Product Description
LMD Single Flange Type Plum Elastic Coupling(GB/T 5272-2002)
Product Description
♦Description
Plum elastic coupling has the characteristics of vibration reduction, buffering, small radial size, no lubrication, and easy maintenance. Suitable for starting frequency, positive and negative rotation, medium and low speed, medium and small power transmission.Not suitable for heavy loads and frequent replacement of elastic elements.
The structure of plum elastic coupling is simple. But when the elastic element is replaced, the half coupling shall be moved axially.LMS type easily replaces the elastic element without having to move the half coupling.
♦Basic Parameter and Main Dimension
| Type | Norminal torque(Tn/N·m) | Speed(Np) | Shaft hole diameter (d1,d2,dz) |
Length of the shaft hole | LO | D | D1 | Type of elastic parts | Mass | Rotary inertia | ||||||||||||||
| The hardness of elastic parts | LM | LMD, LMS | Y type | J1,Z type | L (recommend) |
LM | LMD | LMS | LMD, LMS | LM | LMD | LMS | LM | LMD | LMS | |||||||||
| a/HA | b/HD | L | ||||||||||||||||||||||
| 80+5 | 60+5 | r·min-1 | Mm | kg | kg·m2 | |||||||||||||||||||
| LM1 LMD1 LMS1 |
25 | 45 | 15300 | 8500 | 12,14 | 32 | 27 | 35 | 86 | 92 | 98 | 50 | 90 | MT1-a -b | 0.66 | 1.21 | 1.33 | 0.0002 | 0.0008 | 0.0013 | ||||
| 16,18,19 | 42 | 30 | ||||||||||||||||||||||
| 20,22,24 | 52 | 38 | ||||||||||||||||||||||
| 25 | 62 | 44 | ||||||||||||||||||||||
| LM2 LMD2 LMS2 |
50 | 100 | 1200 | 7600 | 16,18,19 | 42 | 30 | 38 | 95 | 101.5 | 108 | 60 | 100 | MT2-a -b | 0.93 | 1.65 | 1.74 | 0.0004 | 0.0014 | 0.0571 | ||||
| 20,22,24 | 52 | 38 | ||||||||||||||||||||||
| 25,28 | 62 | 44 | ||||||||||||||||||||||
| 30 | 82 | 60 | ||||||||||||||||||||||
| LM3 LMD3 LMS3 |
100 | 200 | 10900 |
6900 | 20,22,24 | 52 | 38 | 40 | 103 | 110 | 117 | 70 | 110 | MT3-a -b | 1.41 | 2.36 | 2.33 | 0.0009 | 0.0571 | 0.0034 | ||||
| 25,28 | 62 | 44 | ||||||||||||||||||||||
| 30,32 | 82 | 60 | ||||||||||||||||||||||
| LM4 LMD4 LMS4 |
140 | 280 | 9000 |
6200 | 22,24 | 52 | 38 | 45 | 114 | 122 | 130 | 85 | 125 | MT4-a -b | 2.18 | 3.56 | 3.38 | 0.002 | 0.005 | 0.0064 | ||||
| 25,28 | 62 | 44 | ||||||||||||||||||||||
| 30,32,35,38 | 82 | 60 | ||||||||||||||||||||||
| 40 | 112 | 84 | ||||||||||||||||||||||
| LM5 LMD5 LMS5 |
350 | 400 | 7300 |
5000 | 25,28 | 62 | 44 | 50 | 127 | 138.5 | 150 | 105 | 150 | MT5-a -b | 3.60 | 6.36 | 6.07 | 0.005 | 0.0135 | 0.0175 | ||||
| 30,32,35,38 | 82 | 60 | ||||||||||||||||||||||
| 40,42,45 | 112 | 84 | ||||||||||||||||||||||
| LM6 LMD6 LMS6 |
400 | 710 | 6100 |
4100 | 30,32,35,38 | 82 | 60 | 55 | 143 | 155 | 167 | 185 | 185 | MT6-a -b | 6.07 | 10.77 | 10.47 | 0.0114 | 0.0329 | 0.0444 | ||||
| 40,42,45,48 | 112 | 84 | ||||||||||||||||||||||
| LM7 LMD7 LMS7 |
630 | 1120 | 5300 | 3700 | 35*,38* | 82 | 60 | 60 | 159 | 172 | 185 | 205 | 205 | MT7-a -b | 9.09 | 15.30 | 14.22 | 0.5712 | 0.0581 | 0.571 | ||||
| 40*,42*,45,48,50,55 | 112 | 84 | ||||||||||||||||||||||
| LM8 LMD8 LMS8 |
1120 | 2240 | 4500 | 3100 | 45*,48*,50,55,56 | 112 | 84 | 70 | 181 | 195 | 209 | 170 | 240 | MT8-a -b | 13.56 | 22.72 | 21.16 | 0. 0571 | 0.1175 | 0.1493 | ||||
| 60,63,65 | 142 | 107 | ||||||||||||||||||||||
| LM9 LMD9 LMS9 |
1800 | 3550 | 3800 | 2800 | 50*,55*,56* | 112 | 84 | 80 | 208 | 224 | 240 | 200 | 270 | MT9-a -b | 21.40 | 34.44 | 30.70 | 0.1041 | 0.2333 | 0.2767 | ||||
