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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Key Features to Consider When Purchasing a Jaw Coupling

When purchasing a jaw coupling for a particular application, several key features and factors should be taken into account to ensure optimal performance and reliability:

• Material: Jaw couplings are available in various materials, including aluminum, steel, and stainless steel. The choice of material depends on the application’s specific requirements, such as environmental conditions, torque levels, and chemical exposure.
• Size: Jaw couplings come in different sizes to accommodate various shaft diameters. It is essential to choose the appropriate size that matches the shaft dimensions of the connected equipment.
• Torque Rating: Consider the torque requirements of the application and ensure that the selected jaw coupling can handle the expected torque levels without causing premature wear or failure.
• Speed Rating: Check the coupling’s speed rating to ensure it can handle the rotational speed of the application without generating excessive heat or vibration.
• Misalignment Capability: Assess the jaw coupling’s ability to accommodate angular, parallel, and axial misalignment between the shafts to prevent excessive stress on connected equipment.
• Backlash: Consider the level of backlash or play in the coupling. Low backlash couplings are suitable for precision applications, while higher backlash may be acceptable for general power transmission.
• Torsional Stiffness: For applications that require accurate motion control and minimal torsional wind-up, select a jaw coupling with adequate torsional stiffness.
• Environmental Factors: Consider the operating environment, including temperature, humidity, and exposure to chemicals or corrosive substances. Choose a coupling that can withstand the environmental conditions of the application.
• Installation and Maintenance: Check the ease of installation and maintenance requirements of the jaw coupling to ensure smooth integration into the system and reduce downtime during maintenance.
• Manufacturer Reputation: Purchase jaw couplings from reputable manufacturers known for producing high-quality, reliable products with a history of successful applications in various industries.

By carefully considering these key features, buyers can select the most suitable jaw coupling for their specific applications, ensuring efficient power transmission and reliable performance of connected equipment.

How do jaw couplings handle axial movement in rotating machinery?

Jaw couplings are primarily designed to handle angular and parallel misalignment between rotating shafts. While they are not specifically designed for axial movement compensation, they can accommodate a limited amount of axial movement under certain conditions.

The ability of a jaw coupling to handle axial movement depends on the specific design of the coupling and the type of elastomer spider used. The elastomer spider serves as the flexible element between the two coupling hubs and is responsible for transmitting torque and compensating for misalignment. Some jaw couplings have an elastomer spider with axial flexibility, allowing the coupling to accommodate minor axial movements while maintaining effective torque transmission.

However, it is essential to note that jaw couplings have limitations regarding axial movement. They are not designed for significant axial loads or axial displacements. Excessive axial movement can lead to premature wear and damage to the elastomer spider, reducing the coupling’s performance and lifespan.

If an application requires significant axial movement compensation, other types of couplings may be more suitable. For instance, flexible beam couplings or bellows couplings are designed specifically to handle axial movement and are often used in applications where axial misalignment is a critical consideration.

In summary, while jaw couplings can handle a certain amount of axial movement, they are primarily intended for angular and parallel misalignment compensation. For applications with significant axial movement requirements, it is essential to consider coupling types explicitly designed for this purpose.

Advantages of Using Jaw Couplings in Mechanical Systems

Jaw couplings offer several advantages in mechanical systems:

• Misalignment Compensation: Jaw couplings can tolerate angular, parallel, and axial misalignments between connected shafts, reducing the need for precise alignment during installation.
• Vibration Damping: The elastomeric spider in the jaw coupling absorbs shocks and vibrations, providing smoother operation and extending the life of connected equipment.
• Backlash-Free: Due to the tight fit between the jaws and the spider, jaw couplings are virtually backlash-free, enabling more accurate and responsive motion transfer.
• High Torque Capacity: Jaw couplings can handle high torque loads, making them suitable for a wide range of industrial applications.
• Easy Installation: With a simple design and few components, jaw couplings are easy to install and maintain.
• Cost-Effective: Compared to other types of couplings, jaw couplings are relatively cost-effective, providing reliable power transmission at a lower cost.
• Fail-Safe Design: In the event of a spider failure, the jaws can still maintain some torque transmission, allowing for limited operation and preventing sudden breakdowns.

Due to these advantages, jaw couplings are widely used in pumps, motors, fans, and various industrial machinery where misalignment, vibration, and torque transmission are critical factors.

editor by CX 2023-08-07