China Good quality CZPT Customized Jaw Shaft Coupling, Spline Shaft Coupling, Jaw Coupling for Plunger Pump

Product Description

Densen Customized Jaw shaft Coupling, Spline Shaft Coupling, Jaw coupling for plunger pump

 

Product Name Densen Customized Jaw shaft Coupling, Spline Shaft Coupling, Jaw coupling for plunger pump
DN mm 16~190mm
Rated Torque 40~25000 N·m
Allowable speed 4500~200 kN·m
Material 45#steel
Application Widely used in metallurgy, mining, engineering and other fields.

 

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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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jaw coupling

Installing and Aligning a Jaw Coupling for Optimal Performance

Proper installation and alignment of a jaw coupling are critical to ensure optimal performance, minimize wear, and prevent premature failure. Here are the steps to install and align a jaw coupling correctly:

  1. Inspect the Coupling: Before installation, inspect the coupling components for any damage or defects. Ensure that the elastomeric spider (flexible element) is in good condition and free from any debris.
  2. Prepare the Shaft Ends: Clean the shaft ends and remove any dirt, rust, or burrs. Make sure the shafts are smooth and free from contaminants that could affect the coupling’s grip.
  3. Insert the Spider: Place the elastomeric spider into the jaws of one coupling half. It’s crucial to ensure the spider is seated correctly and evenly distributed within the jaws.
  4. Align the Coupling Halves: Carefully align the two coupling halves, ensuring that the shaft ends are concentric and coaxial. Misalignment can lead to additional stresses and premature wear on the coupling.
  5. Tighten Fasteners: Insert the fasteners (usually set screws or clamping bolts) and tighten them evenly and sequentially. It’s essential to follow the manufacturer’s recommended torque values to avoid overtightening, which could damage the spider or cause stress on the shafts.
  6. Check Alignment: After tightening the fasteners, recheck the alignment of the coupling to ensure the shafts remain properly aligned. If necessary, make any adjustments to achieve accurate alignment.
  7. Lubrication: Some jaw couplings may require lubrication for smooth operation. Check the manufacturer’s guidelines for lubrication requirements and use the recommended lubricant.
  8. Run-In Period: After installation, it’s advisable to run the coupling at low speed and gradually increase the load to allow the spider to settle into its operating position. This run-in period helps ensure proper seating and further verifies alignment.

It’s essential to follow the manufacturer’s installation instructions and guidelines specific to the jaw coupling model being used. Proper installation and alignment will result in reliable and efficient power transmission, reduced maintenance costs, and extended coupling life.

jaw coupling

Can jaw couplings be used in applications with high shock and impact loads?

Yes, jaw couplings can be used in applications with high shock and impact loads, but their suitability depends on the specific design and construction of the coupling as well as the magnitude and frequency of the shock and impact loads. Jaw couplings are known for their ability to handle certain levels of shock and vibration due to the presence of the elastomer spider, which acts as a damping element to absorb and dissipate vibrations. However, there are some important considerations to take into account when using jaw couplings in high shock and impact load applications:

  1. Coupling Material: The choice of coupling material is crucial in applications with high shock and impact loads. Couplings made from robust materials, such as steel or alloy, provide better resistance to deformation and can handle higher impact forces compared to couplings made from less sturdy materials.
  2. Elastomer Spider: The elastomer spider is the central element of the jaw coupling and is responsible for absorbing shocks and vibrations. It is essential to select an elastomer spider with the appropriate hardness and resilience for the specific application. Harder elastomers can withstand higher loads but may transmit more vibration, while softer elastomers offer better shock absorption but have lower torque capacity. Choosing the right elastomer hardness is a trade-off between shock absorption and torque transmission requirements.
  3. Operating Conditions: Consider the operating conditions, such as the frequency and magnitude of shock and impact loads, when selecting a jaw coupling. For applications with intermittent or occasional shock loads, standard jaw couplings with moderate shock absorption capabilities may suffice. However, for continuous or severe shock loads, specialized high-torque jaw couplings with enhanced shock absorption properties might be more suitable.
  4. Regular Maintenance: In high shock and impact load applications, it is crucial to perform regular maintenance and inspections to identify any signs of wear, fatigue, or damage to the coupling components. Regular maintenance ensures that the coupling remains in good working condition and minimizes the risk of unexpected failures due to excessive loading.
  5. Consider Alternative Couplings: While jaw couplings can handle certain levels of shock and impact loads, some applications with exceptionally high loads may require more specialized couplings, such as grid couplings, gear couplings, or disc couplings. These couplings are designed explicitly for heavy-duty applications with high shock and impact loads and can offer superior performance and reliability under such conditions.

In conclusion, jaw couplings can be used in applications with high shock and impact loads, but the specific coupling design, material, elastomer hardness, and operating conditions must be carefully considered. Proper selection, installation, and maintenance of the coupling are essential to ensure reliable performance and longevity in challenging operating environments with significant shock and impact loads.

jaw coupling

Selecting the Appropriate Jaw Coupling Size

Choosing the right jaw coupling size for a specific application involves considering several factors:

  • Torque Requirements: Determine the maximum torque that the coupling will need to transmit in the application. Make sure to account for any peak or intermittent loads.
  • Shaft Diameter: Measure the diameter of the shafts to be connected. The coupling’s bore size should match the shaft diameter for proper fit and secure power transmission.
  • Speed: Consider the rotational speed of the application. High-speed applications may require special high-speed jaw couplings.
  • Misalignment Compensation: Evaluate the level of misalignment present in the system, including angular, parallel, and axial misalignment. Choose a jaw coupling with appropriate misalignment capabilities to avoid premature wear and failures.
  • Environmental Factors: Assess the environmental conditions, such as temperature, humidity, and presence of chemicals or contaminants, as these factors can impact the coupling’s material selection and performance.
  • Service Factors: Some applications may have service factors that affect the required torque capacity. Apply service factors as needed to ensure the coupling can handle the application’s demands.
  • Space Constraints: Consider the available space for the coupling. Ensure that the selected jaw coupling can fit within the given space constraints.
  • Compliance with Standards: If applicable, verify that the chosen jaw coupling meets industry or application-specific standards and regulations.

By taking these factors into account, engineers and designers can determine the appropriate jaw coupling size that will provide reliable and efficient power transmission in the specific application.

China Good quality CZPT Customized Jaw Shaft Coupling, Spline Shaft Coupling, Jaw Coupling for Plunger Pump  China Good quality CZPT Customized Jaw Shaft Coupling, Spline Shaft Coupling, Jaw Coupling for Plunger Pump
editor by CX 2023-10-08

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