Product Description

LT Type Coupling With Elastic Sleeve And Pin(GB/T4323-2002)


1.LT type shaft coupling with elastic sleeve and pin are widely used in various mechanical and hydraulic fields, can adapt positive and negative changeful start frequent occasions.
2.Printing machinery / Packing machinery / Wood-working machinery etc large-scale mechanical equipment.

Design feature:
1.Because of elastic sleeve distortion and the teeth clearance between ring holes of half-coupling,the coupling has some compensatory of relativity shir and isolation properties.
2.Working temperature is -20ºC~+70ºC.
3.The marking method of Keyway forms and shaft holes size must be in accord with GB/T3852-1997.

Basic Parameter And Main Dimension(GB/T4323-2002)

Type Nominal torque
Bore diameter (mm)
Length of bore(mm) D A S Limited compensation Mass
Y Type J,J1,Z Type Radial
Iron Steel Iron Steel L L1 L   mm          
LT1 6.3 6600 8800 9 9 20 14   71 18 3 0.2 1°30´ 0.82 0.0005
10,11 10,11 25 17
12 12,14 32 20
LT2 16 5500 7600 12,14 12,14 32 20   80 18 3 0.2 1°30´ 1.20 0.0008
16 16,18,19 42 30 42
LT3 31.5 4700 6300 16,18,19 16,18,19 42 30 42 95 35 4 0.2 1°30´ 2.20 0.571
20 20,22 52 38 52
LT4 63 4200 5700 20,22,24 20,22,24 52 38 52 106 35 4 0.2 1°30´ 2.84 0.0037
25,28 62 44 62
LT5 125 3600 4600 25,28 25,28 62 44 62 130 45 5 0.3 1°30´ 6.05 0.012
30,32 30,32,35 82 60 82
LT6 250 3300 3800 30,35,38 32,35,38 82 60 82 160 45 5 0.3 1°00´ 9.57 0.571
40 40,42 112 84 112
LT7 500 2800 3600 40,42,45 40,42,45,48 112 84 112 190 45 5 0.3 1°00´ 14.01 0.055
LT8 710 2400 3000 45,48,50,55 45,48,50,55,56 112 84 112 224 65 6 0.4 1°00´ 23.12 0.1340
60,63 142 107 142
LT9 1000 2100 2850 50,55,56 50,55,56 112 84 112 250 65 6 0.4 1°00´ 30.69 0.2130
60,63 60,63,65,70,71 142 108 142
LT10 2000 1700 2300 63,65,70,71,75 63,65,70,71,75 142 108 142 315 80 8 0.4 1°00´ 61.40 0.660
80,85 80,85,90,95 172 132 172
LT11 4000 1350 1800 80,85,90,95 80,85,90,95 172 132 172 400 100 10 0.5 0°00´ 120.70 2.122
100,110 100,110 212 167 212
LT12 8000 1100 1450 100,110,120,125 100,110,120,125 212 167 212 475 130 12 0.5 0°00´
210.34 5.39
13 252 202 252
LT13 16000 800 1150 120,125 120,125 212 167 212 600 180 14 0.6 0°00´ 419.36 11.58
130,140,150 130,140,150 252 202 252
160 160,170 302 242 302

1.Coupling weights in the sheet are calculated according to the minimum diameter and maximum length of the shaft hole.
2.Short overloading can not exceed 2 times rated normal torque.
3.Type of shaft holes, the lengths of L and L1 also can be produced as customer requirements.
4.Rotational inertia are similar value.

Product Show

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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.

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

mechanical coupling

Exploring the various materials used in manufacturing mechanical couplings.

Mechanical couplings are manufactured using a wide range of materials, each chosen based on specific application requirements. The choice of material impacts the coupling’s performance, durability, and suitability for different operating conditions. Here are some common materials used in manufacturing mechanical couplings:

1. Steel:

Steel is one of the most widely used materials for mechanical couplings due to its strength, durability, and cost-effectiveness. It is suitable for various applications, including high-torque and high-speed requirements. Stainless steel is often preferred for couplings in corrosive environments.

2. Aluminum:

Aluminum is known for its lightweight properties, making it suitable for applications where reducing weight is essential, such as in aerospace and automotive industries. However, aluminum couplings may have lower torque capacities compared to steel couplings.

3. Cast Iron:

Cast iron is used in couplings requiring high strength and wear resistance. It is commonly used in industrial machinery and heavy-duty applications.

4. Bronze:

Bronze is chosen for its excellent resistance to corrosion and its ability to handle high shock loads. Bronze couplings are often used in marine and hydraulics applications.

5. Brass:

Brass is used in couplings where electrical conductivity is required, such as in some electrical motor couplings.

6. Rubber and Elastomers:

Rubber and elastomers are used in flexible couplings to provide flexibility and vibration damping. They can absorb shocks and compensate for misalignments in various applications.

7. Polyurethane:

Polyurethane is commonly used in elastomeric couplings due to its excellent resilience, toughness, and resistance to wear.

8. Thermoplastics:

Thermoplastics like nylon and polyethylene are used in lightweight couplings with low torque requirements. They are known for their low friction and self-lubricating properties.

9. Composite Materials:

Composite materials, such as carbon fiber-reinforced polymers, are used in high-performance couplings where a balance of strength and weight is crucial.

