Product Description
Ductile Iron Nor-Mex Couplings Size 50/67/82/97/112/128/148/168/194/214/240/265/295/330/370/415/480/575
Product Description
NM flexible shaft coupling is a cylindrical pin made of some non-metallic materials, which is placed between the 2 sides of the coupling and the inner surface of the outer ring, and a device to transfer the torque through the column pin to realize the connection between 2 half couplings.
NM flexible shaft coupling between the slider made of bakelite cloth or polyurethane, suitable for high speed, large torque, no sharp impact of the 2 connections. The maximum allowable torque is 850N m, and the maximum shaft diameter is 50mm.
Parameter
| Name of transmission part | water pump coupling |
| Series of Normex couplings | NM 50, NM 67, NM 82, NM 97, NM 112, NM 128, NM 148, NM 168, NM 194, NM 214, NM 240, NM 265, NM 295, NM 330, NM 370, NM 415, NM 480, NM 575. |
| Material | cast iron GG25 |
| Bore type | pilot bore, finished bore |
| Surface finish | phosphate coated. |
| Product structure |
it is composed of 2 cast iron claws and a natural rubber inner ring |
| Suitable shaft diameter | 7mm-75mm |
| Suitable motor power | within 60hp / 45KW |
Product features:
1. The maximum torque is 125kgm
2. Stable operation and low noise
3. The product is made of cast iron and cast by precision die casting, so it is not easy to cause fracture during operation
OUR COMPANY
ZheJiang Mighty Machinery Co., Ltd. specializes in offering best service and the most competitive price for our customer.
After over 10 years’ hard work, MIGHTY’s business has grown rapidly and become an important partner for oversea clients in the industrial field and become a holding company for 3 manufacturing factories.
MIGHTY’s products have obtained reputation of domestic and oversea customers with taking advantage of technology, management, quality and very competitive price.
Your satisfaction is the biggest motivation for our work, choose us to get high quality products and best service.
OUR FACTORY
Main Products:
Timing belt pulleys, timing bars, timing belt clamping plates.
Locking elements and shrink discs: could be alternative for Ringfeder, Sati, Chiaravalli, BEA, KBK, Tollok, etc.
V belt pulleys and taper lock bush.
Sprockets, idler, and plate wheels.
Gears and racks: spur gear, helical gear, bevel gear, worm gear, gear rack.
Shaft couplings: miniature coupling, curved tooth coupling, chain coupling, HRC coupling, normex coupling, FCL coupling, GE coupling, rigid and flexible coupling, jaw coupling, disc coupling, multi-beam coupling, universal joint, torque limiter, shaft collars.
Forging, Casting, Stamping Parts.
Other customized power transmission products and Machining Parts (OEM).
Application
1. Engineering: machine tools, foundry equipments, conveyors, compressors, painting systems, etc.
2. Pharmaceuticals& Food Processing: pulp mill blowers, conveyor in warehouse, agitators, grain, boiler, bakery machine, labeling machine, robots, etc.
3. Agriculture Industries: cultivator, rice winnower tractor, harvester, rice planter, farm equipment, etc.
4. Texitile Mills: looms, spinning, wrappers, high-speed auto looms, processing machine, twister, carding machine, ruler calendar machine, high speed winder, etc.
5. Printing Machinery: newspaper press, rotary machine, screen printer machine, linotype machine offset printer, etc.
6. Paper Industries: chipper roll grinder, cut off saw, edgers, flotation cell and chips saws, etc.
7. Building Construction Machinery: buffers, elevator floor polisher mixing machine, vibrator, hoists, crusher, etc.
8. Office Equipments: typewriter, plotters, camera, money drive, money sorting machine, data storage equipment, etc.
9. Glass and Plastic Industries: conveyor, carton sealers, grinders, creeper paper manufacturing machine, lintec backing, etc.
10. Home Appliances: vacuum cleaner, laundry machine, icecream machine, sewing machine, kitchen equipments, etc.
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us as below:
Contacts
We warmly welcome friends from domestic and abroad come to us for business negotiation and cooperation for mutual benefit. To supply customers excellent quality products with good price and punctual delivery time is our responsibility.
Any question or inquiry, pls contact us without hesitate, we assure any of your inquiry will get our prompt attention and reply!
Tina Shaw
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| Standard Or Nonstandard: | Standard |
|---|---|
| Shaft Hole: | 50-218 mm |
| Torque: | 2.7-300 N.M |
| Bore Diameter: | 7-95 mm |
| Speed: | 3000-12500 Rpm |
| Structure: | Jaw / Spider |
| Samples: |
US$ 0.1/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
How do flexible couplings compare to other types of couplings in terms of performance?
