Product Description

LLA Type Tyre Coupling for Metallurgical

The LLA Flexible Tyre Coupling is a kind of high elastic coupling, with good damping buffer and superior offset compensation performance.
The working temperature of 20~80 degrees Celsius, transmitting torque 10~20000NM, suitable for damp, dust, shock, vibration, reversing the changeable and frequent starting working conditions, and convenient assembly and disassembly, no lubrication, durable and reliable. Non standard couplings are made in accordance with special needs. In overloading work and half coupling, there will be no malignant accidents.

LLA Type Tyre Coupling Main Dimension And Parameter(JB/T10541-2005)

Type	Main dimension			Number of screws Md×L	Shaft hole diameter d dz	Shaft hole length		Allowable Torque	Allowable Speed	Rotary inertia	Mass
	D	D1	S			L	L1	Tn	(n)	kg·m2	kg
						Y J1 J	Z	N·m	r/min
LLA1	60	20	4	12-M4×10	6-11	16-25	–	10	5000	0.0004	0.35
LLA2	100	36	8	12-M6×20	8-19	14-42	35	20	5000	0.005	1.33
LLA3	135	48	12	12-M8×25	18-28	30-62	35-50	80	4000	0.571	3.4
LLA4	180	64	18	12-M10×30	25-38	44-82	50-65	160	3150	0.071	7.4
LLA5	210	80	18	16-M10×40	32-50	60-112	65-90	315	2800	0.154	13.4
LLA6	265	100	24	16-M12×40	40-56	84-112	90	630	2500	0.46	22.6
LLA7	310	120	28	16-M16×50	48-75	84-142	90-120	1250	2000	1.86	34.8
LLA8	400	150	38	16-M20×60	60-95	107-172	120-145	2500	1600	3.57	74.3
LLA9	450	190	42	20-M20×70	80-125	132-212	145-180	5000	1250	6.47	111
LLA10	550	230	52	24-M24×80	100-150	167-252	180-220	10000	1000	17.55	191
LLA11	700	280	70	32-M30×90	130-180	202-302	220-270	20000	800	54.1	373

Note:
1.For 2 half coupling Shaft holes, Y,J,J₁ type shaft hole may be used as required,but Z,J type shaft hole shall not be used at both ends.

2.S dimension should take into consideration if Z₁ shaft hole is to be used.
 

Product Display
 

♦Other Products List

Transmission Machinery  Parts Name	Model
Universal Coupling	WS,WSD,WSP
Cardan Shaft	SWC,SWP,SWZ
Tooth Coupling	CL,CLZ,GCLD,GIICL, GICL,NGCL,GGCL,GCLK
Disc Coupling	JMI,JMIJ,JMII,JMIIJ
High Flexible Coupling	LM
Chain Coupling	GL
Jaw Coupling	LT
Grid Coupling	JS

♦Our Company

HangZhou CHINAMFG Machinery Manufacturing Co., Ltd. is a high-tech enterprise specializing in the design and manufacture of various types of coupling. There are 86 employees in our company, including 2 senior engineers and no fewer than 20 mechanical design and manufacture, heat treatment, welding, and other professionals.

Advanced and reasonable process, complete detection means. Our company actively introduces foreign advanced technology and equipment, on the basis of the condition, we make full use of the advantage and do more research and innovation. Strict to high quality and operate strictly in accordance with the ISO9000 quality certification system standard mode.

Our company supplies different kinds of products. High quality and reasonable price. We stick to the principle of “quality first, service first, continuous improvement and innovation to meet the customers” for the management and “zero defect, zero complaints” as the quality objective. 

♦Our Services
1.Design Services
Our design team has experience in cardan shaft relating to product design and development. If you have any needs for your new product or wish to make further improvements, we are here to offer our support.

2.Product Services
raw materials → Cutting → Forging →Rough machining →Shot blasting →Heat treatment →Testing →Fashioning →Cleaning→ Assembly→Packing→Shipping

3.Samples Procedure
We could develop the sample according to your requirement and amend the sample constantly to meet your need.

4.Research & Development
We usually research the new needs of the market and develop the new model when there is new cars in the market.

