Product Description

Aluminum Alloy GFC-55X49 Type Shaft Coupler Rubber Flexible Coupling

 

Aluminum Alloy GFC-55X49 Type Shaft Coupler Rubber Flexible Coupling

 

model parameter	common bore diameter d1,d2	ΦD	L	LF	LP	F	M	tightening screw torque (N.M)
GFC-14X22	3,4,5,6,6.35	14	22	14.3	6.6	5.0	M2.5	1.0
GFC-20×25	3,4,5,6,6.35,7,8,9,9.525,10	20	25	16.7	8.6	5.9	M3	1.5
GFC-20X30	3,4,5,6,6.35,7,8,9,9.525,10	20	30	19.25	8.6	5.9	M3	1.5
GFC-25X30	4,5,6,6.35,7,8,9,9.525,10,11,12	25	30	20.82	11.6	8.5	M4	2.5
GFC-25X34	4,5,6,6.35,7,8,9,9.525,10,11,12	25	34	22.82	11.6	8.5	M4	2.5
GFC-30×35	5,6,6.35,7,8,9,10,11,12,12.7,14,15,16	30	35	23	11.5	10	M4	2.5
GFC-30X40	5,6,6.35,7,8,9,10,11,12,12.7,14,15,16	30	40	25	11.5	10	M4	2.5
GFC-40X50	6,8,9,10,11,12,12.7,14,15,16,17,18,19,20,22,24	40	50	32.1	14.5	14	M5	7
GFC-40X55	6,8,9,10,11,12,12.7,14,15,16,17,18,19,20,22,24	40	55	34.5	14.5	14	M5	7
GFC-40X66	6,8,910,11,12,12.7,14,15,16,17,18,19,20,22,24	40	66	40	14.5	14	M5	7
GFC-55X49	10,11,12,12.7,14,15,16,17,18,19,20,22,24,25,28,30,32	55	49	32	16.1	13.5	M6	12
GFC-55X78	8,10,12,12.7,14,15,16,17,18,19,20,22,24,25,28,30,32	55	78	46.4	16.1	19	M6	12
GFC-65X80	14,15,16,17,18,19,20,22,24,25,28,30,32,35,38,40	65	80	48.5	17.3	14	M8	20
GFC-65X90	14,15,16,17,18,19,20,22,24,25,28,30,32,35,38,40	65	90	53.5	17.3	22.5	M8	20
GFC-80X114	19,20,22,24,25,28,30,32,35,38,40,42,45	80	114	68	22.5	16	M8	20
GFC-95X126	19,20,22,24,25,28,30,32,35,38,40,42,45,50,55	95	126	74.5	24	18	M10	30

 

model parameter	Rated torque (N.M)*	allowable eccentricity (mm)*	allowable deflection angle (°)*	allowable axial deviation (mm)*	maximum speed rpm	static torsional stiffness (N.M/rad)	moment of inertia (Kg.M2)	Material of shaft sleeve	Material of shrapnel	surface treatment	weight (g)
GFC-14X22	5.0	0.1	1	±02	10000	50	1.0×10-6	High strength aluminum alloy	Polyurethane imported from Germany	Anodizing treatment	10
GFC-20X25	5.0	0.1	1	±02	10000	50	1.0×10-6				15
GFC-20X30	5.0	0.1	1	^02	10000	53	1.1×10-6				19
GFC-25X30	10	0.1	1		10000	90	5.2X10-6				33
GFC-25X34	10	0.1	1	£)2	10000	90	5.2×10-6				42
GFC-30X35	12.5	0.1	1	±02	10000	123	6.2×10-6				50
GFC-30×40	12.5	0.1	1	102	10000	123	6.2×10-6				60
GFC-40X50	17	0.1	1		8000	1100	3.8×10-5				115
GFC-40X55	17	0.1	1	±02	8000	1100	3.8×10-5				127
GFC-40X66	17	0.1	1		7000	1140	3.9×10-5				154
GFC-55X49	45	0.1	1	±02	6500	2350	1.6×10-3				241
GFC-55X78	45	0.1	1	102	6000	2500	1.6×10-3				341
GFC-65X80	108	0.1	1	±02	5500	4500	3.8×10-3				433
GFC-65X90	108	0.1	1	±02	5500	4800	3.8×10-3				583
GFC-80X114	145	0.1	1	£)2	4500	5000	1.8×10-3				1650

 

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Can Shaft Couplings Compensate for Angular, Parallel, and Axial Misalignments?

