China high quality Nm Pump Coupling Electric Motor Flexible Water Pump Couplings motor coupling

Product Description

Product Description

45# Forged Steel Nm Couplings

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.

The characteristics of the China Manufactory NM Spider Coupling:
1. It is small in size, light in quality, simple in structure, convenient in installation and low in price. It is often used in small power occasions.
2, the transmission torque is large, and in the same torque, most of the rotary diameter is smaller than the tooth coupling, and it can partly replace the tooth coupling.
3, the inertia force is small, it is suitable for 2 axis connection with little torque, high speed and no sharp impact. The transmission torque of nylon slider is small, but it is more suitable for high-speed operation without lubrication.

Product Parameters

Packaging & Shipping

Packing Details  : Plastic bag + paper box+wooden case + wooden pallet
Delivery Details  : 30-60 days after we received the payment.

Company Profile

About Mighty Machinery

ZheJiang Mighty Machinery Co., Ltd., specializes in manufacturing Mechanical Power Transmission Products. After over 13 years hard work, MIGHTY have already get the certificate of ISO9001:2000 and become a holding company for 3 manufacturing factories. 


MIGHTY advantage

1, Abundant experience  in the mechanical processing industries.

2,Large quality of various material purchase and stock in warhouse which ensure the low cost for the material and  production in time.

3,Now have 5 technical staff, we have strong capacity for design and process design, and more than 70 worker now work in our FTY and  double shift eveyday.

4,Strick quality control are apply in the whole prodution. we have incoming inspection,process inspection and final production inspection which can ensure the perfect of the goods quality.

5,Long time cooperate with the Global Buyer, make us easy to understand the csutomer and handle the export.


Q: Are you trading company or manufacturer ?A: We are a manufacturer. We provide professional custom service according to customers’ requirement.

Q: How long is your delivery time?A: It depends on the production processes, the production cycle would be 45-65 days.

Q: Do you provide samples ?A: Yes, we could provide the sample. Products developing fee can be charged. Sample fee can be refunded after products purchased.
Q: What is your terms of payment ?A: Payment =2000 USD, 30% T/T in advance , balance before shipment.

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motor coupling

Exploring the Use of Elastomeric Materials in Flexible Motor Couplings

Elastomeric materials play a crucial role in the design and function of flexible motor couplings. These materials offer unique properties that make them well-suited for power transmission applications. Here’s an exploration of their use in flexible motor couplings:

1. Flexibility and Damping:

Elastomeric materials, such as rubber or urethane, are highly flexible, allowing them to absorb and dampen vibrations and shocks generated during motor operation. This damping property helps reduce resonance and noise, improving the overall performance of the power transmission system.

2. Misalignment Compensation:

Flexible motor couplings with elastomeric inserts can accommodate both angular and parallel misalignments between the motor and driven equipment shafts. The elastomeric material provides some radial compliance, allowing for smooth torque transmission even when the shafts are slightly misaligned.

3. Shock Absorption:

In applications where the motor or driven equipment is subjected to sudden shocks or impacts, elastomeric materials act as shock absorbers. They absorb and dissipate the impact energy, protecting the coupling and connected components from damage.

4. Low Inertia:

Elastomeric couplings typically have low inertia due to the lightweight nature of the elastomeric material. This low inertia reduces the rotational resistance and allows for rapid acceleration and deceleration of the connected equipment.

5. Corrosion Resistance:

Elastomeric materials are often resistant to corrosion, making them suitable for use in various industrial environments where exposure to moisture or chemicals may occur.

6. Electrical Isolation:

Elastomeric couplings provide electrical isolation between the motor and driven equipment shafts. This is advantageous in applications where electrical continuity must be avoided.

7. Easy Installation:

Elastomeric couplings are generally easy to install due to their simple and lightweight construction. They do not require special tools or complex alignment procedures, making them a popular choice in many applications.

8. Maintenance-Free Operation:

Properly designed and maintained elastomeric couplings can offer maintenance-free operation over extended periods. The absence of mechanical wear elements reduces the need for regular maintenance and replacement.

The use of elastomeric materials in flexible motor couplings provides numerous benefits, making these couplings suitable for a wide range of applications. Their ability to compensate for misalignment, dampen vibrations, and withstand shocks makes them particularly advantageous in situations where smooth and reliable power transmission is essential.

