Productbeschrijving
Productbeschrijving
NM coupling extensively used in compressors, diesel engine drives, pumps, conveyors, and many other drive units.
NM coupling consists of 2 hubs and flexible ring able to compensate all type of shaft misalignments.The flexible rings are made of Nitile rubber(NBR) which have a high internal damping characteristic which enable to absorb and dampen torsional vibrations,operate effectively in temperature range of -40~+100.
NM coupling characteristics:Quiet and smooth operation.Easy installation and maintenance free. Available to machine with high torque and intermittent operation.
1. Material: Cast iron, Rubber.
2. OEM and ODM are available
3. High efficient in transmission
4. Finishing: Painted.
5. High quality with competitive price
6. Different models suitable for your different demands
7. Stock for different bore size on both sides available.
8. Application in wide range of environment.
9. Quick and easy mounting and disassembly.
10. Resistant to oil and electrical insulation.
11. Identical clockwise and anticlockwise rotational characteristics.
12. Small dimension, low weight, high transmitted torque.
13. It has good performance on compensating the misalignment.
14.Coupling Type :NM50,NM67, NM82, NM97, NM12, NM128, NM148,NM168, NM194, NM214
Gedetailleerde foto's
Toepassingen
NM couplings are offered in the industry’s largest variety of stock bore/keyway combinations. These couplings require no lubrication and provide highly reliable service for light, medium, and heavy duty electrical motor and internal combustion power transmission applications. Applications include power transmission to industrial equipment such as pumps, gear boxes, compressors, blowers, mixers, and conveyors.
Productparameters
Verpakking en verzending
| Pakket | Standaardverpakking / Pallet of container. Plastic zak in exportdoos, blisterverpakking en tape-and-reel verpakking beschikbaar. Indien klanten specifieke wensen hebben met betrekking tot de verpakking, zullen wij daar graag aan voldoen. |
| Verzenden |
10-20working days ofter payment receipt comfirmed (based on actual quantity). Professional goods shipping forward. |
Bedrijfsprofiel
| Standaard of niet-standaard: | Standaard |
|---|---|
| Schachtgat: | Standard or Customized |
| Boringdiameter: | Standard or Customized |
| Structuur: | Flexibele |
| Materiaal: | Gietijzer |
| Type: | Elastic Coupling |
| Voorbeelden: |
US$ 0/Piece
1 stuk (minimale bestelling) | |
|---|
| Aanpassing: |
Beschikbaar
| Aanvraag op maat |
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Hoe beschermt een flexibele koppeling aangesloten apparatuur tegen schokbelastingen en trillingen?
Flexibele koppelingen spelen een cruciale rol bij de bescherming van aangesloten apparatuur tegen schokbelastingen en trillingen door demping en isolatie te bieden. Wanneer machines of mechanische systemen plotselinge schokbelastingen of trillingen ondervinden, fungeert de flexibele koppeling als buffer, absorbeert en verspreidt de impact, waardoor de overgedragen krachten worden verminderd en de apparatuur wordt beschermd. Hieronder leggen we uit hoe flexibele koppelingen dit bereiken:
- Demping van trillingen: Flexibele koppelingen worden vaak gemaakt van materialen met dempende eigenschappen. Wanneer trillingen via de assen worden overgebracht, kan het materiaal van de flexibele koppeling een deel van de trillingsenergie absorberen en omzetten in warmte. Deze energieafvoer helpt de amplitude van de trillingen te verminderen en voorkomt dat ze zich verder verspreiden naar de aangesloten apparatuur.
- Trillingsisolatie: Naast het dempen van trillingen bieden flexibele koppelingen ook een zekere mate van trillingsisolatie. Ze zijn ontworpen om de twee assen te ontkoppelen, wat betekent dat trillingen op de ene as niet direct worden doorgegeven aan de andere as. Dit isolerende effect voorkomt dat trillingen zich door het hele systeem verspreiden en minimaliseert de impact op gevoelige apparatuur of nabijgelegen componenten.
- Schokdemping: Wanneer de aangesloten machine plotselinge schokbelastingen ondervindt, bijvoorbeeld tijdens het opstarten of bij abrupte veranderingen in de belasting, kan de flexibele koppeling als schokdemper fungeren. Dankzij het ontwerp van de koppeling vervormt deze lichtjes onder de impact, waardoor de schokenergie wordt geabsorbeerd en verdeeld. Dit voorkomt dat de schok direct wordt overgedragen op de aangesloten apparatuur, waardoor het risico op schade of voortijdige slijtage wordt verminderd.
- Compensatie voor verkeerde uitlijning: Flexibele koppelingen kunnen uitlijningsfouten tussen de assen compenseren. Uitlijningsfouten kunnen leiden tot extra spanningen en trillingen in het systeem. Door een zekere mate van hoek-, parallelle en axiale uitlijningsfout toe te staan, vermindert de flexibele koppeling de krachten die worden overgebracht op de aangesloten apparatuur en de ondersteunende constructies.
- Vermindering van resonantie-effecten: Resonantie is een fenomeen dat optreedt wanneer de eigenfrequentie van een systeem overeenkomt met de frequentie van externe trillingen, wat leidt tot versterkte trillingen. Flexibele koppelingen kunnen resonantie-effecten helpen voorkomen door de eigenfrequentie van het systeem te veranderen en een zekere mate van flexibiliteit te bieden die de resonantierespons dempt.
