Product Description

Product Description

Flexible couplings are used to transmit torque from 1 shaft to another when the 2 shafts are slightly misaligned. It can accommodate varying degrees of misalignment up to 3°. In addition to allowing for misalignment, it can also be used for vibration damping or noise reduction.
Encoder couplings, flexible coupling, couplings working with Encoder & all kinds of motors (servo motor, DC motor, AC motor, gear motors).

MODEL	OD(mm)	Length(mm)	Bore range(mm)
JM14	14	22	3-7
JM14C	14	22	3-6
JM16	16	22	3-7
JM16C	16	22	3-7
JM20	20	30	4-10
JM20C	20	30	4-10
JM25	25	34	4-12
JM25C	25	34	4-12
JM30	30	35	5-16
JM30C	30	35	5-16
JM40	40	66	8-24
JM40C	40	66	8-24
JM55	55	78	10-28
JM55C	55	78	10-28
JM65	65	90	12-38
JM65C	65	90	12-38
JM80	80	114	16-45
JM80C	80	114	16-45
JM95	95	126	20-55
JM95C	95	126	20-55
JM105	105	140	20-62
JM105C	105	140	20-62
JM120	120	160	20-74
JM120C	120	160	20-74
JM135	135	185	22-80
JM135C	135	185	22-80
“C” means clamp type jaw coupling   Without “C” means setscrew type jaw coupling

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What materials are typically used in manufacturing spider couplings and why?

Spider couplings are constructed using a combination of materials to achieve durability, flexibility, and efficient torque transmission. The choice of materials depends on factors such as application requirements, environmental conditions, and the desired balance between strength and flexibility. Common materials used in manufacturing spider couplings include:

• Aluminum: Aluminum is lightweight and corrosion-resistant, making it suitable for applications where weight reduction is important. It offers good mechanical properties and can be used in various industries.
• Steel: Steel provides excellent strength and durability. It’s often used in heavy-duty applications where high torque transmission is required. Surface treatments can enhance corrosion resistance.
• Stainless Steel: Stainless steel offers corrosion resistance in aggressive environments. It’s commonly used in industries such as food processing, pharmaceuticals, and chemical processing.
• Cast Iron: Cast iron is known for its high compressive strength and wear resistance. It’s suitable for applications requiring robust construction and can handle high torque loads.
• Plastic/Polymer: Certain polymers and plastics, such as polyurethane or nylon, are used for the elastomeric spider element. These materials provide flexibility, vibration dampening, and misalignment compensation.

The choice of materials depends on the specific requirements of the application. For example, aluminum or stainless steel may be chosen for industries requiring corrosion resistance, while steel or cast iron may be selected for heavy-duty applications. The elastomeric spider is typically made from a durable polymer to ensure flexibility and effective torque transmission while accommodating misalignment. Overall, selecting the right materials ensures that spider couplings can withstand the demands of the intended application and provide reliable performance over their lifespan.

What are the symptoms of spider coupling wear or deterioration, and how can they be identified?

Spider couplings, like other mechanical components, can experience wear and deterioration over time due to factors such as torque, misalignment, and environmental conditions. Identifying the symptoms of wear is crucial for maintaining coupling performance and preventing unexpected failures. Here are some common symptoms of spider coupling wear and deterioration:

• Vibration and Noise: Increased vibration or unusual noise during operation can indicate wear in the spider coupling. Excessive wear can lead to reduced dampening of vibrations and increased noise levels.
• Reduced Torque Transmission: If the coupling is no longer transmitting torque efficiently, it may indicate wear or damage to the elastomeric spider. Reduced torque transmission can result in decreased equipment performance.
• Visible Cracks or Tears: Inspect the elastomeric spider for visible cracks, tears, or signs of deformation. These issues can lead to uneven load distribution and compromised coupling function.
• Uneven Shaft Movement: Misalignment caused by wear can lead to uneven movement of connected shafts. This can be observed through irregular motion or wobbling during operation.
• Increased Heat Generation: If the coupling is generating more heat than usual, it may indicate excessive friction due to wear. Overheating can accelerate wear and affect coupling performance.
• Irregular Performance: If machinery or equipment connected by the coupling experiences irregular or unpredictable behavior, it could be a sign of coupling wear affecting torque transmission.

To identify these symptoms, regular visual inspections, vibration analysis, and performance monitoring are recommended. If any of these symptoms are observed, it’s advisable to replace the worn or damaged spider coupling with a new one. Routine maintenance and timely replacement can help ensure the continued reliability and performance of spider couplings in mechanical systems.

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

A spider coupling, also known as a jaw coupling or elastomeric coupling, is a type of flexible coupling used to connect two shafts while accommodating misalignment and transmitting torque between them. It consists of three main components: two hubs and an elastomeric spider or insert that fits between them.

The elastomeric spider is typically made of a flexible and durable material, such as rubber or polyurethane, with a series of lobes or fins that fit into matching grooves on the inner surfaces of the hubs. These lobes allow the spider to flex and absorb misalignments between the connected shafts while transmitting torque.

The spider coupling is used in mechanical systems to:

• Transmit Torque: The primary function of a spider coupling is to transmit torque from one shaft to another. As the shafts rotate, the elastomeric spider deforms slightly, allowing the hubs to move relative to each other while maintaining torque transmission.
• Accommodate Misalignment: Spider couplings can accommodate different types of misalignment, including angular, axial, and parallel misalignments, without causing excessive stress on the connected components. This flexibility helps prevent premature wear and failure.
• Dampen Vibrations: The elastomeric material of the spider acts as a shock absorber, dampening vibrations and reducing the transmission of vibrations between the connected shafts. This can improve overall system performance and reduce wear on components.
• Isolate Shock Loads: In applications with sudden changes in torque or shock loads, the spider coupling can absorb and dampen these shocks, protecting the connected components from damage.
• Reduce Maintenance: Spider couplings require minimal maintenance due to their simple design and absence of lubrication points. This can lead to reduced downtime and maintenance costs in industrial machinery.
• Provide Electric Insulation: Spider couplings can provide electrical isolation between the connected shafts, making them suitable for applications where electrical grounding needs to be minimized.

Spider couplings are commonly used in various machinery and equipment, such as pumps, compressors, conveyors, fans, and industrial machinery. They are particularly well-suited for applications that require flexibility, misalignment compensation, vibration reduction, and ease of maintenance.

editor by CX 2023-08-17