Product Description

flexible shaft jaw coupling for CNC machine aluminum motor coupler

Quick Details:
Structure: Jaw / Spider
Flexible or Rigid: Flexible
Standard or Nonstandard: Standard
Material: Aluminium
Brand Name: YD
Place of Origin: ZheJiang , China (Mainland)
Certificate: ISO9001:2008
Bore forming: Made by CNC centres
Unique Feature: Exquisite Workmanship
Bore Size: Meet inch dimension
Invertory: In stock
Spider color: Red (Green and Yellow selected)
Model Number:flexible shaft coupling for 3D printer
inner Bore Dmin: 3-14mm
Inner Bore Dmax: 10-45mm
Diameter: 30mm
Length: 20-114mm
Allowable speed: 15200min-1
Invertory: In stock

1. Light weight, smal  moment of inertia and high torque.
2. Getting  the drive vibration buffer, and absorbing the impact generated by motor’s uneven operation
3. Effectively correcting  the installation deviation of axial and radial and angular

Your kind response of below questions will help us to recommed the most suitable model to you asap.
1.Are you looking for JM type(setscrew) or JM-C type(clamp)?
2.What is coupling outer dimeter size?
3.What is coupling inner bore size and length?
4.What is coupling material(aluminium or Stainless steel )?




Inner Diameter Outer
Length Torque(N.M.)
D1 D2
Min. Max. Min. Max.
JM14 3 7 3 7 14 22 0.7
JM16 3 7 3 7 16 22 0.7
JM20 4 10 4 10 20 30 1.7
JM25 4 12 4 12 25 34 1.7
JM30 5 16 5 16 30 35 1.7
JM40 6 24 6 24 40 66 4.0
JM55 8 28 8 28 55 78 4.0
JM65 10 38 10 38 65 90 15.0
JM80 12 45 12 45 80 114 15.0
JM95 14 55 14 55 95 126 15.0
JM105 15 62 15 62 105 140 15.0
JM120 20 74 20 74 120 160 32.0
JM135 22 80 22 80 135 185 32.0

Packaging Details:
Wooden or ply cases for export standard or according to the customers
Delivery Detail:3-5 days after receiving the 30% deposit

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jaw coupling

Accommodating Variable Operating Conditions and Loads with Jaw Couplings

Jaw couplings are designed to accommodate variable operating conditions and loads, making them suitable for a wide range of applications. Here’s how jaw couplings achieve this:

  • Flexibility: The elastomeric spider (flexible element) in a jaw coupling provides flexibility, allowing for angular, parallel, and axial misalignment between the connected shafts. This flexibility helps to compensate for minor misalignments that may occur during operation or due to changes in operating conditions.
  • Shock Absorption: The elastomeric spider also acts as a shock absorber, dampening vibrations and reducing the impact of sudden loads or shocks. This feature is particularly beneficial in applications where the connected equipment may experience variable or unpredictable loads.
  • Torsional Stiffness Options: Jaw couplings are available in different torsional stiffness options, depending on the specific application requirements. Couplings with higher torsional stiffness are suitable for precision applications with minimal misalignment, while those with lower stiffness are ideal for applications with higher misalignment and shock absorption needs.
  • Material Selection: Jaw couplings can be manufactured from various materials, such as aluminum, steel, or stainless steel, to suit different environmental conditions and loads. Corrosion-resistant materials are available for harsh environments, ensuring the coupling’s performance remains unaffected by changing operating conditions.
  • Size and Torque Ratings: Jaw couplings are available in a wide range of sizes and torque ratings, allowing users to select the appropriate coupling based on the expected operating conditions and torque requirements of the application. It’s essential to choose a coupling size that comfortably handles the maximum expected load.
  • Interchangeability: Many jaw couplings are designed to be interchangeable with other manufacturers’ couplings of the same size and type. This feature provides flexibility in sourcing replacements and makes it easier to adapt the coupling to changing requirements or equipment configurations.

Overall, jaw couplings’ ability to handle variable operating conditions, misalignments, and loads makes them versatile and reliable components in a wide range of mechanical systems and applications.

jaw coupling

What are the factors influencing the thermal performance of a jaw coupling?

