Product Description

 

ISO 16571 – NWP4 Series Quick Coupling (steel)

 

Product Feature

1. Meet the standard ISO16571
2. Push and pull connection
3. With safe lock to avoid accidental disconnection
4. Standard material: Carbon steel
5. Standard seal: Nitrile rubber, fluoride rubber

Seal elastomer data
Seal	Maximum working temperature range
Nitrile rubber	-20ºC to +100ºC
Fluoride rubber	-25ºC to +150ºC

Product Parameter
 

Size (in)	ISO (mm)	Max Working Pressure (bar)	Rated Flow (l/m)	Min Blast Pressure (bar)			Fluid Loss (ml-cc)
		Connection		Connection	Male	Female
1/4	6.3	400	12	1900	1900	1900	0.008
3/8	10	350	23	1600	1560	1780	0.01
1/2	12.5	350	45	1770	1700	1590	0.012
3/4	20	350	74	1580	1660	1420	0.015
1	25	350	100	1840	1600	1470	0.02
1-1/4	31.5	350	189	1530	1470	1400	0.03
1-1/2	40	230	288	800	700	320	0.05
2	50	150	379	600	600	280	0.1

Application Range

Hydraulic & fluid delivery
Building equipment
Agriculture machine
Multi purpose vehicle
Road vehicle
Fixed hydraulic equipment & fluid transport in factory

Interchangeability

FASTER  2FFN/2FFI  series
PARKER  FEM  series
HANSEN  FF  series
AEROQUIP  FD89  series

Photo Details 

 

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What are the maintenance requirements for hydraulic couplings to ensure optimal performance?

Maintaining hydraulic couplings is crucial to ensure their optimal performance and extend their service life. Regular maintenance helps identify potential issues early on and prevents costly breakdowns. Here are the essential maintenance requirements for hydraulic couplings:

• Inspection: Regularly inspect the hydraulic coupling for signs of wear, damage, or leaks. Check for any unusual noises, vibrations, or changes in performance during operation.
• Lubrication: Ensure proper lubrication of the coupling’s moving parts. Use the manufacturer-recommended lubricants and follow the specified intervals for re-lubrication.
• Coupling Alignment: Check and correct the alignment of the driving and driven shafts connected by the coupling. Misalignment can lead to premature wear and reduce coupling efficiency.
• Bolt Tightening: Regularly check and tighten the bolts and fasteners securing the coupling. Loose bolts can lead to coupling slippage and compromised power transmission.
• Cleanliness: Keep the hydraulic coupling and its surrounding area clean from dirt, debris, and contaminants. Clean the coupling during scheduled maintenance to prevent contamination-related issues.
• Temperature and Pressure Checks: Monitor the operating temperature and pressure to ensure they remain within the specified limits for the coupling. Operating beyond the recommended ranges can cause damage and reduce coupling performance.
• Overload Prevention: Avoid exceeding the rated torque capacity of the coupling to prevent overload and potential damage to the coupling or connected equipment.
• Replacement of Worn Parts: Replace any worn or damaged components of the hydraulic coupling promptly. Follow the manufacturer’s guidelines for part replacement and use genuine spare parts when needed.
• Periodic Maintenance: Establish a regular maintenance schedule for the hydraulic coupling based on the operating conditions and manufacturer recommendations. Adhering to this schedule helps identify and address issues before they become severe.
• Expert Inspection: If you encounter any unusual performance issues or suspect coupling problems, consult a hydraulic system expert for a detailed inspection and analysis. They can provide valuable insights and recommendations for maintenance and repairs.

Proper and consistent maintenance of hydraulic couplings is essential to ensure their reliability, efficiency, and safe operation. By following the recommended maintenance practices, you can prolong the life of the hydraulic coupling and optimize the performance of your hydraulic system.

How do hydraulic couplings ensure efficient torque transmission and prevent fluid leaks?

