Product Description

Product Description

 

 

      Steel flexible joint is also called clamp, open expansion joint, steel flexible pipe joint. Steel flexible joint is a kind of pipe connection, reliable performance, easy to install products. At low pressure, by the elastic deformation of the sealing ring, to achieve the purpose of sealing; When the pressure increases, the medium acts on the sealing ring to play the role of self-sealing, and there is a gap between the pipe ends to compensate for the displacement and deflection of the pipe caused by thermal expansion and cold contraction.

The working temperature of the clamp joint is generally -30ºC-+130ºC. The medium property is weak acid, weak alkali and lubricating oil range can be applied. If beyond the above range can also provide our company with the nature of the medium parameters or optional parameters or optional specified rubber ring material. In addition to the connection function, the joint can also provide compensation, withstand axial force, provide Angle, reduce vibration wave, adapt to the change of foundation.

The advantages of clamp joint:

1 Clamp joint has good continuity, will not produce distortion, easy to achieve the ideal laying state.
2 Clamp pipe joint in a free state, do not bear the weight of the pipe, not subjected to external shear, especially DN200 pipe diameter, more must consider the weight of the pipe.
3. It is easy to keep the coaxial position when installing the clamp joint to ensure the uneven distribution of the radial clearance between the inner diameter of the pipe clamp and the outer diameter of the pipe. The rubber ring will be deformed under high pressure due to the large local clearance, which will affect the sealing effect and even destroy the rubber ring.
4. It is suitable for the application in the subsidence zone, which can reduce the Angle between the pipe segments caused by the subsidence of the support pier.
5 is conducive to pipeline maintenance. Turn the pipe, save labor and effort when changing the pipe.
 

Detailed Photos

 

 

 

 

Product Parameters

PN1.6/2.5/4.0/6.4MPa     KRHD
 

DN(mm) Dw(mm) Allowable  Angle
Φ
Installation  length
L   (mm)
Maximal length
(mm)
Fitting  bolt 
d×L    (mm)
80 89 17.90 100 110 M12*60
100 108 15.06 100 110 M14*60
125 133 13.05 105 115 M14*60
150 159 12.09 110 120 M14*60
175 194 10.51 110 120 M16*60
200 219 9.33 116 126 M16*75
225 245 8.36 122 132 M16*80
250 273 7.51 127 137 M18*90
300 325 6.32 130 140 M18*100
350 377 5.45 135 145 M18*100
400 426 4.80 140 150 M18*110
450 480 4.28 145 155 M18*110
500 530 3.88 150 160 M18*120
600 630 3.27 155 165 M18*120
700 720 2.86 160 170 M20*120
800 820 2.51 165 175 M20*130
900 920 2.24 170 180 M20*130
1000 1571 2.02 175 185 M20*130
1200 1220 1.69 180 190 M22*140
1400 1420 1.45 185 195 M22*140
1600 1620 1.27 190 200 M22*140
1800 1820 1.13 195 205 M22*150
2000 2571 1.01 200 210 M24*150
2200 2571 1.01 205 215 M24*150
2400 2420 1.01 210 220 M24*150
2600 2620 1.01 215 225 M24*160
2800 2830 1.01 220 230 M27*160
3000 3571 1.01 225 230 M27*160
3200 3220 1.01 230 240 M27*180

 
Datas above are only for reference,if you want to know more details, please click here to contact us.

 

Installation Instructions

 

1. Prepare groove pipe sections, fittings and accessories that meet the requirements.

2. Check whether the rubber sealing ring is damaged and put it on the end of a steel pipe.
3. There should be a certain gap between the end and both ends of the steel pipe close to the end and both ends of the pipe which has been         covered with rubber sealing ring. The clearance shall meet the standard requirements.
4.  Put the rubber seal ring on the end of another steel pipe, make the rubber seal ring in the middle of the interface, and apply lubricant on the same side.
5. Check the axis of the pipe.
6. Install upper and lower clamps on the outer side of rubber seal-ing ring at the interface position, and clip the collar convex edge into the groove.
7. Press the upper and lower clamp ears with hand force, tighten the collar of the clamp with a wooden hammer, and tighten the upper and lower clamps tightly.
8. At the clamp screw hole position, put on the studs and tighten the nuts evenly to prevent the rubber sealing ring from wrin-kling.
9. check  and  comfirm  that  the  collar  convex  edge  is  clamped  into  the  groove.
 

products application

 

 

Company Profile

 

         HangZhou Ruixuan pipeline equipment factory was founded in 1996.It  is an excellent  enterprise  specializing  in manufacturing  and selling pipe fittings.It’s located  in Xicun village ,HangZhou  city,ZheJiang province ,the concentrated  area  of pipeline equipment industry  in China.The company factory  is located  in Xicun town pipeline equipment industrial park.It covered an area of20000  square  meters.