5.Quality Control
Every step should be special test by Professional Staff according to the standard of ISO9001 and TS16949.

♦FAQ
Q 1: Are you trading company or manufacturer?
A: We are a professional manufacturer specializing in manufacturing
various series of couplings.

Q 2:Can you do OEM?
Yes, we can. We can do OEM & ODM for all the customers with customized artworks of PDF or AI format.

Q 3:How long is your delivery time?
Generally it is 20-30 days if the goods are not in stock. It is according to quantity.

Q 4: Do you provide samples ? Is it free or extra ?
Yes, we could offer the sample but not for free.Actually we have a very good price principle, when you make the bulk order then cost of sample will be deducted.

Q 5: How long is your warranty?
A: Our Warranty is 12 month under normal circumstance.

Q 6: What is the MOQ?
A:Usually our MOQ is 1pcs.

Q 7: Do you have inspection procedures for coupling ?
A:100% self-inspection before packing.

Q 8: Can I have a visit to your factory before the order?
A: Sure,welcome to visit our factory.

Q 9: What’s your payment?
A:1) T/T. 

♦Contact Us

Web: huadingcoupling
Add: No.11 HangZhou Road,Chengnan park,HangZhou City,ZheJiang Province,China

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What are the Temperature and Speed Limits for Tyre Coupling Applications?

The temperature and speed limits for tyre coupling applications depend on various factors, including the specific design and material of the coupling, the type of rubber used in the tyre element, and the manufacturer’s guidelines. It is essential to adhere to these limits to ensure the safe and efficient operation of the coupling. Here are some general considerations regarding temperature and speed limits for tyre coupling applications:

• Temperature Limits: The temperature limits for tyre couplings are primarily determined by the elastomeric material used in the tyre element. The rubber in the tyre must be able to withstand the operating temperatures in the application without experiencing excessive degradation or hardening. Common elastomers used in tyre couplings, such as natural rubber, synthetic rubber, or polyurethane, have different temperature ranges. For instance, standard rubber couplings typically have a temperature range of -30°C to 80°C (-22°F to 176°F), while high-temperature variants can handle temperatures up to 120°C (248°F) or more. For applications operating at extreme temperatures beyond these limits, special high-temperature or low-temperature materials may be required.
• Speed Limits: The speed limits of tyre couplings are influenced by the coupling’s design, size, and the material properties of the rubber tyre element. As the rotational speed of the coupling increases, centrifugal forces can come into play, affecting the performance and stability of the coupling. Manufacturers provide specific speed ratings for their tyre couplings, indicating the maximum allowable RPM (revolutions per minute) or rotational speed. Exceeding these speed limits can lead to premature wear, reduced damping capability, and potential coupling failure. It is essential to choose a coupling with a speed rating that comfortably exceeds the application’s operating speed to account for any variations or transient conditions.

For both temperature and speed limits, it is crucial to refer to the manufacturer’s technical documentation, product specifications, or consult with their engineering support team to determine the exact limits for a specific tyre coupling model. Manufacturers conduct rigorous testing and analysis to establish these limits, ensuring safe and reliable performance under the stated operating conditions.

By understanding and adhering to the temperature and speed limits of the tyre coupling, users can select the appropriate coupling for their application and ensure its longevity and reliability in the intended operating environment.

Real-world Applications and Success Stories of Tyre Couplings in Different Industries

Tyre couplings have found widespread use in various industries due to their exceptional performance and versatility. Here are some real-world applications and success stories of tyre couplings in different industries:

