Product Description

Densen customized SWC-BF Type universal coupling shaft coupling,universal couplings joint

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Product Name	Densen customized SWC-BF Type universal coupling shaft coupling,universal couplings joint
DN mm	160~640mm
Axis Angle	25/15°
Rated Torque	16~1250 N·m
Fatigue torque	8~630N·m
Material	35CrMo
Application	Widely used in metallurgy, mining, engineering and other fields.

 

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Equipment

 

Application Case

Typical case of diaphragm coupling applied to variable frequency speed control equipment

JMB type coupling is applied to HangZhou Oilfield Thermal Power Plant

According to the requirements of HangZhou Electric Power Corporation, HangZhou Oilfield Thermal Power Plant should dynamically adjust the power generation according to the load of the power grid and market demand, and carry out the transformation of the frequency converter and the suction fan. The motor was originally a 1600KW, 730RPM non-frequency variable speed motor matched by HangZhou Motor Factory. The speed control mode after changing the frequency is manual control. Press the button speed to increase 10RPM or drop 10RPM. The coupling is still the original elastic decoupling coupling, and the elastic de-coupling coupling after frequency conversion is frequently damaged, which directly affects the normal power generation.

It is found through analysis that in the process of frequency conversion speed regulation, the pin of the coupling can not bear the inertia of the speed regulation process (the diameter of the fan impeller is 3.3 meters) and is cut off, which has great damage to the motor and the fan.

Later, they switched to the JMB460 double-diaphragm wheel-type coupling of our factory (patent number: ZL.99246247.9). After 1 hour of destructive experiment and more than 1 year of operation test, the equipment is running very well, and there is no Replace the diaphragm. 12 units have been rebuilt and the operation is in good condition.

 

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Best Practices for Lubricating and Maintaining Cardan Couplings

Proper lubrication and maintenance are crucial for ensuring the reliable and efficient performance of cardan couplings. Here are some best practices to follow:

• Lubrication: Use a high-quality lubricant recommended by the manufacturer. Regularly lubricate the universal joints and other moving parts to reduce friction, wear, and heat generation.
• Inspection: Periodically inspect the coupling for signs of wear, corrosion, or damage. Check for loose bolts, misalignment, or any abnormalities that could affect performance.
• Alignment: Maintain proper alignment and phasing of the universal joints. Incorrect alignment can lead to premature wear and vibrations.
• Torque Specifications: Follow the manufacturer’s torque specifications when tightening bolts and fasteners. Over-tightening or under-tightening can lead to issues.
• Cleanliness: Keep the coupling and surrounding area clean from debris, dirt, and contaminants that could affect the coupling’s operation.
• Temperature: Be mindful of the operating temperature of the coupling. Extreme temperatures can affect the lubricant’s properties and cause premature wear.
• Regular Maintenance: Implement a regular maintenance schedule that includes lubrication, inspection, and any necessary adjustments. This helps identify and address issues before they escalate.
• Replacement Parts: When replacing components, use genuine parts from the manufacturer to ensure compatibility and performance.
• Training: Ensure that personnel responsible for maintaining the coupling are trained in proper procedures to avoid mistakes and ensure safety.

By following these best practices, you can extend the lifespan of your cardan couplings, maintain efficient power transmission, and minimize downtime due to unexpected failures.

Materials Used in Manufacturing Cardan Couplings

Cardan couplings, also known as universal joints or u-joints, are crucial components in mechanical systems that transmit torque and accommodate angular misalignment. These couplings are manufactured using a variety of materials to ensure durability, reliability, and performance. Common materials used in the manufacturing of cardan couplings include:

1. Steel: Steel is a widely used material due to its high strength, durability, and resistance to wear and corrosion. Alloy steels are often chosen for their enhanced mechanical properties and fatigue resistance.

2. Cast Iron: Cast iron is used in some cardan couplings, especially in older or heavier-duty applications. It provides good strength and vibration dampening properties.

3. Aluminum: Aluminum is chosen for its lightweight properties, making it suitable for applications where weight reduction is important. It is commonly used in industries such as automotive and aerospace.

4. Stainless Steel: Stainless steel is used when corrosion resistance is a critical factor. It is commonly employed in environments where the coupling may be exposed to moisture or corrosive substances.

5. Bronze: Bronze can be used in certain applications where self-lubricating properties are desired. It also provides good wear resistance.

6. Synthetic Polymers: Some modern cardan couplings use synthetic polymers or plastics in their construction to reduce weight and provide specific performance characteristics, such as dampening vibrations.

The choice of material depends on factors like the application requirements, operational conditions, torque transmission, operating speed, and environmental factors. Manufacturers select materials that offer the best combination of strength, durability, wear resistance, and corrosion resistance for the specific use case of the cardan coupling.

What is a cardan coupling and how is it used in mechanical systems?

A cardan coupling, also known as a universal joint or U-joint coupling, is a mechanical component used to transmit torque between two shafts that are not in alignment but intersect at an angle. It consists of a cross-shaped yoke with two perpendicular shafts connected at its ends, allowing the transmission of rotational motion even when the shafts are at different angles to each other. Cardan couplings are widely used in mechanical systems to transmit torque and motion where angular misalignment is present.

Here’s how a cardan coupling works and how it is used in mechanical systems:

• Angular Misalignment: Cardan couplings are designed to accommodate angular misalignment between shafts. They can transmit torque between shafts that are at an angle to each other, typically up to 45 degrees. This ability to handle misalignment makes them suitable for various applications.
• Components: A cardan coupling consists of a cross-shaped yoke with four arms, two of which are connected to the input and output shafts. The two remaining arms are connected to each other through a bearing, which allows for the rotational motion.
• Transmitting Torque: As one shaft rotates, it imparts angular motion to the yoke. This angular motion is transferred to the other shaft through the bearing, allowing torque to be transmitted even when the shafts are not collinear.
• Application: Cardan couplings are used in various applications, including automotive drivetrains, industrial machinery, agricultural equipment, and even in some aerospace systems. They are often found in places where it’s necessary to transmit torque between non-parallel shafts while allowing for some degree of flexibility.
• Advantages: Cardan couplings are simple in design, relatively compact, and provide a cost-effective solution for transmitting torque in cases of angular misalignment. They are also capable of transmitting high torques while compensating for misalignment.
• Limitations: Cardan couplings have limitations in terms of the angle they can handle, and at extreme angles, they may produce uneven torque output due to their design. They can also introduce some degree of vibration and require periodic maintenance.

In mechanical systems, cardan couplings are used in various applications where the alignment between shafts cannot be maintained, such as in vehicles with independent suspension systems, industrial machinery with non-parallel shafts, and applications where flexibility and torque transmission are required despite angular misalignment.

editor by CX 2023-12-19