Product Description
LMD Single Flange Type Plum Elastic Coupling(GB/T 5272-2002)
♦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 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 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
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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How does a spider coupling compare to other types of couplings, such as jaw couplings or gear couplings?
Spider couplings, jaw couplings, and gear couplings are all commonly used in mechanical systems for power transmission and misalignment compensation. Each type of coupling has its own unique characteristics and advantages. Here’s a comparison:
- Spider Couplings: Spider couplings, also known as flexible couplings or jaw/spider couplings, use an elastomeric spider to transmit torque and accommodate misalignment. They are known for their flexibility, vibration dampening, and ability to handle angular, radial, and axial misalignment. Spider couplings are suitable for a wide range of applications and are cost-effective solutions for moderate torque requirements and misalignment compensation.
- Jaw Couplings: Jaw couplings consist of two hubs with curved jaws that interlock and transmit torque. They are simple to install and provide a secure connection. However, jaw couplings are less effective in accommodating misalignment compared to spider couplings. They are suitable for applications with minimal misalignment and moderate torque transmission.
- Gear Couplings: Gear couplings use toothed gears to transmit torque between shafts. They are robust and capable of transmitting high torque while accommodating some misalignment. Gear couplings are often used in heavy-duty applications that require precise torque transmission and can tolerate limited misalignment.
When comparing these couplings, spider couplings stand out for their versatility in handling various types of misalignment and providing vibration dampening. Jaw couplings are simpler and suitable for applications with minimal misalignment, while gear couplings excel in heavy-duty applications with high torque requirements. The choice between these couplings depends on the specific requirements of the application, including torque, misalignment compensation, space limitations, and cost considerations.
What are the symptoms of spider coupling wear or deterioration, and how can they be identified?
Spider couplings, like other mechanical components, can experience wear and deterioration over time due to factors such as torque, misalignment, and environmental conditions. Identifying the symptoms of wear is crucial for maintaining coupling performance and preventing unexpected failures. Here are some common symptoms of spider coupling wear and deterioration:
- Vibration and Noise: Increased vibration or unusual noise during operation can indicate wear in the spider coupling. Excessive wear can lead to reduced dampening of vibrations and increased noise levels.
- Reduced Torque Transmission: If the coupling is no longer transmitting torque efficiently, it may indicate wear or damage to the elastomeric spider. Reduced torque transmission can result in decreased equipment performance.
- Visible Cracks or Tears: Inspect the elastomeric spider for visible cracks, tears, or signs of deformation. These issues can lead to uneven load distribution and compromised coupling function.
- Uneven Shaft Movement: Misalignment caused by wear can lead to uneven movement of connected shafts. This can be observed through irregular motion or wobbling during operation.
- Increased Heat Generation: If the coupling is generating more heat than usual, it may indicate excessive friction due to wear. Overheating can accelerate wear and affect coupling performance.
- Irregular Performance: If machinery or equipment connected by the coupling experiences irregular or unpredictable behavior, it could be a sign of coupling wear affecting torque transmission.
To identify these symptoms, regular visual inspections, vibration analysis, and performance monitoring are recommended. If any of these symptoms are observed, it’s advisable to replace the worn or damaged spider coupling with a new one. Routine maintenance and timely replacement can help ensure the continued reliability and performance of spider couplings in mechanical systems.
What factors should be considered when selecting a spider coupling for a specific application?
Choosing the right spider coupling for a specific application requires careful consideration of various factors to ensure optimal performance and reliability. Here are the key factors to consider:
- Torque Requirements: Determine the torque that the coupling needs to transmit between the shafts. Select a spider coupling that can handle the required torque without exceeding its limitations.
- Misalignment Compensation: Assess the type and degree of misalignment that the coupling needs to accommodate. Different spider coupling designs offer varying levels of misalignment compensation.
- Operating Conditions: Consider the operating environment, including temperature, humidity, and exposure to chemicals or contaminants. Choose a spider coupling with elastomeric material that can withstand these conditions.
- Shaft Diameters: Measure the diameters of the connected shafts. Ensure that the selected spider coupling matches the shaft sizes to achieve a secure and reliable fit.
- Space Limitations: Evaluate the available space for installing the coupling. Choose a compact spider coupling design that fits within the available dimensions.
- Shaft Speed: Determine the rotational speed of the shafts. Ensure that the selected spider coupling can handle the speed range without causing excessive wear or vibrations.
- Vibration Dampening: If vibration reduction is a priority, select a spider coupling with elastomeric material that offers effective vibration dampening properties.
- Electrical Isolation: In applications where electrical isolation is necessary, choose a spider coupling with electrically insulating properties to prevent current transmission between shafts.
- Chemical Compatibility: If the machinery operates with specific chemicals or fluids, ensure that the elastomeric material of the coupling is compatible with these substances.
- Cost Consideration: Evaluate the budget available for the coupling. Consider both the upfront cost and the potential savings from reduced maintenance and downtime.
- Manufacturer Reputation: Choose spider couplings from reputable manufacturers known for producing high-quality and reliable products.
- Application Type: Different industries and applications have unique requirements. Consider the specific demands of the application, such as pumps, compressors, conveyors, etc.
By carefully evaluating these factors, you can select a spider coupling that best matches the requirements of your application, ensuring efficient power transmission, misalignment compensation, and overall system performance.
editor by CX 2024-01-16