Product Description

Aluminium Plum Flexible Shaft Coupling(GB/T5272-2002) 

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.

 Basic Parameter And Main Dimension(GB/T5014-2003)

Type Nominal 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.

Product Display
 

♦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 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.

FAQ
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
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elastic coupling

Real-World Applications of Elastic Couplings

Elastic couplings find extensive use in various industries and applications where the reduction of vibration and shock is critical for performance, efficiency, and equipment longevity. Here are some examples:

  • Industrial Machinery: Elastic couplings are commonly employed in industrial machinery such as pumps, compressors, conveyors, and generators. They help minimize vibration and shock, ensuring smooth and reliable operation while protecting sensitive components.
  • Automotive Industry: In automotive applications, elastic couplings are used in drivetrains to dampen vibrations and shocks between the engine and the transmission. This enhances driving comfort, reduces noise, and prevents excessive wear on connected components.
  • Power Generation: Power generation equipment, including turbines and generators, benefits from elastic couplings that absorb torsional vibrations and shocks. This aids in maintaining stable power output and extending the lifespan of critical components.
  • Printing and Packaging: Printing presses and packaging machinery rely on elastic couplings to reduce vibrations during high-speed operations. This ensures precise printing and packaging while preventing damage to sensitive components.
  • Robotics and Automation: Elastic couplings are crucial in robotics and automation systems to mitigate vibrations and shocks that can affect accuracy and reliability. They enable precise movement control and consistent performance.
  • Medical Equipment: Medical devices such as MRI machines and X-ray equipment utilize elastic couplings to minimize vibrations that could impact image quality and precision during medical procedures.

These examples highlight how elastic couplings contribute to optimal performance, reduced maintenance, and increased equipment lifespan across diverse industries.

elastic coupling

Backlash in Elastic Couplings

Backlash refers to the amount of play or clearance between mating components in a mechanical system, particularly in elastic couplings. In an elastic coupling, backlash is the angular movement or rotation that occurs when there is a change in direction of the input shaft without an immediate response from the output shaft.

Backlash is a result of the elasticity and flexibility of the coupling’s components, such as the elastomer or other flexible elements. When the input direction changes, the elastic elements need to overcome their deformation before transmitting torque to the output shaft. This delay can lead to a temporary loss of motion and reduced precision in positioning applications.

Backlash can have a negative impact on the accuracy, repeatability, and overall performance of a machinery system. It can result in positioning errors, reduced responsiveness, and even potential damage to the system. Therefore, minimizing backlash is crucial in applications that require high precision and responsiveness.

Engineers can address backlash in elastic couplings by selecting couplings with lower compliance, optimizing the design to minimize the flexibility of the coupling elements, and using additional components like anti-backlash devices or preloaded mechanisms.

elastic coupling

Industries Using Elastic Couplings

Elastic couplings find extensive use in various industries due to their unique benefits:

  • Industrial Manufacturing: Elastic couplings are widely used in manufacturing equipment, conveyors, and assembly lines to maintain smooth operation and reduce vibrations.
  • Automotive: Automotive applications include engine components, powertrain systems, and vehicle suspension systems where flexibility and vibration dampening are crucial.
  • Power Generation: Elastic couplings are used in power generation equipment such as generators, turbines, and pumps to absorb torsional vibrations and enhance efficiency.
  • Aerospace: In aerospace applications, elastic couplings help dampen vibrations in critical components like aircraft engines and control systems.
  • Renewable Energy: Wind turbines and solar tracking systems benefit from elastic couplings to accommodate misalignments and vibrations caused by changing wind conditions.
  • Mining: Mining equipment such as crushers, conveyors, and screens utilize elastic couplings to handle varying loads and minimize shock loads.
  • Marine: Elastic couplings are used in marine propulsion systems and ship equipment to manage torque fluctuations and reduce vibrations.

These industries rely on elastic couplings to enhance performance, extend machinery lifespan, and minimize downtime due to vibrations, misalignments, and shock loads.

China Standard Plum-Shaped Elastic Coupling Model Lm Series (GB/T5272-2002)  China Standard Plum-Shaped Elastic Coupling Model Lm Series (GB/T5272-2002)
editor by CX 2024-04-03