Product Description

LLB Type Tyre Coupling

The LLB Flexible Tyre Coupling is a kind of high elastic coupling, with a 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.

LLB Type Tyre Coupling Main Dimension And Parameter

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	H			L	Tn	(n)	kg·m2	kg
						Y J1 Z1	N·m	r/min
LLB1	60	20	26	12-M4×12	6-11	16-25	10	5000	0.0003	0.4
LLB2	100	36	32/37	12-M6×18	10-19	25-42	50	5000	0.0035	1.5
LLB3	120	44	39	12-M8×20	16-24	30-52	100	4000	0.01	2.2
LLB4	140	50	45	12-M10×20	22-35	38-82	160	3150	0.571	3.1
LLB5	160	60	51	12-M10×22	25-38	44-82	224	2800	0.031	5
LLB6	185	70	58	12-M12×25	30-45	60-112	315	2500	0.07	8.1
LLB7	220	85	68	12-M12×28	35-50	60-112	500	2000	0.15	13
LLB8	265	110	82	12-M12×32	40-56	84-142	800	1600	0.30	22
LLB9	310	120	106	12-M16×40	45-71	84-142	1250	1250	0.75	35
LLB10	400	150	124	12-M20×50	60-85	107-172	1600	1800	2.2	69
LLB11	445	190	140	12-M20×56	80-120	132-212	2250	1600	4.4	110
LLB12	550	238	172	16-M24×71	100-150	167-252	5000	1200	14	190
LLB13	700	318	220	24-M24×71	130-100	202-352	1000	1000	38	340

Note:Z₁ type shaft hole can not be used at both ends of half couplings.

Product Show

♦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 shafts 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 new models when there are new cars in the market.

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

♦FAQ
Q 1: Are you a trading company or a 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 customers with customized PDF or AI format artworks.

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 an excellent price principle, when you make the bulk order the cost of the sample will be deducted.

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

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 /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

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Can flexible couplings be used in precision motion control systems?

Yes, flexible couplings can be used in precision motion control systems, but careful consideration must be given to their selection and application. Precision motion control systems require high accuracy, repeatability, and minimal backlash. Flexible couplings can play a crucial role in such systems when chosen appropriately and used in the right conditions.

Selection Criteria: When selecting a flexible coupling for a precision motion control system, several key factors should be considered:

• Backlash: Look for couplings with minimal or no backlash to ensure accurate motion transmission and precise positioning.
• Torsional Stiffness: Choose a coupling with sufficient torsional stiffness to minimize torsional deflection and maintain accurate motion control.
• Misalignment Compensation: Ensure the coupling can accommodate the required misalignment without introducing significant variations in motion accuracy.
• Dynamic Performance: Evaluate the coupling’s dynamic behavior under varying speeds and loads to ensure smooth and precise motion control during operation.
• Material and Construction: Consider the material and construction of the coupling to ensure it can withstand the specific environmental conditions and loads of the motion control system.
• Size and Space Constraints: Choose a compact and lightweight coupling that fits within the available space and does not add excessive inertia to the system.

Applications: Flexible couplings are commonly used in precision motion control systems, such as robotics, CNC machines, semiconductor manufacturing equipment, optical systems, and high-precision measurement instruments. They help transmit motion from motors to various components, such as lead screws, spindles, or precision gears, while compensating for misalignments and providing shock and vibration absorption.

Specialized Couplings: For ultra-high precision applications, specialized couplings, such as zero-backlash or torsionally rigid couplings, may be preferred. These couplings are designed to provide precise motion transmission without any play or torsional deflection, making them suitable for demanding motion control tasks.

Installation and Alignment: Proper installation and alignment are critical to achieving optimal performance in precision motion control systems. Precise alignment of the coupling and connected components helps maintain accurate motion transmission and minimizes eccentricities that could impact the system’s precision.

Summary: Flexible couplings can indeed be used in precision motion control systems when chosen and applied correctly. By considering factors like backlash, torsional stiffness, misalignment compensation, and dynamic performance, users can select the right coupling to ensure high accuracy, repeatability, and reliable motion control in their specific application.

Can flexible couplings be used in high-temperature environments, such as furnaces and kilns?