| 60,63,65,70,71,75 | 142 | 107 | ||||||||||||||||||||||
| 80 | 172 | 132 | ||||||||||||||||||||||
| LM10 LMD10 LMS10 |
2800 | 5600 | 3300 | 2500 | 60*,63*,65*,70,71,75 | 142 | 107 | 90 | 230 | 248 | 268 | 230 | 305 | MT10-a -b | 32.03 | 51.36 | 44.55 | 0.2105 | 0.4594 | 0.5262 | ||||
| 80,85,90,95 | 172 | 132 | ||||||||||||||||||||||
| 100 | 212 | 167 | ||||||||||||||||||||||
| LM11 LMD11 LMS11 |
4500 | 9000 | 2900 | 2200 | 71*,71*,75* | 142 | 107 | 100 | 260 | 284 | 308 | 260 | 350 | MT11-a -b | 49.52 | 81.30 | 70.72 | 0.4338 | 0.9777 | 1.1362 | ||||
| 80*,85*,90,95 | 172 | 132 | ||||||||||||||||||||||
| 100,110,120 | 212 | 167 | ||||||||||||||||||||||
| LM12 LMD12 LMS12 |
6300 | 12500 | 2500 | 1900 | 80*,85*,90*95 | 172 | 132 | 115 | 297 | 321 | 345 | 300 | 400 | MT12-a -b | 73.45 | 115.53 | 99.54 | 0.8205 | 1.751 | 1.9998 | ||||
| 100,110,120,125 | 212 | 167 | ||||||||||||||||||||||
| 130,140,150 | 252 | 202 | ||||||||||||||||||||||
| LM13 LMD13 LMS13 |
11200 | 2000 | 2100 | 1600 | 90*,95* | 172 | 132 | 125 | 323 | 348 | 373 | 360 | 460 | MT13-a -b | 103.86 | 161.79 | 137.53 | 1.6718 | 3.667 | 3.6719 | ||||
| 100*,110*,120*,125* | 212 | 167 | ||||||||||||||||||||||
| 130,140,150 | 252 | 202 | ||||||||||||||||||||||
| LM14 LMD14 LMS14 |
12500 | 25000 | 1900 | 1500 | 100*,110*,120*,125* | 212 | 167 | 135 | 333 | 358 | 383 | 400 | 500 | MT14-a -b | 127.59 | 196.32 | 165.25 | 2.499 | 4.8669 | 5.1581 | ||||
| 130*,140*,150 | 252 | 202 | ||||||||||||||||||||||
| 160 | 302 | 242 | ||||||||||||||||||||||
NOTE:
1. Mass and rotary inertia are the approximation calculated according to the recommended minimum axial hole.
2. Diameter of shaft hole with * can be used for Z – type shaft hole.
3. a.b is the code for 2 different materials and the hardness of elastic parts.
Other products
♦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 |
Company Profile
♦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 service
♦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 the new model when there is new cars in the market.
5. Quality Control
Every step should be a special test by Professional Staff according to the standard of ISO9001 and TS16949.
FAQ
♦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 the customers with customized artworks in 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 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 1 pcs.
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: T/T.
♦Contact Us
Web: huadingcoupling
Add: No.11 HangZhou Road,Chengnan park,HangZhou City,ZheJiang Province,China
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Usage of Jaw Couplings for Motor-to-Shaft and Shaft-to-Shaft Connections
Jaw couplings are versatile components that can be used for both motor-to-shaft and shaft-to-shaft connections in mechanical power transmission systems. Their design and features make them suitable for various applications:
- Motor-to-Shaft Connection: When connecting a motor to a driven shaft, jaw couplings are commonly used to transmit torque from the motor to the driven equipment. The motor’s shaft is inserted into one side of the jaw coupling, and the driven shaft is inserted into the other side. The elastomeric spider element in the coupling provides a flexible connection that accommodates misalignment and dampens vibrations, ensuring smooth power transmission from the motor to the driven shaft.