10. Ceramic:

Ceramic couplings are used in extreme temperature and high-speed applications due to their excellent thermal and wear resistance properties.

The choice of material for a mechanical coupling depends on factors like the application’s operating conditions, load requirements, environmental factors, and cost considerations. Selecting the right material ensures that the coupling can perform reliably and efficiently in its intended application.

“`mechanical coupling

Are there any safety considerations when working with mechanical couplings?

Yes, working with mechanical couplings involves some safety considerations to prevent accidents and ensure the well-being of personnel. Here are important safety measures to keep in mind:

1. Lockout/Tagout Procedures:

Prior to working on machinery with mechanical couplings, implement lockout/tagout procedures to ensure that the equipment is isolated from its power source and cannot be accidentally energized during maintenance or repair activities.

2. Proper Training:

Ensure that personnel working with mechanical couplings receive proper training on safe handling, installation, and maintenance procedures. Adequate knowledge of coupling types, torque limits, and alignment techniques is crucial to avoid accidents.

3. Personal Protective Equipment (PPE):

Wear appropriate personal protective equipment, such as gloves, safety goggles, and hearing protection, when installing or inspecting couplings. This helps prevent injuries from sharp edges, rotating parts, or potential flying debris.

4. Follow Manufacturer’s Guidelines:

Always follow the manufacturer’s guidelines and instructions for the specific coupling being used. Proper installation torque, maintenance schedules, and safety precautions provided by the manufacturer should be strictly adhered to.

5. Inspections:

Regularly inspect the couplings for signs of wear, misalignment, or damage. Any worn or damaged couplings should be replaced promptly to prevent failures during operation.

6. Avoid Overloading:

Do not exceed the torque and speed limits specified by the manufacturer for the coupling. Overloading the coupling can lead to premature failure and potential safety hazards.

7. Preventive Maintenance:

Implement a preventive maintenance program to regularly check and service the couplings as recommended by the manufacturer. Proper maintenance can extend the life of the coupling and prevent unexpected failures.

8. Proper Storage:

Store spare couplings in a safe and dry environment, away from potential damage or exposure to harmful substances. Protect the couplings from corrosion and contamination.

9. Emergency Procedures:

Have emergency procedures in place in case of coupling failure or accidents. Employees should know how to respond to unexpected incidents safely.

10. Proper Lifting and Handling:

When installing or removing heavy couplings, use appropriate lifting equipment and techniques to prevent strain or injuries.

By following these safety considerations, workers can reduce the risk of accidents and ensure a safe working environment when dealing with mechanical couplings.

“`mechanical coupling

What are the key differences between rigid and flexible mechanical couplings?

Rigid and flexible mechanical couplings are two main types of couplings used in various engineering applications. They differ significantly in their design and capabilities, each offering distinct advantages and limitations:

1. Design and Construction:

Rigid Couplings: Rigid couplings are solid and inflexible, typically made from materials like steel or aluminum. They have a compact design and provide a direct, non-flexible connection between the shafts.

Flexible Couplings: Flexible couplings are designed to provide some degree of flexibility between the connected shafts. They often consist of elements made from elastomers, rubber, or flexible materials that can bend or deform.

2. Misalignment Compensation:

Rigid Couplings: Rigid couplings are not designed to accommodate misalignment between the shafts. Precise alignment is critical for their effective operation.

Flexible Couplings: Flexible couplings can compensate for axial, radial, and angular misalignments between the shafts, allowing them to remain connected even when not perfectly aligned.

3. Torque Transmission:

Rigid Couplings: Rigid couplings provide an efficient and direct transfer of torque between the shafts. They are ideal for high-torque applications.

Flexible Couplings: Flexible couplings transmit torque between the shafts while allowing for some torsional flexibility. The torque transmission may not be as efficient as in rigid couplings, but they are suitable for applications with moderate torque requirements.

4. Vibration Damping:

Rigid Couplings: Rigid couplings do not have inherent vibration damping properties.

Flexible Couplings: Flexible couplings can dampen vibrations and shocks caused by imbalances or dynamic loads, reducing wear on connected components and enhancing system stability.

5. Applications:

Rigid Couplings: Rigid couplings are commonly used in applications where precise alignment is critical, such as in machine tools, gearboxes, and other systems requiring high precision.

Flexible Couplings: Flexible couplings find applications in various industries, including pumps, compressors, conveyor systems, automotive powertrains, and wherever misalignment compensation or vibration absorption is needed.

6. Maintenance:

Rigid Couplings: Rigid couplings generally require less maintenance due to their solid and simple design.

Flexible Couplings: Flexible couplings may require occasional maintenance, such as checking and replacing the flexible elements to ensure proper functioning.

In summary, the choice between rigid and flexible couplings depends on the specific requirements of the application. Rigid couplings offer excellent torque transmission and precision but require precise alignment. Flexible couplings accommodate misalignment and dampen vibrations, making them suitable for a wider range of applications but may have slightly lower torque transmission efficiency compared to rigid couplings.

China Best Sales Flexible Standard Mechanical Jaw Coupling  China Best Sales Flexible Standard Mechanical Jaw Coupling
editor by CX 2023-09-27