equipment from excessive wear and fatigue.
- Resilience to Shock Loads: Long-distance shaft connections in industrial settings may experience shock loads due to sudden starts, stops, or equipment malfunctions. Flexible couplings can absorb and dissipate some of these shock loads, safeguarding the connected components.
- Longevity: By mitigating the effects of misalignment, vibrations, and shock loads, flexible couplings contribute to the longevity of the connected equipment and reduce maintenance and replacement costs over time.
When selecting a flexible coupling for long-distance shaft connections, it is essential to consider factors such as the degree of misalignment, torque requirements, operating conditions, and the environment in which the coupling will be used. Regular inspection and maintenance of the flexible coupling can further enhance its performance and ensure reliable operation in long-distance shaft connections.
Can flexible couplings be used in corrosive or harsh environments?
Yes, flexible couplings can be designed and selected to be used in corrosive or harsh environments. The choice of materials and coatings plays a crucial role in ensuring the coupling’s durability and performance under challenging conditions.
Corrosion-Resistant Materials:
In corrosive environments, it is essential to use materials that can withstand chemical attacks and oxidation. Stainless steel, specifically grades like 316 or 17-4 PH, is commonly chosen for flexible couplings in such situations. Stainless steel offers excellent corrosion resistance, making it suitable for applications where the coupling may come into contact with corrosive substances or moisture.
Special Coatings:
For certain harsh environments, coupling manufacturers may apply special coatings to enhance the coupling’s corrosion resistance. Examples of coatings include zinc plating, nickel plating, or epoxy coatings. These coatings provide an additional layer of protection against corrosive agents and help extend the coupling’s lifespan.
Sealed Designs:
In environments where the coupling is exposed to contaminants like dust, dirt, or moisture, sealed designs are preferred. Sealed flexible couplings prevent these substances from entering the coupling’s internal components, thus reducing the risk of corrosion and wear. The sealed design also helps to maintain the coupling’s performance over time in challenging conditions.
High-Temperature Applications:
For harsh environments with high temperatures, flexible couplings made from high-temperature resistant materials, such as certain heat-resistant stainless steels or superalloys, can be used. These materials retain their mechanical properties and corrosion resistance even at elevated temperatures.
Chemical Resistance:
For applications where the coupling might encounter chemicals or solvents, it is essential to select a coupling material that is chemically resistant. This prevents degradation and ensures the coupling’s integrity in such environments.
Specialized Designs:
In some cases, where the environment is exceptionally harsh or unique, custom-designed flexible couplings may be necessary. Engineering a coupling to meet the specific demands of the environment ensures optimal performance and reliability.
Consultation with Manufacturers:
When considering flexible couplings for corrosive or harsh environments, it is advisable to consult with coupling manufacturers or engineering experts. They can provide valuable insights and recommend suitable materials, coatings, and designs based on the specific operating conditions.
Summary:
Flexible couplings can indeed be used in corrosive or harsh environments, provided the appropriate materials, coatings, and designs are chosen. Stainless steel, sealed designs, and special coatings are some of the solutions that enhance the coupling’s corrosion resistance and performance. It is essential to consider the specific environment and application requirements when selecting a flexible coupling to ensure optimal functionality and durability in challenging conditions.
editor by CX 2024-02-24