- Shaft-to-Shaft Connection: In cases where two shafts need to be connected directly, without a motor or other driving element, jaw couplings can be used for shaft-to-shaft connections. Both shafts are inserted into the respective sides of the jaw coupling, and the elastomeric spider element bridges the gap between them. This enables torque transfer between the two shafts while compensating for any misalignment that may exist.
Whether used for motor-to-shaft or shaft-to-shaft connections, jaw couplings offer the same advantages, including misalignment compensation, vibration dampening, and backlash-free operation (depending on the design). These features make them suitable for various applications across different industries, where reliable and efficient power transmission is essential.
How does a jaw coupling help in power transmission efficiency?
A jaw coupling plays a significant role in enhancing power transmission efficiency in mechanical systems. It achieves this by incorporating several design features that minimize energy losses and maximize the transfer of power from one shaft to another. Here are some ways in which a jaw coupling helps improve power transmission efficiency:
- Mechanical Flexibility: Jaw couplings utilize a flexible elastomer spider as the connecting element between the two shafts. This elastomer spider allows for a certain degree of angular and parallel misalignment between the shafts without imposing significant additional loads on the connected equipment. The mechanical flexibility of the elastomer helps reduce the generation of excess heat and vibration, thereby optimizing power transmission efficiency.
- Vibration Damping: The elastomer spider in a jaw coupling also acts as a vibration-damping element. It absorbs and dissipates vibrations generated during the operation of rotating machinery. By dampening vibrations, the coupling reduces energy losses due to mechanical oscillations, which can otherwise decrease the overall power transmission efficiency.
- Shock Absorption: In addition to damping vibrations, jaw couplings can handle sudden shocks and impacts that may occur during equipment operation. The elastomer spider’s ability to absorb shocks prevents sudden force spikes from propagating through the system and helps maintain steady power transmission, thus improving overall efficiency.
- Reduced Friction: The design of jaw couplings minimizes sliding friction between the shafts and the coupling components. This reduced frictional resistance results in lower energy losses and less heat generation during power transmission, contributing to higher efficiency in the system.
- Torsional Wind-Up Compensation: When torque is transmitted through the shafts, there can be some degree of torsional wind-up or twist in the coupling. Jaw couplings can compensate for this torsional movement, ensuring that the transmitted power reaches the intended equipment without significant losses due to torsional deformation.
- Simple and Robust Design: Jaw couplings have a simple construction, typically consisting of two hubs and an elastomer spider. This straightforward design reduces the number of moving parts and potential points of failure, resulting in a robust and reliable coupling. A reliable coupling minimizes the risk of power losses due to mechanical inefficiencies or breakdowns, thus improving overall power transmission efficiency.
In summary, a jaw coupling enhances power transmission efficiency by providing mechanical flexibility, vibration damping, shock absorption, reduced friction, and torsional wind-up compensation. Its simple and robust design further contributes to reliable power transmission. When selecting a jaw coupling for a specific application, it is essential to consider factors such as torque requirements, operating conditions, and misalignment compensation to ensure optimal efficiency and performance in the system.
Materials Used in Manufacturing Jaw Couplings
Jaw couplings are commonly made from various materials, each offering different properties and suitability for specific applications. Some of the commonly used materials include:
- Polyurethane (PU): PU jaw couplings are known for their flexibility, high elasticity, and resistance to abrasion. They are ideal for applications requiring vibration dampening and shock absorption.
- Aluminum: Aluminum jaw couplings are lightweight, corrosion-resistant, and have good thermal conductivity. They are commonly used in low-to-medium torque applications.
- Steel: Steel jaw couplings offer high strength and durability, making them suitable for heavy-duty applications with high torque requirements.
- Stainless Steel: Stainless steel jaw couplings are resistant to corrosion and are often used in applications where there is exposure to moisture, chemicals, or harsh environments.
- Bronze: Bronze jaw couplings are known for their excellent wear resistance and low coefficient of friction, making them suitable for applications with high-speed and low lubrication.
- Acetal: Acetal jaw couplings provide good chemical resistance and low moisture absorption, making them suitable for applications where chemical exposure is a concern.
- Nylon: Nylon jaw couplings offer good strength, flexibility, and resistance to wear and chemicals, making them suitable for various industrial applications.
The choice of material depends on factors such as torque requirements, environmental conditions, operating speeds, and budget considerations. Engineers and designers select the appropriate material to ensure that the jaw coupling can perform optimally and withstand the demands of the application.
editor by CX 2024-04-24
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