The thermal performance of a jaw coupling is influenced by several factors that affect its ability to dissipate heat and handle temperature fluctuations during operation. Here are the key factors that can impact the thermal performance of a jaw coupling:

  • Material Selection: The choice of materials used in the construction of the jaw coupling plays a significant role in its thermal performance. High-quality materials with good thermal conductivity can efficiently dissipate heat, reducing the risk of overheating and premature wear. Common materials used in jaw couplings include steel, aluminum, and various elastomers.
  • Elastomer Spider: The elastomer spider in the jaw coupling is a crucial component that can influence thermal performance. The type of elastomer and its specific characteristics, such as hardness and thermal conductivity, can affect the coupling’s ability to absorb and dissipate heat generated during operation.
  • Operating Speed: The rotational speed of the coupling impacts its thermal performance. Higher operating speeds can generate more heat due to increased friction and stress on the coupling components. It is essential to ensure that the jaw coupling is rated for the specific operating speed of the application to prevent overheating and premature failure.
  • Torque and Load: The torque and load applied to the jaw coupling can also influence its thermal performance. Higher torque and load levels can result in increased heat generation. Properly sizing the coupling based on the application’s torque and load requirements is essential to prevent excessive heat buildup.
  • Operating Environment: The environment in which the jaw coupling operates can impact its thermal performance. For example, if the coupling is located in an area with limited airflow or high ambient temperatures, it may experience reduced heat dissipation capabilities. On the other hand, an environment with good ventilation can help in maintaining the coupling’s thermal performance.
  • Lubrication: Some jaw couplings may require lubrication to reduce friction and heat generation. Proper lubrication can enhance the coupling’s thermal performance and extend its service life. It is essential to follow the manufacturer’s guidelines regarding the type and frequency of lubrication to ensure optimal performance.
  • Continuous vs. Intermittent Operation: The thermal performance of a jaw coupling can also be influenced by the nature of its operation—continuous or intermittent. Intermittent operation allows the coupling to cool down between cycles, reducing the overall heat buildup compared to continuous operation, which may lead to higher operating temperatures.

Overall, careful consideration of these factors is crucial in ensuring the efficient thermal performance of a jaw coupling. Proper selection, installation, and maintenance of the coupling based on the specific application requirements can help prevent overheating, reduce wear, and prolong the coupling’s lifespan.

jaw coupling

How Does a Jaw Coupling Protect Connected Equipment from Shock Loads and Vibrations?

Jaw couplings are designed to provide some level of flexibility, which allows them to absorb shock loads and dampen vibrations in mechanical systems. The unique design of jaw couplings contributes to their ability to protect connected equipment in the following ways:

  • Spider Element: The spider element, typically made of elastomeric material, serves as a mechanical fuse in the jaw coupling. When the system experiences shock loads or vibrations beyond the coupling’s rated capacity, the spider element can deform or fail in a controlled manner, protecting the connected components from damage.
  • Torsional Wind-Up: In the presence of torsional vibrations or sudden torque fluctuations, the elastomeric spider can act as a torsional buffer, absorbing and dissipating the energy to prevent it from reaching the connected equipment.
  • Misalignment Compensation: Jaw couplings can tolerate a degree of angular, parallel, and axial misalignment between the shafts. This capability helps minimize stress on the connected components in situations where misalignments might occur due to external forces or dynamic operating conditions.
  • Reduction of Resonance Effects: The flexibility of jaw couplings can help mitigate resonance effects that may arise in the system, reducing the risk of resonance-related failures or damages.

It’s important to note that while jaw couplings offer protection against certain shock loads and vibrations, they have their limits. Excessive or repetitive shocks, vibrations, or overloading beyond the coupling’s rated capacity can still lead to premature wear or failure. Therefore, it is essential to select the appropriate size and type of jaw coupling for the application and regularly inspect the coupling for signs of wear or damage. Regular maintenance and inspection help ensure the jaw coupling continues to provide reliable protection to the connected equipment.

China manufacturer Flexible Shaft Jaw Coupling for CNC Machine Aluminum Motor Coupler  China manufacturer Flexible Shaft Jaw Coupling for CNC Machine Aluminum Motor Coupler
editor by CX 2024-04-08