Product Description

Product Description

Roller chain couplings have the advantages of simple structure, convenient loading and unloading, large torque transmission, and easy operation. However, there is significant wear between the chains, especially during high-speed operation when the radial motion generated by centrifugal force will accelerate their wear. Therefore, it is not suitable for use at high speeds and under impact loads, nor for the connection of vertical shafts.

When designing the overall structure of the coupling, full attention should be paid to the lubrication and dust prevention between the tooth surface and the rollers, and an outer shell should be added. In addition to dust and oil storage, it also has a protective effect. Because if the chain breaks, it may cause personal accidents.

The double row sleeve roller chain coupling has formed a standard (old standard GB6069-85, new standard GB/T 6069-2002). The transmission torque and allowable speed are 4 times and 2 times that of a single row roller chain of the same size, respectively. Because when the chain size is determined, it can accommodate 2 teeth within the width of a single row of sleeve rollers, while a double row can only accommodate 1 tooth, the tooth thickness of a single row is only half of that of a double row. So, the rollers of the double row chain are located in the grooves of the main and driven sprockets, and when subjected to force, they rotate independently without interfering with each other, reducing wear.

Product Parameters

 

model	Nominal torqueTnN·m	Allowable speed(n) r/min		Axis hole diameter d1,d2	Axis hole length		Chain number	chain Pitch	Number of teeth Z	D	b1	S	A	Dx ()	Lx ()	kg	Transmission inertiakg·m2
					Ymodel	J1model
		No cover installed	Installing cover		L	L1
GL1	40	1400	4500	16	42	–	06B	9.525	14	51.06	5.3	4.9	–	70	70	0.40	0.0571
				18	42	–							–
				19	42	–							–
				20	52	38							4
GL2	63	1250	4500	19	42	–	06B	9.525	16	57.08	5.3	4.9	–	75	75	0.70	0.0571
				20	52	38							4
				22	52	38							4
				24	52	38							4
GL3	100	1000	4000	20	52	38	08B	12.7	14	68.88	7.2	6.7	12	85	80	1.1	0.00038
				22	52	38							12
				24	52	44							12
				25	62	–							6
GL4	160	1000	4000	24	52	–	08B	12.7	16	76.91	7.2	6.7	–	95	88	1.8	0.0
				25	62	44							6
				28	62	44							6
				30	82	60							–
				32	82	60							–
GL5	250	800	3150	28	62	–	10A	15.875	16	94.46	8.9	9.2	–	112	100	3.2	0.0571
				30	82	60							–
				32	82	60							–
				35	82	60							–
				38	82	60							–
				40	112	84							–
GL6	400	630	2500	32	82	60	10A	15.875	20	116.57	8.9	9.2	–	140	105	5.0	0.0058
				35	82	60							–
				38	82	60							–
				40	112	84							–
				42	112	84							–
				45	112	84							–
				18	112	84							–
				50	112	84							–
GL7	630	630	2500	40	112	60	12A	19.05	18	127.78	11.9	10.9	–	150	122	7.4	0.012
				42	112	60							–
				45	112	60							–
				48	112	84							–
				50	112	84							–
				55	112	84							–
				60	142	107							–
GL8	1000	500	2240	45	112	84	16A	25.40	16	154.33	15.0	14.3	12	180	135	11.1	0.571
				48	112	84							12
				50	112	84							12
				55	112	84							12
				60	142	107							–
				65	142	107							–
				70	142	107							–
GL9	1600	400	2000	50	112	84	16A	25.4	20	186.50	15.0	14.3	12	215	145	20.0	0.061
				55	112	84							12

 

Packaging & Shipping

 

After Sales Service

 

If during transportation or if the customer receives the goods, opens the packaging and finds any damage, they can resend a new product to the customer.

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What are the safety considerations when using chain couplings?

When using chain couplings, it is important to consider several safety aspects to ensure the protection of personnel, equipment, and the overall system. Here are some key safety considerations when using chain couplings:

• Proper Installation: Ensure that the chain coupling is correctly installed according to the manufacturer’s instructions. Improper installation can lead to misalignment, inadequate lubrication, or other issues that can compromise safety and performance.
• Alignment and Maintenance: Regularly inspect and maintain the chain coupling to ensure proper alignment, lubrication, and tension. Misalignment or lack of maintenance can result in premature wear, excessive vibration, and potential coupling failure, posing safety risks.
• Guarding: Consider implementing appropriate guarding measures to protect personnel from coming into contact with the rotating chain coupling components. This is particularly important in applications where there is a risk of entanglement or pinch points.
• Lockout/Tagout: Follow proper lockout/tagout procedures when performing maintenance or repairs on machinery equipped with chain couplings. This ensures that the equipment is safely de-energized, preventing accidental startup or release of stored energy.
• Load Capacity: Do not exceed the recommended load capacity of the chain coupling. Overloading the coupling can lead to excessive stress, premature failure, and potential hazards. Consider the dynamic loads, shock loads, and any transient conditions that the coupling may experience during operation.
• Environmental Factors: Evaluate the operating environment and consider any specific safety considerations related to temperature, humidity, corrosive substances, or other environmental factors. Take appropriate measures such as using suitable materials or protective coatings to ensure the coupling’s integrity and safety.
• Training and Awareness: Provide adequate training to personnel who operate or work near chain couplings. Ensure that they understand the potential hazards, safety procedures, and the importance of following manufacturer’s guidelines and industry best practices.
• Emergency Stop: Implement an emergency stop system or device that can quickly halt the machinery in case of an emergency or imminent danger. This allows for immediate shutdown and can help prevent accidents or injuries.

