Product Description
LM Basic 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 is easy to replace the elastic element without having to move the half coupling.
♦Detailed Pictures
♦Basic Parameter and Main Dimension
| Type | Norminal torque(Tn/N·m) | Speed(Np) | Shaft hole diameter (d1,d2,dz) |
Length of shaft hole | LO | D | D1 | Type of elastic parts | Mass | Rotary inertia | ||||||||||||||
| 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 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
/* 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
Impact of Jaw Coupling on the Overall Reliability of Connected Equipment
A jaw coupling plays a critical role in enhancing the overall reliability of connected equipment in mechanical power transmission systems. Its design and features contribute to various aspects that positively influence reliability:
- Misalignment Compensation: One of the key benefits of jaw couplings is their ability to accommodate misalignment between shafts. By allowing for angular, parallel, and axial misalignment, the jaw coupling reduces stress on connected equipment. It helps prevent excessive forces and shaft bending that can lead to premature wear or failure.
- Shock Absorption: The elastomeric spider element used in jaw couplings acts as a shock absorber. It dampens vibrations and shock loads, protecting connected equipment from sudden jolts or impacts that could cause damage or fatigue over time.
- Torsional Damping: Jaw couplings provide torsional damping, reducing the risk of torsional vibrations that can negatively affect equipment performance. By minimizing vibrations, the coupling contributes to smoother operation and extended equipment life.
- Fail-Safe Design: In the event of a spider failure, jaw couplings often offer a fail-safe design. The spider is a replaceable component, and its failure does not typically lead to catastrophic failure of the coupling or connected equipment. This characteristic enhances the overall system reliability and simplifies maintenance.
- Low Maintenance: Jaw couplings are relatively low maintenance compared to other coupling types. The elastomeric spider does not require lubrication and has a longer service life compared to metallic couplings. This reduces the frequency of maintenance activities, minimizing downtime and increasing equipment reliability.
- Backlash-Free Operation: Some jaw couplings are designed to provide backlash-free operation, ensuring accurate motion transmission without play or clearance. This feature is particularly important in precision systems, preventing positioning errors and contributing to consistent performance.
- Corrosion Resistance: Jaw couplings are available in various materials, including stainless steel and corrosion-resistant alloys. Choosing the appropriate material for the specific environment ensures the coupling’s longevity and reliability, even in harsh operating conditions.
- Reduced Vibration Transfer: By isolating vibrations, jaw couplings prevent the transfer of harmful vibrations between connected equipment. This safeguard is crucial in delicate systems where excessive vibrations could lead to malfunction or damage.
Overall, a well-chosen and properly installed jaw coupling positively impacts the reliability of connected equipment. It helps prevent mechanical stress, dampens vibrations, and provides a reliable connection between shafts, contributing to the smooth and efficient operation of the entire mechanical system.
What are the common installation mistakes to avoid when using jaw couplings?
Proper installation of jaw couplings is crucial to ensure their reliable and efficient operation. Avoiding common installation mistakes can prevent premature wear, misalignment, and potential equipment damage. Here are some of the most common installation mistakes to avoid when using jaw couplings:
- Incorrect Coupling Size: Using the wrong size of jaw coupling for the application can lead to various issues. Undersized couplings may not handle the required torque, leading to early failure, while oversized couplings may result in increased rotational inertia and decreased system performance. Always ensure that the selected coupling is appropriate for the torque and power requirements of the equipment.
- Misalignment: Improper alignment of the shafts during coupling installation can cause excessive forces and premature wear on the coupling components. Angular, parallel, and axial misalignments should be minimized and kept within the manufacturer’s recommended tolerances. Consider using alignment tools and techniques to achieve accurate shaft alignment.
- Over-Tightening: Applying excessive torque when tightening the coupling elements can lead to deformation of the elastomer spider or damage to the hubs. Over-tightening can also increase friction and cause premature wear. Follow the manufacturer’s specified torque values during installation to ensure proper clamping without causing damage.
- Lack of Lubrication: Some jaw couplings require lubrication to reduce friction and wear. Neglecting to lubricate the coupling elements can lead to increased friction, higher operating temperatures, and reduced coupling life. Follow the manufacturer’s guidelines regarding lubrication intervals and types of lubricants to use.
- Failure to Inspect Components: Before installation, carefully inspect all coupling components for any signs of damage, wear, or defects. Using a damaged or worn-out elastomer spider or other components can compromise the coupling’s performance and reliability. Replace any worn or damaged parts before installing the coupling.
- Improper Shaft End Preparation: Ensure that the shaft ends are clean, smooth, and free from burrs or imperfections before installing the coupling. Rough or uneven shaft surfaces can lead to misalignment and reduce coupling performance. Properly clean and prepare the shaft ends to ensure a secure and accurate fit.
- Not Following Manufacturer’s Guidelines: Each jaw coupling has specific installation instructions provided by the manufacturer. Failure to follow these guidelines can result in coupling failure or reduced performance. Always refer to the manufacturer’s installation manual and recommendations for proper installation procedures.
By avoiding these common installation mistakes, users can maximize the performance and longevity of jaw couplings in their applications. Proper installation ensures that the coupling operates efficiently, transmits power effectively, and reduces the risk of unexpected failures or downtime.
Handling Misalignment with Jaw Couplings
Jaw couplings are designed to handle certain degrees of misalignment between shafts. They are flexible couplings that can accommodate both angular and radial misalignment to some extent. The elastomeric element in the jaw coupling provides the necessary flexibility to compensate for misalignment while transmitting torque between the shafts.
Angular Misalignment: Jaw couplings can handle small amounts of angular misalignment, typically up to a few degrees. However, excessive angular misalignment should be avoided as it can lead to increased wear on the coupling and connected equipment.
Radial Misalignment: Similar to angular misalignment, jaw couplings can also tolerate small amounts of radial misalignment. The elastomeric material allows the coupling to flex and adjust to minor shaft misalignments.
It’s important to note that while jaw couplings are suitable for handling some degree of misalignment, the actual allowable misalignment depends on the specific design and material of the coupling. Therefore, it is essential to refer to the manufacturer’s specifications and guidelines for the particular jaw coupling being used in an application.
For applications with significant misalignment or where precise alignment is critical, other types of flexible couplings, such as beam couplings or disc couplings, may be more appropriate. Proper alignment and regular maintenance are key factors in ensuring the optimal performance and longevity of the jaw coupling and the connected machinery.
editor by CX 2024-03-07