Yes, shaft couplings are designed to compensate for different types of misalignments between rotating shafts in mechanical power transmission systems. They can handle the following types of misalignments:

• Angular Misalignment: This occurs when the shafts are not parallel and have an angle between them. Flexible couplings, such as elastomeric, beam, or Oldham couplings, can accommodate angular misalignments by allowing slight angular movement between the shafts while transmitting torque.
• Parallel Misalignment: This happens when the shafts are not collinear, resulting in axial displacement. Flexible couplings with lateral flexibility, like elastomeric or bellows couplings, can handle parallel misalignment by allowing limited lateral movement between the shafts.
• Radial Misalignment: Radial misalignment occurs when the shafts have lateral displacement but remain parallel. Flexible couplings, such as jaw or grid couplings, can absorb radial misalignment by permitting some lateral deflection while transmitting torque.

It is essential to note that while shaft couplings can compensate for misalignments to some extent, they do have their limits. The magnitude of misalignment they can handle depends on the type and design of the coupling. Exceeding the specified misalignment capabilities of a coupling can lead to premature wear, reduced efficiency, and possible coupling failure.

Therefore, when selecting a shaft coupling for an application, it is crucial to consider the expected misalignment and choose a coupling that can accommodate the anticipated misalignment range. Additionally, maintaining proper alignment through regular maintenance and periodic inspections is essential to ensure the coupling’s optimal performance and extend its service life.

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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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Diagnosing and Fixing Common Issues with Shaft Couplings

Regular inspection and maintenance of shaft couplings are essential to detect and address common issues that may arise during operation. Here are steps to diagnose and fix some common coupling problems:

1. Abnormal Noise or Vibration:

If you notice unusual noise or excessive vibration during equipment operation, it may indicate misalignment, wear, or damage in the coupling. Check for any visible signs of damage, such as cracks or deformations, and inspect the coupling for proper alignment.

Diagnosis:

Use a vibration analysis tool to measure the vibration levels and identify the frequency of the abnormal vibrations. This can help pinpoint the source of the problem.

Fix:

If misalignment is the cause, adjust the coupling to achieve proper alignment between the shafts. Replace any damaged or worn coupling components, such as spiders or elastomeric inserts, as needed.

2. Excessive Heat:

Feeling excessive heat on the coupling during operation can indicate friction, improper lubrication, or overload conditions.

Diagnosis:

Inspect the coupling and surrounding components for signs of rubbing, lack of lubrication, or overloading.

Fix:

Ensure proper lubrication of the coupling, and check for any interference between the coupling and adjacent parts. Address any overloading issues by adjusting the equipment load or using a coupling with a higher torque capacity.

3. Shaft Movement:

If you observe axial or radial movement in the connected shafts, it may indicate wear or improper installation of the coupling.

Diagnosis:

Check the coupling’s set screws, keyways, or other fastening methods to ensure they are secure and not causing the shaft movement.

Fix:

If the coupling is worn or damaged, replace it with a new one. Ensure proper installation and use appropriate fastening methods to secure the coupling to the shafts.

4. Sheared Shear Pin:

In shear pin couplings, a sheared shear pin indicates overloading or shock loads that exceeded the coupling’s torque capacity.

Diagnosis:

Inspect the shear pin for damage or breakage.

Fix:

Replace the sheared shear pin with a new one of the correct specifications. Address any overloading issues or adjust the equipment to prevent future shearing.

5. Coupling Wear:

Regular wear is normal for couplings, but excessive wear may lead to decreased performance and increased misalignment.

Diagnosis:

Inspect the coupling components for signs of wear, such as worn elastomeric elements or damaged teeth.

Fix:

Replace the worn or damaged components with new ones of the appropriate specifications.

Remember, regular maintenance and periodic inspection are key to diagnosing issues early and preventing severe problems. Always follow the manufacturer’s recommendations for maintenance and replacement schedules to ensure the proper functioning and longevity of the shaft coupling.

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editor by CX 2024-04-02