It is essential to consult the manufacturer’s documentation, safety guidelines, and applicable industry standards to ensure compliance with the recommended safety practices for chain couplings. By prioritizing safety considerations, potential risks can be minimized, and the overall reliability and performance of the chain coupling system can be enhanced.

How to install a chain coupling?

Proper installation of a chain coupling is crucial for ensuring its optimal performance and longevity. Here are the steps to follow when installing a chain coupling:

1. Prepare the Work Area: Before beginning the installation, ensure that the work area is clean and free from any debris or contaminants. This will help prevent any damage to the coupling components during installation.

2. Inspect the Components: Carefully inspect the chain coupling components, including the sprockets, roller chain, connecting pins, and bushings or bearings. Check for any signs of damage or wear. Replace any components that are worn or damaged.

3. Position the Coupling: Position the coupling on the shafts that need to be connected. Ensure that the shafts are aligned properly and the coupling is centered between them.

4. Install the Sprockets: Slide the sprockets onto the shafts, with the teeth facing each other. Make sure the sprockets are securely seated on the shafts and aligned with each other.

5. Connect the Roller Chain: Loop the roller chain around the sprockets, ensuring that it is properly engaged with the sprocket teeth. Connect the ends of the roller chain using the connecting pins. Insert the connecting pins through the pin holes in the chain links and secure them with retaining clips or other fasteners.

6. Tension the Chain: Adjust the tension of the roller chain to the manufacturer’s specifications. The chain should have the appropriate amount of slack to allow for smooth operation and accommodate misalignment but should not be too loose or too tight. Follow the manufacturer’s guidelines for determining the correct chain tension.

7. Secure the Bushings or Bearings: If the chain coupling uses bushings or bearings, ensure they are properly installed in the bores of the sprockets and provide a secure and smooth rotation of the shafts.

8. Apply Lubrication: Apply the recommended lubricant to the roller chain and sprockets. Proper lubrication is essential for reducing friction, wear, and noise, and it helps ensure smooth operation of the chain coupling.

9. Check Alignment and Rotation: Once the chain coupling is installed, check the alignment of the shafts and the rotation of the coupling. Verify that the coupling rotates smoothly without any binding or interference.

10. Inspect and Test: After installation, thoroughly inspect the entire chain coupling assembly. Look for any signs of misalignment, unusual noise, or vibration. Test the coupling’s operation by running the machinery at a low speed and gradually increasing to the normal operating speed. Monitor the coupling for any issues or abnormalities.

Following these installation steps will help ensure a proper and secure installation of the chain coupling, promoting efficient power transmission and minimizing the risk of premature failure or damage.

What are the disadvantages of chain couplings?

• Backlash: Chain couplings can exhibit a certain degree of backlash or play due to the clearances between the chain rollers and the sprocket teeth. This can result in reduced precision and accuracy in applications where precise motion control is required.

• Noise and Vibration: The engagement between the chain and sprockets can generate noise and vibration during operation. This can be problematic in applications where noise reduction is important or where excessive vibration can affect the performance or integrity of the machinery.

• Maintenance Requirements: While chain couplings are relatively easy to maintain, they still require regular attention. Lubrication of the chain and sprockets is essential to reduce wear and friction. Additionally, periodic inspection and adjustment of chain tension are necessary to ensure proper operation. Neglecting maintenance tasks can lead to premature wear, decreased efficiency, and potential coupling failure.

• Space and Weight: Chain couplings occupy a certain amount of space due to the presence of sprockets and the length of the chain. In applications with space constraints, the size of the coupling may limit its usability. Additionally, the weight of the coupling components can be a consideration in applications where weight reduction is important.

• Limitations in High-Speed Applications: Chain couplings may have limitations in high-speed applications. At high rotational speeds, the centrifugal forces acting on the chain and sprockets can increase, potentially causing stress and reducing the efficiency of the coupling. In such cases, alternative coupling designs, such as gear or flexible shaft couplings, may be more suitable.

• Wear and Service Life: Like any mechanical component, chain couplings are subject to wear over time. The chain and sprockets can experience gradual wear and elongation, requiring eventual replacement. The service life of a chain coupling depends on factors such as the operating conditions, maintenance practices, and the quality of the components used.

While chain couplings offer several advantages, it is important to consider these disadvantages and evaluate their impact based on the specific application requirements. Proper maintenance, periodic inspection, and careful consideration of design factors can help mitigate these disadvantages and ensure optimal performance and longevity of the chain coupling.

editor by CX 2024-04-26