Product Description

Nylon Sleeve Gear Coupling
 
Curved-tooth Coupling / Coupling BoWex
 Ubet Nylon Sleeve Couplings flexible shaft connections for a positive torque transmission and specifically suitable to compensate for axial, radial and angular shaft misalignment .

Ubet Nylon Sleeve Couplings are compact and require no lubrication.  They are adapted to many applications including vertical and blind installations. They operate over a wide range of temperature at speed up to 5,000 RPM. This type of coupling is widely used in application such as Motor, Generator and Pump etc.
 
Features:
l  Nylon-steel combined, maintenance free
l  Compensation for axial, radial and angular misalignment
l  Convenient axial plugging assembly
l  Without bolts, pins, flanges to affect balance or safety
l  No requirement of lubrication
l  Excellent electrical insulation
l  Can be vertically or horizontally assembled
l  Tolerance of finished bore in appliance with ISOH7
 

l  tem No.	l  Item No.	l  Finished bore range	l  Outside Diameter	l  Nominal Torque Nm
l  UTNL-14	l  UTNL-14-L	l  6-14	l  40	l  10
l  UTNL-19	l  UTNL-19-L	l  8-19	l  48	l  16
l  UTNL-24	l  UTNL-24-L	l  10-24	l  52	l  20
l  UTNL-28	l  UTNL-28-L	l  10-28	l  66	l  45
l  UTNL-32	l  UTNL-32-L	l  12-32	l  76	l  60
l  UTNL-38	l  UTNL-38-L	l  14-38	l  83	l  80
l  UTNL-42	l  UTNL-42-L	l  20-42	l  95	l  100
l  UTNL-48	l  UTNL-48-L	l  20-48	l  114	l  140
l  UTNL-55	l  UTNL-55-L	l  25-55	l  132	l  240
l  UTNL-65	l  UTNL-65-L	l  25-65	l  175	l  380

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How do Sleeve Couplings Contribute to Reducing Vibrations and Noise in Rotating Equipment?

Sleeve couplings play a significant role in reducing vibrations and noise in rotating equipment. Their design and material properties contribute to damping vibrations and absorbing shocks, resulting in smoother and quieter operation. Here’s how sleeve couplings achieve this:

1. Flexibility and Misalignment Compensation:

Sleeve couplings have a certain degree of flexibility, which allows them to accommodate small misalignments between the connected shafts. When the shafts are misaligned, the sleeve coupling can flex and adjust, reducing the transmission of vibrations from one shaft to the other. By compensating for misalignments, sleeve couplings minimize the generation of vibrations and the resulting noise.

2. Shock Absorption:

During sudden starts, stops, or changes in load, rotating equipment can experience shocks and impact loads. Sleeve couplings have some level of shock absorption capability, which helps dampen the effects of these shocks. By absorbing shocks, sleeve couplings prevent the transmission of high-frequency vibrations and noise to the rest of the system, resulting in a quieter operation.

3. Resilient Material Selection:

The choice of materials used in sleeve couplings also contributes to vibration and noise reduction. Certain materials, such as rubber or elastomers, are known for their damping properties. These materials can be incorporated into the design of sleeve couplings to absorb and dissipate vibrations, effectively reducing noise levels in the system.

4. Uniform Torque Transmission:

Sleeve couplings provide uniform torque transmission between the connected shafts. This balanced torque transmission minimizes torsional vibrations, which can lead to noise generation in the system. By maintaining a smooth torque transfer, sleeve couplings help achieve quieter and more stable operation.

5. Proper Installation and Maintenance:

Proper installation and regular maintenance of sleeve couplings are essential for their optimal performance in reducing vibrations and noise. Ensuring that the coupling is correctly aligned and well-lubricated can further enhance its ability to dampen vibrations and minimize noise levels.

In summary, sleeve couplings contribute to reducing vibrations and noise in rotating equipment by providing flexibility to accommodate misalignments, absorbing shocks, using resilient materials, and ensuring uniform torque transmission. Their ability to mitigate vibrations and noise enhances the overall performance and reliability of the rotating equipment, making them a preferred choice in various industrial applications.