Hydraulic couplings are designed with specific features to ensure efficient torque transmission and prevent fluid leaks, making them vital components in hydraulic systems. These features contribute to the overall performance and reliability of the hydraulic system. Here’s how hydraulic couplings achieve these goals:

• High-Quality Materials: Hydraulic couplings are manufactured using high-quality materials, such as steel, stainless steel, brass, or other durable alloys. These materials offer excellent strength and wear resistance, allowing the couplings to withstand high torque and pressure loads without deforming or leaking.
• Precision Machining: Hydraulic couplings undergo precise machining processes to achieve tight tolerances and smooth surfaces. This ensures proper alignment and mating of coupling components, minimizing energy losses and enhancing torque transmission efficiency.
• Sealing Mechanisms: Hydraulic couplings incorporate various sealing mechanisms to prevent fluid leaks. O-rings, seals, or face seals are common sealing methods used in hydraulic couplings. When the coupling components are connected, the seals create a secure barrier, preventing hydraulic fluid from escaping the system.
• Leak-Free Designs: Modern hydraulic couplings often feature leak-free designs that minimize the risk of fluid leakage during operation. These designs utilize advanced sealing technologies and tight tolerances to ensure a reliable and durable connection, even under high-pressure conditions.
• Threaded Connections: Many hydraulic couplings use threaded connections, such as NPT, BSP, JIC, or SAE threads, to create a secure and leak-resistant joint. Properly tightened threaded connections maintain the integrity of the hydraulic system, reducing the likelihood of leaks.
• Quick-Connect Couplings: Quick-connect hydraulic couplings are designed for rapid and easy connection and disconnection, often without the need for additional tools. These couplings use internal valves and seals to ensure a leak-free connection when engaged and prevent fluid leaks when disengaged.
• Hermetically Sealed Couplings: In specific applications, hermetically sealed hydraulic couplings use magnetic coupling technology to provide a non-contact, leak-free transmission of torque and power. These couplings have no physical contact points, making them suitable for critical environments or systems handling hazardous fluids.

The combination of these design features ensures that hydraulic couplings efficiently transmit torque from one component to another while maintaining a secure and reliable seal to prevent fluid leaks. This is particularly important in hydraulic systems, where fluid leakage can lead to reduced performance, increased maintenance, and potential safety hazards.

Proper selection, installation, and maintenance of hydraulic couplings are crucial to optimize their torque transmission capabilities and prevent fluid leaks. Regular inspections and replacement of worn-out seals or damaged couplings are essential to ensure the continued efficiency and safety of the hydraulic system.

In summary, hydraulic couplings play a crucial role in efficient torque transmission and fluid sealing in hydraulic systems. Their robust construction, precision engineering, and advanced sealing technologies contribute to the overall performance and reliability of hydraulic machinery and equipment.

What is a hydraulic coupling, and how does it function in fluid power transmission?

A hydraulic coupling is a mechanical device used in fluid power systems to transmit power from one shaft to another, often at different angles or distances. It facilitates the transfer of hydraulic energy from a prime mover, such as an electric motor or an internal combustion engine, to various hydraulic components, such as pumps, actuators, and cylinders.

The main function of a hydraulic coupling is to transmit rotational motion and power while accommodating misalignments and torsional vibrations. It acts as a link between the driving and driven shafts, ensuring that the hydraulic system operates smoothly and efficiently.

Hydraulic couplings operate based on the principle of hydraulic fluid transmission. The coupling consists of two main parts, the input (driving) and output (driven) elements, both of which have specially designed vanes or blades. These vanes are submerged in hydraulic fluid.

When the input element rotates, it creates a flow of hydraulic fluid around the vanes, which in turn generates pressure on the output element. The pressure difference between the two elements causes the output element to start rotating, effectively transmitting power from the input shaft to the output shaft.

Hydraulic couplings are advantageous in various applications due to their ability to:

1. Isolate Shock Loads: They can isolate and dampen shock loads and torsional vibrations, protecting sensitive components from sudden jolts and improving overall system performance.
2. Accommodate Misalignment: Hydraulic couplings can accommodate misalignment between the input and output shafts, reducing wear and tear on the system and extending the lifespan of the components.
3. Provide Overload Protection: They offer overload protection by slipping or disengaging when the torque exceeds a certain threshold, preventing damage to the system and its components.
4. Start-Up Assistance: Hydraulic couplings can provide smooth start-up assistance, gradually transmitting power as the fluid builds up pressure, minimizing shock and stress during system startup.
5. Reduce Noise and Vibration: By dampening vibrations and shock loads, hydraulic couplings contribute to quieter and smoother operation of fluid power systems.

Overall, hydraulic couplings play a critical role in fluid power transmission, ensuring efficient power transfer, protecting components from shocks and vibrations, and enhancing the overall performance and reliability of hydraulic systems in various industrial and mobile applications.

editor by CX 2024-02-17