Flexible couplings can be used in high-temperature environments, such as furnaces and kilns, but the selection of the appropriate coupling is crucial to ensure reliable performance and longevity under these extreme conditions. Here are some key considerations:

• Material Selection: The choice of materials is critical when using flexible couplings in high-temperature applications. Look for couplings made from heat-resistant materials that can withstand the elevated temperatures without experiencing significant degradation. Common materials used for high-temperature couplings include stainless steel, high-temperature alloys, and certain types of elastomers designed for heat resistance.
• Lubrication: High temperatures can cause lubricants to break down or evaporate more quickly. Some flexible couplings may require specialized high-temperature lubricants to ensure smooth operation and reduce wear at elevated temperatures. Check the manufacturer’s recommendations for lubrication in high-temperature environments.
• Thermal Expansion: In high-temperature applications, the equipment and shafts may experience thermal expansion, leading to misalignment. Flexible couplings with higher misalignment capabilities may be necessary to accommodate these thermal effects and prevent additional stress on the system.
• Torsional Stiffness: Consider the required torsional stiffness for the specific application. In high-temperature environments, couplings may experience changes in stiffness due to temperature variations. It is essential to choose a coupling with appropriate torsional characteristics for the intended operating temperature range.
• Application Specifics: Evaluate the specific operating conditions of the furnace or kiln, including the maximum and fluctuating temperatures, vibration levels, and potential exposure to chemicals or other harsh elements. Choose a coupling that can withstand these conditions without compromising performance or safety.
• Coupling Type: Different types of flexible couplings offer varying degrees of heat resistance and performance capabilities. For example, certain types of disc couplings or metal bellows couplings are more suitable for high-temperature environments due to their robust construction and resistance to heat.
• Regular Maintenance: In high-temperature applications, couplings may be subject to more stress and wear. Regular inspection and maintenance are essential to monitor the coupling’s condition, lubrication, and alignment to ensure it continues to function optimally in the challenging environment.

Overall, flexible couplings can be utilized in high-temperature environments, but it is vital to choose a coupling specifically designed and rated for these conditions. Working closely with coupling manufacturers and considering the specific demands of the application will help ensure that the selected coupling can handle the challenges posed by furnaces, kilns, and other high-temperature equipment, providing reliable power transmission and contributing to the overall efficiency and safety of the system.

How does a flexible coupling protect connected equipment from shock loads and vibrations?

Flexible couplings play a crucial role in protecting connected equipment from shock loads and vibrations by providing damping and isolation capabilities. When machines or mechanical systems experience sudden shock loads or vibrations, the flexible coupling acts as a buffer, absorbing and dissipating the impact, thereby reducing the transmitted forces and protecting the equipment. Here’s how flexible couplings achieve this:

• Damping of Vibrations: Flexible couplings are often made from materials that exhibit damping properties. When vibrations are transmitted through the shafts, the flexible coupling’s material can absorb a portion of the vibrational energy, converting it into heat. This dissipation of energy helps reduce the amplitude of the vibrations and prevents them from propagating further into the connected equipment.
• Vibration Isolation: In addition to damping vibrations, flexible couplings also offer a degree of vibration isolation. They are designed to decouple the two shafts, which means that vibrations occurring on one shaft are not directly transmitted to the other shaft. This isolation effect prevents vibrations from propagating across the entire system and minimizes the impact on sensitive equipment or nearby components.
• Shock Absorption: When the connected machinery experiences sudden shock loads, such as during a startup or abrupt changes in load, the flexible coupling can act as a shock absorber. The coupling’s design allows it to deform slightly under the impact, absorbing and distributing the shock energy. This prevents the shock from being directly transferred to the connected equipment, reducing the risk of damage or premature wear.
• Misalignment Compensation: Flexible couplings are capable of compensating for misalignment between the shafts. Misalignment can lead to additional stresses and vibrations in the system. By allowing for some degree of angular, parallel, and axial misalignment, the flexible coupling reduces the forces transmitted to the connected equipment and the supporting structures.
• Reduction of Resonance Effects: Resonance is a phenomenon that occurs when the natural frequency of a system matches the frequency of external vibrations, leading to amplified vibrations. Flexible couplings can help avoid resonance effects by altering the system’s natural frequency and providing some level of flexibility that damps the resonance response.

By incorporating a flexible coupling into the drivetrain or power transmission system, equipment manufacturers and operators can significantly improve the reliability and longevity of connected machinery. The coupling’s ability to dampen vibrations, isolate shocks, and compensate for misalignment contributes to a smoother and more stable operation, reducing maintenance requirements and enhancing overall system performance.

In summary, flexible couplings act as protective elements, shielding connected equipment from shock loads and vibrations. Their ability to dampen vibrations, isolate shocks, and compensate for misalignment contributes to a smoother and more reliable operation of various mechanical systems.

editor by CX 2024-03-14