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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Exploring the Use of Elastomeric Materials in Flexible Shaft Couplings

Elastomeric materials play a crucial role in the design and function of flexible shaft couplings. These materials, commonly known as elastomers, are rubber-like substances that exhibit high elasticity and flexibility. They are widely used in various types of flexible couplings due to their unique properties and benefits:

1. Damping and Vibration Absorption:

Elastomeric materials have excellent damping characteristics, meaning they can absorb and dissipate vibrations and shocks. This property is particularly useful in applications where vibration control is essential to protect sensitive equipment and improve overall system performance.

2. Misalignment Compensation:

Flexible shaft couplings with elastomeric elements can accommodate different types of misalignments, including angular, parallel, and radial misalignments. The elasticity of the material allows for limited movement between the shafts while still transmitting torque efficiently.

3. Torsional Flexibility:

Elastomers offer torsional flexibility, which allows them to twist and deform under torque loads. This feature helps to minimize torsional stresses and torsional backlash, making them suitable for applications requiring precise motion control.

4. Shock and Impact Resistance:

Due to their high resilience, elastomers can withstand sudden shocks and impacts without permanent deformation. This property makes them ideal for use in machinery subjected to varying loads or rapid changes in torque.

5. No Lubrication Requirement:

Elastomeric couplings are often maintenance-free because the elastomer material does not require additional lubrication. This reduces maintenance costs and simplifies the overall system upkeep.

6. Electric Isolation:

In certain applications, elastomeric materials can provide electrical isolation between the driving and driven components. This can help prevent the transmission of electrical currents or static charges through the coupling.

7. Corrosion Resistance:

Many elastomers used in couplings are resistant to corrosion, making them suitable for use in challenging environments where exposure to chemicals or moisture is a concern.

8. Easy Installation:

Elastomeric couplings are often designed for ease of installation and replacement. Their flexibility allows for simple and quick assembly onto the shafts without the need for special tools or complex procedures.

Given these advantages, elastomeric materials are popular choices for various flexible shaft couplings, including jaw couplings, tire couplings, and spider couplings. However, it is essential to select the right elastomer material based on the specific application requirements, such as temperature range, chemical compatibility, and torque capacity.

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Comparing Shaft Couplings with Other Types of Couplings in Performance

Shaft couplings are essential components in mechanical power transmission systems, and their performance characteristics vary depending on the coupling type. Let’s compare shaft couplings with other common types of couplings:

1. Shaft Couplings:

Shaft couplings come in various designs, including flexible and rigid couplings. They are widely used in a broad range of applications due to their ability to transmit torque and accommodate misalignments between rotating shafts. Flexible shaft couplings, with elastomeric or metallic elements, offer good misalignment compensation and damping characteristics. Rigid couplings, on the other hand, provide precise torque transmission and are ideal for applications where shafts are well-aligned.

2. Gear Couplings:

Gear couplings are robust and designed for heavy-duty applications. They consist of two external gear hubs with internal gear teeth that mesh together. Gear couplings can handle high torque, high-speed, and angular misalignment. They are often used in demanding industries such as steel, mining, and paper manufacturing.

3. Grid Couplings:

Grid couplings feature a flexible grid element between the two halves of the coupling. They provide excellent shock absorption and misalignment compensation. Grid couplings are commonly used in pumps, compressors, and other industrial machinery.

4. Disc Couplings:

Disc couplings utilize flexible metallic discs to transmit torque and compensate for misalignment. They offer high torsional stiffness, making them suitable for applications requiring precise motion control, such as robotics and CNC machines.

5. Jaw Couplings:

Jaw couplings consist of two hubs with elastomeric spider inserts. They are easy to install, have good misalignment capabilities, and offer electrical isolation between shafts. Jaw couplings are widely used in light to medium-duty applications.

6. Oldham Couplings:

Oldham couplings have three discs—two outer discs with slots and a central disc with a tongue that fits into the slots. They provide excellent angular misalignment compensation while maintaining constant velocity between shafts. Oldham couplings are commonly used in printing machines and conveyors.

7. Beam Couplings:

Beam couplings are made from a single piece of flexible material with spiral cuts. They offer good misalignment compensation and torsional flexibility, making them suitable for precision equipment like encoders and servo motors.

The choice of coupling depends on the specific requirements of the application, including torque, speed, misalignment compensation, environmental conditions, and space limitations. Each coupling type has its strengths and limitations, and selecting the right coupling is crucial to ensure optimal performance and reliability in the mechanical system.

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Types of Shaft Couplings and Their Applications in Various Industries

Shaft couplings come in various types, each designed to meet specific application requirements and address different types of misalignment. Here are some common types of shaft couplings and their applications in various industries:

1. Jaw Couplings:

Applications: Jaw couplings are widely used in power transmission applications, including conveyor systems, pumps, compressors, and industrial machinery. They are suitable for moderate torque requirements and provide good misalignment compensation.

2. Gear Couplings:

Applications: Gear couplings are used in heavy-duty industrial applications such as steel mills, paper mills, and mining equipment. They offer high torque capacity and can handle significant misalignments.

3. Disc Couplings:

Applications: Disc couplings are commonly used in precision machinery and automation systems, such as printing presses, machine tools, and robotics. They provide excellent torsional stiffness and are ideal for applications requiring precise positioning.

4. Grid Couplings:

Applications: Grid couplings are used in various industrial applications, including fans, pumps, and compressors. They offer high torque capacity and good shock absorption.

5. Oldham Couplings:

Applications: Oldham couplings are used in applications requiring high misalignment compensation, such as stepper motor drives and motion control systems.

6. Diaphragm Couplings:

Applications: Diaphragm couplings are used in critical applications that demand high torque transmission accuracy, such as aerospace, medical equipment, and semiconductor manufacturing.

7. Elastomeric Couplings:

Applications: Elastomeric couplings, like spider couplings, find applications in general industrial machinery, HVAC systems, and conveyor systems. They provide damping properties and flexibility to accommodate misalignments.

8. Torsionally Rigid Couplings:

Applications: Torsionally rigid couplings are used in applications requiring precise torque transmission, such as precision machining equipment and high-speed spindles.

9. Fluid Couplings:

Applications: Fluid couplings are used in heavy machinery and drivetrains, such as mining equipment, crushers, and marine propulsion systems. They provide smooth acceleration and dampening of shock loads.

10. Magnetic Couplings:

Applications: Magnetic couplings are used in applications where hermetic sealing is required, such as chemical processing, pumps, and mixers. They allow for torque transmission without direct physical contact.

The selection of the appropriate shaft coupling type depends on factors such as torque requirements, speed, misalignment, operating conditions, and the specific needs of the application. Using the right coupling ensures efficient power transmission, protects equipment from misalignment-related issues, and enhances the overall reliability and performance of industrial machinery and systems.

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editor by CX 2023-09-07