Flexible couplings offer distinct advantages and disadvantages compared to other types of couplings, making them suitable for specific applications. Here is a comparison of flexible couplings with other commonly used coupling types in terms of performance:
- Rigid Couplings:
Rigid couplings are simple in design and provide a solid connection between two shafts, allowing for precise torque transmission. They do not offer any flexibility and are unable to compensate for misalignment. As a result, rigid couplings require accurate shaft alignment during installation, and any misalignment can lead to premature wear and increased stress on connected equipment. Rigid couplings are best suited for applications where shaft alignment is precise, and misalignment is minimal, such as in well-aligned systems with short shaft spans.
- Flexible Couplings:
Flexible couplings, as discussed previously, excel at compensating for misalignment between shafts. They offer angular, parallel, and axial misalignment compensation, reducing stress on connected components and ensuring smooth power transmission. Flexible couplings are versatile and can handle various applications, from light-duty to heavy-duty, where misalignment, vibration damping, or shock absorption is a concern. They provide a cost-effective solution for many industrial, automotive, and machinery applications.
- Oldham Couplings:
Oldham couplings are effective at compensating for angular misalignment while maintaining constant velocity transmission. They offer low backlash and electrical isolation between shafts, making them suitable for precision motion control and applications where electrical interference must be minimized. However, Oldham couplings have limited capacity to handle parallel or axial misalignment, and they may not be suitable for applications with high torque requirements.
- Gear Couplings:
Gear couplings are robust and can handle high torque levels, making them suitable for heavy-duty applications such as mining and steel mills. They offer good misalignment compensation and have a compact design. However, gear couplings are relatively more expensive and complex than some other coupling types, and they may generate more noise during operation.
- Disc Couplings:
Disc couplings provide excellent misalignment compensation, including angular, parallel, and axial misalignment. They have high torsional stiffness, making them ideal for applications where accurate torque transmission is critical. Disc couplings offer low inertia and are suitable for high-speed applications. However, they may be more sensitive to shaft misalignment during installation, requiring precise alignment for optimal performance.
- Conclusion:
The choice of coupling type depends on the specific requirements of the application. Flexible couplings excel in compensating for misalignment and vibration damping, making them versatile and cost-effective solutions for many applications. However, in situations where high torque, precision, or specific electrical isolation is necessary, other coupling types such as gear couplings, disc couplings, or Oldham couplings may be more suitable. Proper selection, installation, and maintenance of the coupling are essential to ensure optimal performance and reliability in any mechanical system.
What are the factors to consider when choosing a flexible coupling for a specific system?
Choosing the right flexible coupling for a specific system requires careful consideration of several factors. The following are the key factors that should be taken into account:
- 1. Misalignment Requirements: Assess the type and magnitude of misalignment expected in the system. Different couplings are designed to handle specific types of misalignment, such as angular, parallel, or axial misalignment. Choose a coupling that can accommodate the expected misalignment to prevent premature wear and failure.
- 2. Torque Capacity: Determine the required torque capacity of the coupling to ensure it can transmit the necessary power between the shafts. Consider both the continuous and peak torque loads that the system may experience.
- 3. Operating Speed: Take into account the rotational speed of the system. High-speed applications may require couplings that can handle the additional centrifugal forces and balance requirements.
- 4. Temperature Range: Consider the operating temperature range of the system. Select a coupling material that can withstand the temperatures encountered without losing its mechanical properties.
- 5. Environment and Conditions: Evaluate the environmental conditions where the coupling will be used, such as exposure to moisture, chemicals, dust, or corrosive substances. Choose a coupling material that is compatible with the operating environment.
- 6. Space Constraints: Assess the available space for the coupling installation. Some couplings have compact designs suitable for applications with limited space.
- 7. Installation and Maintenance: Consider the ease of installation and maintenance. Some couplings may require special tools or disassembly for maintenance, while others offer quick and simple installation.
- 8. Torsional Stiffness: Evaluate the torsional stiffness of the coupling. A balance between flexibility and stiffness is essential to prevent excessive torsional vibrations while accommodating misalignment.
- 9. Shock and Vibration Damping: For applications with high shock loads or vibration, select a coupling with excellent damping characteristics to protect the system from excessive forces.
- 10. Cost and Budget: Compare the cost of the coupling with the overall budget for the system. Consider the long-term cost implications, including maintenance and replacement expenses.
Ultimately, the choice of a flexible coupling should align with the specific requirements and operating conditions of the system. Consulting with coupling manufacturers or engineering experts can provide valuable insights to ensure the optimal selection of a coupling that enhances system performance, reliability, and efficiency.
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:
- 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.
- 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.
- 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.
- 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.
- Environmental Factors: Take into account the environmental conditions in which the coupling will operate. For harsh environments, consider couplings made from corrosion-resistant materials.
- 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.
- 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.
- Manufacturer Recommendations: Consult coupling manufacturers and their technical specifications to ensure the selected coupling is suitable for the intended application.
- 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 2024-03-10