Door een flexibele koppeling in de aandrijflijn of het krachtoverbrengingssysteem te integreren, kunnen fabrikanten en gebruikers van machines de betrouwbaarheid en levensduur van de aangesloten apparatuur aanzienlijk verbeteren. Het vermogen van de koppeling om trillingen te dempen, schokken te isoleren en uitlijningsfouten te compenseren, draagt bij aan een soepelere en stabielere werking, waardoor de onderhoudsbehoefte afneemt en de algehele systeemprestaties verbeteren.
Samenvattend fungeren flexibele koppelingen als beschermende elementen die aangesloten apparatuur afschermen tegen schokbelastingen en trillingen. Hun vermogen om trillingen te dempen, schokken te isoleren en uitlijningsfouten te compenseren, draagt bij aan een soepelere en betrouwbaardere werking van diverse mechanische systemen.
What role does a flexible coupling play in reducing downtime and maintenance costs?
A flexible coupling plays a significant role in reducing downtime and maintenance costs in industrial machinery and rotating equipment. Here are the key ways in which flexible couplings contribute to these benefits:
- Compensatie voor verkeerde uitlijning: One of the primary functions of a flexible coupling is to accommodate misalignment between two connected shafts. Misalignment can occur due to various factors such as thermal expansion, foundation settling, or manufacturing tolerances. By allowing for misalignment, flexible couplings reduce the transmission of harmful forces and stresses to connected components, minimizing wear and preventing premature failures that could lead to costly downtime and repairs.
- Trillingsdemping: Flexible couplings have inherent damping properties due to the elastomeric or flexible elements they incorporate. These elements absorb and dissipate vibration and shock loads that may arise from the operation of rotating machinery. By dampening vibrations, flexible couplings protect the connected equipment from excessive wear and fatigue, extending their service life and reducing the need for frequent maintenance or replacement.
- Schokbelastingabsorptie: In applications where sudden loads or shocks are common, such as in heavy machinery or high-speed equipment, flexible couplings act as shock absorbers. They can absorb and dissipate the impact energy, preventing damage to the machinery and minimizing downtime caused by unexpected failures or breakdowns.
- Easy Installation and Alignment: Flexible couplings are designed for ease of installation and alignment. Unlike rigid couplings that require precise shaft alignment, flexible couplings can tolerate some degree of misalignment during installation. This feature simplifies the setup process, reduces installation time, and lowers the risk of misalignment-related issues, ultimately minimizing downtime during initial installation or replacement of couplings.
- Reduced Maintenance Frequency: The ability of flexible couplings to handle misalignment and dampen vibrations results in reduced wear on bearings, seals, and other connected components. Consequently, the frequency of maintenance intervals can be extended, reducing the need for frequent inspections and component replacements. This directly translates to lower maintenance costs and less downtime for maintenance tasks.
- Equipment Protection: By reducing the transmission of shock loads and vibrations, flexible couplings act as protective barriers for connected equipment. They help prevent catastrophic failures and subsequent damage to expensive machinery, avoiding unplanned shutdowns and costly repairs.
Overall, flexible couplings are critical components that improve the reliability and longevity of rotating equipment. Their ability to handle misalignment, dampen vibrations, and protect against shock loads contributes to reduced downtime, lower maintenance costs, and increased productivity in industrial applications.
Are there any limitations or disadvantages of using flexible couplings?
While flexible couplings offer numerous advantages, they do come with some limitations and disadvantages that should be considered when selecting them for specific applications. Here are some of the common limitations and disadvantages of using flexible couplings:
- Torsional Stiffness: Flexible couplings provide some level of torsional flexibility, which is advantageous in many applications. However, in systems that require high precision and minimal angular deflection, the inherent flexibility of the coupling may not be suitable. In such cases, a rigid coupling may be more appropriate.
- Limitation in High-Torque Applications: While some flexible couplings can handle moderate to high torque levels, they may not be as well-suited for extremely high-torque applications. In such cases, specialized couplings, such as gear couplings, may be required to handle the high torque demands.
- Temperature Limitations: The performance of certain flexible coupling materials, especially elastomers and plastics, may be affected by extreme temperature conditions. High temperatures can lead to premature wear and reduced lifespan of the coupling, while low temperatures may result in reduced flexibility and potential brittleness.
- Chemical Compatibility: Certain flexible coupling materials may not be compatible with certain chemicals or substances present in the application’s environment. Exposure to chemicals can cause degradation or corrosion of the coupling material, affecting its performance and lifespan.
- Installation and Alignment: Flexible couplings require proper installation and alignment to function effectively. If not installed correctly, misalignment issues may persist, leading to premature wear and reduced performance. Aligning the shafts accurately can be time-consuming and may require specialized equipment and expertise.
- Cost: In some cases, flexible couplings may be more expensive than rigid couplings due to their more complex design and use of specialized materials. However, the cost difference is often justified by the benefits they offer in terms of misalignment compensation and vibration damping.
- Service Life: The service life of a flexible coupling can vary depending on the application’s conditions and the quality of the coupling. Regular maintenance and timely replacement of worn or damaged parts are essential to ensure the coupling’s longevity and prevent unexpected failures.
Despite these limitations, flexible couplings remain highly valuable components in a wide range of applications, providing efficient torque transmission and compensating for misalignment. Proper selection, installation, and maintenance can help mitigate many of the disadvantages associated with flexible couplings, ensuring their reliable and long-lasting performance in various mechanical systems.
editor by CX 2023-08-22
