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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Are there any industry standards or guidelines for designing and using spider couplings?

Yes, there are industry standards and guidelines that provide recommendations for designing, selecting, and using spider couplings in various mechanical systems. These standards help ensure the safe and reliable operation of spider couplings in industrial applications. Some of the relevant standards include:

• AGMA 9002-B15: This American Gear Manufacturers Association (AGMA) standard provides guidelines for the selection and application of flexible couplings, including spider couplings. It covers topics such as coupling types, misalignment, torque capacity, and lubrication.
• ISO 14691: This International Organization for Standardization (ISO) standard specifies methods for testing the torsional stiffness of flexible couplings, including spider couplings. It outlines procedures for determining the dynamic torsional stiffness and related parameters.
• API 671: This American Petroleum Institute (API) standard provides guidelines for special-purpose couplings used in petroleum, chemical, and gas industry services. It covers design, manufacturing, inspection, and testing requirements for couplings, including those with elastomeric elements.

While these standards offer valuable insights, it’s important to note that specific industry requirements and applications may influence the design and selection of spider couplings. Manufacturers, engineers, and designers should also consider factors such as torque, misalignment compensation, environment, and system dynamics when applying these standards to their designs. Adhering to industry standards ensures that spider couplings are properly designed, installed, and used to meet the intended performance and safety criteria.

How do you diagnose and troubleshoot issues related to spider couplings in machinery systems?

Diagnosing and troubleshooting issues with spider couplings requires a systematic approach to identify the root cause of the problem and implement effective solutions. Here are the steps to diagnose and troubleshoot spider coupling-related issues:

1. Visual Inspection: Conduct a thorough visual inspection of the coupling, looking for visible signs of wear, damage, or misalignment. Check for cracks, tears, and irregularities in the elastomeric spider.
2. Vibration Analysis: Use vibration analysis tools to assess vibration levels during operation. Elevated vibration can indicate issues such as misalignment, wear, or unbalanced loads.
3. Performance Monitoring: Monitor the performance of connected machinery or equipment. If there’s a decrease in torque transmission, efficiency, or overall performance, it could be attributed to coupling problems.
4. Alignment Check: Ensure proper alignment between shafts connected by the coupling. Misalignment can cause uneven load distribution and lead to coupling wear.
5. Temperature Monitoring: Monitor the temperature of the coupling during operation. Abnormal temperature increases could point to excessive friction and wear.
6. Inspect Fasteners: Check for loose or worn-out fasteners such as bolts, nuts, and screws that secure the coupling components. Loose fasteners can contribute to misalignment and coupling issues.
7. Inspect Lubrication: Check the lubrication of the coupling components. Inadequate or degraded lubrication can lead to increased friction and wear.
8. Consider Environmental Factors: Evaluate the operating environment for factors such as temperature variations, humidity, and exposure to chemicals. Environmental conditions can affect coupling performance.
9. Review Maintenance Records: Review the maintenance history and records of the coupling and connected equipment. This can provide insights into past issues and potential causes.

Based on the diagnostic results, appropriate troubleshooting steps can be taken. These might include adjusting alignment, replacing damaged components, re-lubricating, or replacing the elastomeric spider. Regular maintenance and prompt troubleshooting are essential to ensure the reliable and efficient operation of machinery systems utilizing spider couplings.

What are the advantages of using a spider coupling in industrial applications?

Spider couplings offer several advantages that make them a popular choice for various industrial applications. Here are the key advantages:

• Misalignment Compensation: Spider couplings can accommodate angular, axial, and parallel misalignments between connected shafts. This ability to compensate for misalignment reduces stress on components and extends equipment lifespan.
• Flexibility: The elastomeric spider provides flexibility that allows for slight movements between the shafts. This flexibility helps prevent excessive wear, reduces vibration transmission, and minimizes the risk of component failure.
• Vibration Dampening: The elastomeric material of the spider acts as a shock absorber, dampening vibrations generated by rotating machinery. This can lead to improved equipment performance, reduced noise, and enhanced operator comfort.
• Easy Installation: Spider couplings have a simple design with minimal components, making them easy to install and replace. Their design eliminates the need for precise alignment during installation, saving time and effort.
• Torque Transmission: Spider couplings efficiently transmit torque from one shaft to another, ensuring that power is effectively transferred between connected components.
• Minimal Maintenance: Spider couplings require minimal maintenance due to their self-lubricating and wear-resistant elastomeric material. This reduces downtime and maintenance costs for industrial machinery.
• Compact Design: Spider couplings have a compact and lightweight design, making them suitable for applications where space is limited. Their small size allows for easy integration into various systems.
• Cost-Effective: Spider couplings are relatively inexpensive compared to other coupling types, making them a cost-effective solution for a wide range of industrial applications.
• Electric Insulation: In applications where electrical isolation is important, spider couplings made from electrically insulating materials can prevent the transmission of electrical currents between shafts.
• Wide Range of Sizes: Spider couplings are available in various sizes and configurations to accommodate different shaft diameters and torque requirements.

Due to these advantages, spider couplings are commonly used in industries such as manufacturing, automation, packaging, material handling, and more, where flexibility, misalignment compensation, and efficient torque transmission are essential for optimal equipment performance.

editor by CX 2024-02-12