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Temperature and Speed Limits for Different Motor Coupling Types

Motor couplings come in various types, and each type has its temperature and speed limits. These limits are essential considerations to ensure the coupling operates safely and efficiently. Here are the general temperature and speed limits for different motor coupling types:

1. Elastomeric Couplings:

Elastomeric couplings, such as jaw couplings and spider couplings, are commonly used in a wide range of applications. They typically have temperature limits of approximately -40°C to 100°C (-40°F to 212°F). The speed limits for elastomeric couplings typically range from 3,000 to 6,000 RPM, depending on the specific coupling design and size.

2. Gear Couplings:

Gear couplings are known for their high torque capacity and durability. The temperature limits for gear couplings are usually between -50°C to 150°C (-58°F to 302°F). The speed limits for gear couplings can be as high as 5,000 to 10,000 RPM or more, depending on the size and design.

3. Disc Couplings:

Disc couplings provide high torsional stiffness and are often used in precision applications. The temperature limits for disc couplings are typically around -40°C to 200°C (-40°F to 392°F). The speed limits for disc couplings can range from 5,000 to 20,000 RPM or more.

4. Grid Couplings:

Grid couplings are known for their shock absorption capabilities. The temperature limits for grid couplings are usually between -30°C to 100°C (-22°F to 212°F). The speed limits for grid couplings typically range from 3,600 to 5,000 RPM.

5. Oldham Couplings:

Oldham couplings are often used to transmit motion between shafts with significant misalignment. The temperature limits for Oldham couplings are generally around -30°C to 80°C (-22°F to 176°F). The speed limits for Oldham couplings are usually up to 3,000 to 5,000 RPM.

6. Diaphragm Couplings:

Diaphragm couplings are suitable for applications requiring high precision and torque transmission. The temperature limits for diaphragm couplings are typically between -50°C to 300°C (-58°F to 572°F). The speed limits for diaphragm couplings can be as high as 10,000 to 30,000 RPM.

It is essential to check the manufacturer’s specifications and recommendations for the specific coupling model to ensure the coupling operates within its intended temperature and speed limits. Operating the coupling beyond these limits may lead to premature wear, reduced performance, or even catastrophic failure. Properly selecting a coupling that matches the application’s temperature and speed requirements is critical for reliable and safe operation.

“`motor coupling

How to Diagnose and Fix Common Issues with Motor Couplings

Diagnosing and fixing common issues with motor couplings is essential to ensure optimal performance and prevent equipment failures. Here are steps to diagnose and address common coupling problems:

1. Visual Inspection:

Perform a visual inspection of the motor coupling regularly. Look for signs of wear, cracks, or any visible damage. Check for proper alignment and coupling installation.

2. Vibration Analysis:

Use vibration analysis to identify abnormal vibrations in the coupling or connected machinery. Excessive vibration can indicate misalignment, damaged coupling elements, or worn components.

3. Check for Misalignment:

Verify the alignment between the motor and driven equipment shafts. Misalignment can lead to coupling failure and increased stress on the machinery. Adjust the alignment if necessary.

4. Listen for Unusual Noises:

Listen for any unusual noises during motor operation, such as rattling or grinding sounds. Unusual noises may indicate a loose coupling or damaged components.

5. Inspect Coupling Fasteners:

Check the tightness of coupling fasteners, such as bolts or set screws. Loose fasteners can lead to misalignment and coupling slippage.

6. Lubrication:

If the coupling requires lubrication, ensure it is adequately lubricated. Lack of lubrication can cause increased friction and wear, leading to premature failure.

7. Replace Damaged Components:

If you find any signs of damage or wear during inspection, replace the damaged coupling elements promptly. This may include replacing elastomeric inserts, worn gear teeth, or other damaged parts.

8. Verify Torque Limiting (if applicable):

If the coupling has torque-limiting features, check that they are functioning correctly. These features protect the motor and equipment from overload situations.

9. Monitor Coupling Performance:

Regularly monitor the coupling’s performance to detect any changes or issues early on. Continuous monitoring can prevent more severe problems and reduce downtime.

10. Seek Professional Help:

If you are unsure about diagnosing or fixing a coupling issue, consider seeking assistance from a qualified technician or engineer.

By conducting regular inspections and addressing any problems promptly, you can extend the lifespan of the motor coupling and maintain the efficiency and reliability of the entire power transmission system.

China high quality Nm Pump Coupling Electric Motor Flexible Water Pump Couplings   motor couplingChina high quality Nm Pump Coupling Electric Motor Flexible Water Pump Couplings   motor coupling
editor by CX 2024-04-03

motor coupling

As one of leading motor coupling manufacturers, suppliers and exporters of mechanical products, We offer motor coupling and many other products.

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