• Steel Industry: In steel mills, tyre couplings are employed in heavy machinery such as rolling mills and conveyor systems. The couplings’ ability to handle high torque, misalignments, and shock loads make them ideal for these demanding applications. Tyre couplings contribute to improved efficiency, reduced downtime, and increased productivity in steel manufacturing.
• Petrochemical Industry: Petrochemical plants utilize tyre couplings in pumps, compressors, and other rotating equipment. The couplings’ resistance to chemicals and wide temperature range allow them to operate reliably in aggressive environments. Tyre couplings have proven to be a cost-effective choice, reducing maintenance and enhancing safety in petrochemical facilities.
• Mining Industry: In mining operations, tyre couplings are employed in conveyors, crushers, and ball mills. These couplings can withstand the heavy loads and vibrations encountered in mining processes. Their ability to absorb shocks and accommodate misalignments contributes to prolonged equipment life and increased uptime in mining operations.
• Pulp and Paper Industry: Tyre couplings are widely used in pulp and paper mills, where they are applied in pumps, fans, and agitators. The couplings’ damping properties help reduce vibration and noise in these processes, leading to a more comfortable working environment for employees. They have also been instrumental in optimizing energy consumption in the pulp and paper industry.
• Power Generation: In power plants, tyre couplings are utilized in turbines, generators, and cooling tower fans. The couplings’ ability to accommodate misalignment and dampen vibrations enhances the performance and reliability of power generation equipment. Tyre couplings contribute to stable power generation and play a crucial role in meeting energy demands.
• Marine Industry: Tyre couplings are employed in various marine applications, including propulsion systems, thrusters, and deck machinery. The couplings’ compact design and ability to dampen vibrations are particularly advantageous on ships and offshore platforms, where space is limited, and smooth operation is essential for crew comfort and equipment longevity.
• Automotive Industry: In the automotive sector, tyre couplings are used in manufacturing processes such as assembly lines and paint booths. The couplings’ reliability and low maintenance requirements contribute to the smooth operation of automotive production facilities. Additionally, tyre couplings are employed in dynamometers for engine testing and development.
• Food and Beverage Industry: Tyre couplings are utilized in food processing equipment, including mixers, conveyors, and filling machines. Their ability to handle frequent starts and stops without causing damage to the machinery ensures the hygienic and efficient production of food and beverage products.

These are just a few examples of the extensive applications of tyre couplings across diverse industries. Their success stories are characterized by increased operational reliability, reduced maintenance costs, and improved machinery performance. The versatility and dependability of tyre couplings have made them a preferred choice for critical rotating equipment in various industrial sectors.

Comparison between Tyre Couplings and Other Types of Flexible Couplings

Flexible couplings are essential components in machinery and equipment that connect two shafts and allow for the transmission of torque while accommodating misalignment and damping vibrations. Several types of flexible couplings are available in the market, each with its advantages and applications. Let’s compare tyre couplings with some other common types of flexible couplings:

1. Tyre Couplings:

• Advantages:
• High misalignment tolerance, accommodating angular, parallel, and axial misalignments.
• Excellent vibration damping properties, reducing the transmission of vibrations to connected equipment.
• Good shock load absorption, protecting machinery from sudden impacts and overloads.
• Simple installation and maintenance.
• Cost-effective solution for various industrial applications.
• Applications:
• Motors, pumps, compressors, fans, conveyors, and material handling systems.
• Power transmission in industrial, construction, and marine applications.
• Mining equipment and steel mills.

2. Grid Couplings:

• Advantages:
• High torque capacity and torsional stiffness.
• Moderate misalignment tolerance.
• Good vibration dampening.
• Easy maintenance, as the grid can be replaced separately.
• Applications:
• Heavy machinery and industrial equipment.
• Pumps, compressors, and conveyors.
• Applications with moderate misalignment and high torque requirements.

3. Gear Couplings:

• Advantages:
• High torque capacity and torsional stiffness.
• Good misalignment tolerance, particularly angular misalignment.
• Robust and suitable for heavy-duty applications.
• High efficiency with little power loss.
• Applications:
• Steel mills, heavy machinery, and industrial equipment.
• Mining and mineral processing equipment.
• Applications with high torque requirements and moderate misalignment.

4. Oldham Couplings:

• Advantages:
• Zero-backlash design.
• High misalignment tolerance, particularly angular misalignment.
• Smooth and accurate power transmission.
• Relatively simple construction and installation.
• Applications:
• Precision machinery, automation systems, and robotics.
• Printing and textile machines.
• Applications with low to moderate torque requirements and angular misalignment.

Each type of flexible coupling has its own strengths and limitations, making it suitable for specific applications. The choice of coupling depends on factors such as torque requirements, misalignment conditions, the level of damping required, environmental conditions, and the specific machinery or equipment involved.

editor by CX 2024-04-13