China Custom FCL Flexible Shaft Couplings for Reducer and Motor muff coupling

Product Description

SC Transmission FCL Flexible Shaft Couplings for Reducer and Motor


Product Description

FCL Coupling/Shaft Coupling /Pin & Bush Coupling /FCL Flexible Coupling/NBK FCL Coupling is widely used for its compacts designing, easy installation, convenient maintenance, small and light weight. 

As long as the relative displacement between shafts is kept within the specified tolerance, couplings will operate the best function and have a longer working life.

Thus it is greatly demanded in medium and minor power transmission systems driven by motors, such as speed reducers, hoists, compressors, conveyors, spinning and weaving machines and ball mills.

Product Parameters

SIZE     D D1 d1 L C n-M kg
FCL90 4 4000 90 35.5 11 28 3 4-M8 1.7
FCL100 10 4000 100 40 11 35.5 3 4-M10 2.3
FCL112 16 4000 112 45 13 40 3 4-M10 2.8
FCL125 25 4000 125 65 50 13 45 3 4-M12 4
FCL140 50 4000 140 71 63 13 50 3 6-M12 5.4
FCL160 110 4000 160 80 15 56 3 8-M12 8
FCL180 157 3500 180 90 15 63 3 8-M12 10.5
FCL200 245 3200 200 100 21 71 4 8-M20 16.2
FCL224 392 2850 224 112 21 80 4 8-M20 21.3
FCL250 618 2550 250 125 25 90 4 8-M24 31.6
FCL280 980 2300 280 140 34 100 4 8-M24 44
FCL315 1568 2050 315 160 41 112 4 10-M24 57.7
FCL355 2450 1800 355 180 60 125 5 8-M30 89.5
FCL400 3920 1600 400 200 60 125 5 10-M30 113
FCL450 6174 1400 450 224 65 140 5 12-M30 145
FCL560 9800 1150 560 250 85 160 5 14-M30 229
FCL630 15680 1000 630 280 95 180 5 18-M30 296



Company Profile



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muff coupling

How does misalignment affect the performance and reliability of muff couplings?

Misalignment in muff couplings can have significant negative effects on their performance and overall reliability. Misalignment occurs when the connected shafts are not perfectly aligned, causing angular, parallel, or axial deviations. Here’s how misalignment impacts muff coupling performance:

  • Reduced Torque Transmission: Misalignment increases stress concentrations in the muff coupling, reducing its ability to transmit torque efficiently. This can lead to premature wear, deformation, or failure of the coupling.
  • Increased Wear and Fatigue: Misalignment causes uneven loading on the coupling’s components, leading to accelerated wear and fatigue. This can result in shortened muff coupling lifespan and frequent maintenance requirements.
  • Vibration and Noise: Misalignment generates vibrations and noise due to uneven forces acting on the muff coupling. These vibrations can affect nearby components and machinery, leading to increased wear and decreased overall system efficiency.
  • Shaft and Bearing Damage: Misalignment places additional loads on connected shafts and bearings. This can lead to premature wear and failure of these components, further affecting the machinery’s reliability and performance.
  • Loss of Efficiency: Misaligned muff couplings experience higher friction and energy losses, reducing the overall efficiency of the machinery. This can lead to increased energy consumption and decreased productivity.
  • Unpredictable Operation: Misalignment can cause unpredictable behavior in machinery, leading to unexpected shutdowns, downtime, and disruptions in production processes.

To maintain the performance and reliability of muff couplings, it’s crucial to minimize misalignment. Proper installation, alignment, and regular maintenance are essential. Laser alignment tools, precision measurements, and professional expertise can help ensure that muff couplings are aligned within acceptable tolerances, preserving their efficiency and longevity.

muff coupling

Can a muff coupling withstand high levels of torque and rotational forces?

Yes, muff couplings are designed to withstand a range of torque levels and rotational forces, making them suitable for various industrial applications. The ability of a muff coupling to withstand high levels of torque and rotational forces depends on factors such as its material, design, and size.

Muff couplings made from strong and durable materials, such as cast iron, steel, or stainless steel, are capable of handling higher torque levels. These materials have high tensile strength and resistance to wear, which allows them to transmit torque effectively without experiencing deformation or failure.

The design of the muff coupling, including its dimensions and keyway specifications, also plays a crucial role in determining its torque-handling capacity. Proper sizing and dimensioning ensure that the muff coupling can safely transmit the required torque without exceeding its limits.

In addition, the muff coupling’s size and diameter impact its torque capacity. Larger muff couplings with larger shaft diameters can generally handle higher torque loads compared to smaller ones.

It’s important to consult the manufacturer’s specifications and guidelines when selecting a muff coupling for an application with high torque and rotational forces. By choosing the appropriate material, design, and size, engineers can ensure that the muff coupling can effectively withstand and transmit high levels of torque while maintaining reliable and efficient machinery operation.

muff coupling

What is a muff coupling and how does it work in mechanical systems?

A muff coupling is a type of rigid coupling used to connect two shafts in mechanical systems. It consists of two cylindrical sleeves, or “muffs,” that are fitted over the shaft ends and connected using keys or other fastening methods. The primary purpose of a muff coupling is to transmit torque from one shaft to another while maintaining precise alignment and stability.

Here’s how a muff coupling works in mechanical systems:

  • Components: A muff coupling typically consists of two identical sleeves with internal cylindrical bores. These sleeves are designed to fit over the shaft ends to be connected.
  • Alignment: The shafts to be connected are aligned in a coaxial manner. The muffs are then slid onto the shaft ends with the bores aligned with the shafts.
  • Connection: Once the muffs are in position on the shaft ends, they are brought together to form a coupling. The connection can be achieved using keys, pins, or other fasteners that fit into corresponding keyways or slots on the muff and shaft. This connection ensures that torque is transmitted between the shafts.
  • Fastening: The fasteners prevent relative axial movement between the muffs and the shafts, maintaining the alignment and ensuring that the torque is effectively transmitted without slippage.
  • Torque Transmission: When torque is applied to one shaft, it is transmitted through the muff coupling to the other shaft. The rigid connection provided by the muff coupling ensures efficient torque transfer without significant deformation or flexibility.
  • Stability and Alignment: Muff couplings provide high torsional rigidity and excellent alignment accuracy. They are well-suited for applications where precise shaft alignment is crucial to avoid vibrations, wear, and premature failure.
  • Advantages: Muff couplings are simple, reliable, and easy to install. They are suitable for transmitting high torques in applications where flexibility and misalignment compensation are not required.

Muff couplings are commonly used in various industrial applications, including heavy machinery, power transmission systems, pumps, and equipment that requires accurate torque transmission and alignment. They are a preferred choice when the connected shafts need to maintain fixed alignment and operate at a consistent speed.

While muff couplings offer robust torque transmission and alignment benefits, it’s essential to carefully consider the application’s requirements and ensure proper installation to achieve optimal performance and reliability.

China Custom FCL Flexible Shaft Couplings for Reducer and Motor   muff couplingChina Custom FCL Flexible Shaft Couplings for Reducer and Motor   muff coupling
editor by CX 2024-04-24

Muff coupling

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

Please contact us for details.

Mail: [email protected]

Manufacturer supplier exporter of muff coupling.

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