What are the Standard Sizes and Dimensions Available for Sleeve Couplings?

Sleeve couplings are available in a wide range of standard sizes and dimensions to accommodate various shaft diameters and application requirements. The dimensions of sleeve couplings depend on factors such as the shaft size, coupling length, and overall design. Here are some common standard sizes and dimensions for sleeve couplings:

Shaft Sizes: Sleeve couplings are typically designed to fit specific shaft diameters, commonly ranging from a few millimeters to several inches. Standard sizes may include shaft diameters of 6 mm, 8 mm, 10 mm, 12 mm, 15 mm, 20 mm, 25 mm, 30 mm, 40 mm, 50 mm, and so on.

Coupling Length: The length of the coupling refers to the distance between the two ends that connect the shafts. The coupling length is usually determined by the application’s torque and space requirements.

Overall Diameter: The overall diameter of the sleeve coupling varies with the shaft size and coupling design. It is important to ensure that the overall diameter of the coupling fits within the available space and does not interfere with other components in the system.

Keyway Size: Some sleeve couplings feature keyways to provide additional torque transmission and anti-rotation capabilities. The keyway size should match the shaft’s keyway dimensions to ensure a secure connection.

Material Thickness: The thickness of the sleeve coupling’s material is critical for its strength and torque capacity. Standard sleeve couplings are available in various material thicknesses to suit different application requirements.

It’s important to note that while standard sizes and dimensions are readily available, custom sleeve couplings can also be designed and manufactured to meet specific application needs. Custom couplings may be required for non-standard shaft sizes, special torque capacities, or unique environmental conditions.

When selecting a sleeve coupling, engineers should consider the torque requirements, shaft sizes, space limitations, and environmental factors to ensure the coupling’s proper fit and reliable performance.

How do you Select the Appropriate Sleeve Coupling for Specific Shaft Connections?

Choosing the right sleeve coupling for specific shaft connections involves considering several critical factors to ensure optimal performance and reliability. Here’s a step-by-step guide to help you select the appropriate sleeve coupling:

1. Shaft Diameter and Size:

   Start by determining the diameters and sizes of the shafts that need to be connected. Measure the outer diameter of each shaft accurately, as this will determine the inner diameter of the sleeve coupling required.

2. Shaft Misalignment:

   Assess the level of misalignment between the shafts. If there is minimal misalignment, a standard sleeve coupling may be sufficient. For applications with angular misalignment, consider using a spacer sleeve coupling or a flanged sleeve coupling with improved alignment capabilities.

3. Torque Requirements:

   Determine the amount of torque that the coupling needs to transmit between the shafts. Ensure that the selected sleeve coupling can handle the torque requirements without exceeding its rated limits.

4. Operating Speed:

   Consider the speed at which the connected machinery operates. For high-speed applications, flanged sleeve couplings with enhanced radial stiffness are preferable to minimize vibration and ensure smooth operation.

5. Environmental Conditions:

   Evaluate the operating environment to identify potential challenges such as temperature extremes, exposure to chemicals, or the presence of dust or debris. Choose a sleeve coupling material that can withstand the specific environmental conditions and resist corrosion or wear.

6. Installation Space and Accessibility:

   Assess the installation space and accessibility around the shafts. If the installation space is limited or the shafts cannot be easily disconnected, consider using split sleeve couplings for easier maintenance and installation.

7. Cost and Budget:

   Take into account the budget and cost constraints for your project. While standard sleeve couplings are generally the most cost-effective option, investing in a higher-quality coupling may be beneficial for critical applications with specific requirements.

By carefully evaluating these factors, you can determine the appropriate sleeve coupling type and size that matches your specific shaft connections. It is crucial to consult with coupling manufacturers or suppliers to get expert advice and ensure that the selected coupling meets the performance requirements of your application. Proper coupling selection will lead to efficient power transmission, reduced maintenance, and prolonged equipment lifespan in your mechanical system.

editor by CX 2024-04-11