         At present, the company has the production capacity of pipeline equipment with a maximum diameter of 4000mm, and its main products are: Steel expansion joint, flexible waterproof sleeve, large diameter flange, double flange force transfer expansion joint, large deflection loose sleeve compensation joint, spherical compensation joint, sleeve compensator, bellows compensator, non-metallic compensator, rubber expansion joint, DC medium no thrust sleeve compensator, flexible expansion pipe and other pipeline equipment. The annual production capacity is 30 million sets.

        The flexible telescopic pipe equipment is mainly used in the pipeline crossing different geological structures under different conditions and the application of pipe installation drop, reduce or avoid the impact of geological settlement and crustal activity on the pipeline, so that the construction unit can save more than 50% of the cost when purchasing the equipment. The rubber expansion joint series products of the company, the maximum production diameter of 3600mm, have been applied in millions of units of thermal power projects in China for many times, and have been praised by the users.

        The company passed ISO9001:2008 quality management system certification in 2009 and ISO14000:2004 environmental management system certification in 2009. The company has a strict quality control system, standard production process, standard factory inspection hand section, to ensure that every product meets the national standards and customer requirements.

       Business philosophy: responsible production of products, return the trust of customers; To build a community with a sense of belonging and appreciate employees’ contributions; Make a contribution to the society of enterprises, give back to the good times. HangZhou Ruixuan pipeline equipment factory is willing to work with friends from all walks of life hand in hand, mutual support, create a better future!

 

Certifications

 

 

FAQ

 

Q:Can you make the product as per client’s requirement?
A:Yes, we can make it with your exact requirement.

Q:What are your payment terms?
A:T/T (30% as deposit, the rest 70% will be paid before delivery), L/C at sight.

Q:Where is your nearest loading port?
A:ZheJiang , HangZhou or ZheJiang , China.

Q:How can you guarantee the quality or any warranty?
A:If any quality problems during use, all the products can be returned or according to consumer’s requests.

Q:Do you accept small quantity order?
A:Of course we do.

Q:And what is your shipment and delivery time?
A:By sea or air. Normally 7 to 14 Days for delivery, according to your order quantity.

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jaw coupling

Using Jaw Couplings in Precision Motion Control Systems

Jaw couplings are versatile mechanical couplings commonly used in various industrial applications for transmitting torque between two shafts. While they offer many benefits such as simplicity, cost-effectiveness, and ease of installation, they may not be the best choice for precision motion control systems that require extremely accurate and repeatable positioning. The following factors should be considered when using jaw couplings in precision motion control systems:

  • Backlash: Jaw couplings typically have some degree of backlash due to the clearance between the jaws and the spacers. This can introduce positional errors and limit the ability to achieve precise movements, especially in systems that require bidirectional positioning.
  • Angular and Parallel Misalignment: While jaw couplings can accommodate some degree of misalignment, precision motion control systems often require tight tolerances and minimal misalignment to achieve accurate positioning. In such cases, more rigid and flexible couplings, such as servo couplings or beam couplings, may be preferred.
  • Torsional Stiffness: In precision motion control, minimizing torsional wind-up and maintaining torsional stiffness is essential for precise and responsive movements. Jaw couplings may not provide the required level of torsional stiffness needed for high-performance motion control applications.
  • Resonance and Vibration: In precision motion systems, avoiding resonance and minimizing vibration is crucial for stability and accuracy. The damping characteristics of jaw couplings may not be sufficient to suppress vibrations and resonant frequencies, which can adversely affect performance.

While jaw couplings are widely used in general industrial applications, precision motion control systems often demand more specialized and precise coupling solutions. Some alternatives that are better suited for precision motion control applications include servo couplings, beam couplings, and disc couplings. These couplings offer higher torsional stiffness, lower backlash, and better overall performance for demanding motion control requirements.

When selecting a coupling for precision motion control, it is essential to consider the specific requirements of the application, including torque, speed, misalignment, and stiffness, to ensure the chosen coupling can meet the precision and performance demands of the system.

jaw coupling

What are the common signs of wear and failure in jaw couplings?

Jaw couplings are reliable components, but like any mechanical part, they can experience wear and eventually fail if not properly maintained or replaced when necessary. Here are some common signs of wear and failure to look out for in jaw couplings:

  • Excessive Vibration: Increased vibration during operation may indicate wear in the elastomer spider or misalignment between the coupling hubs. Excessive vibration can lead to further damage and should be addressed promptly to prevent more significant issues.
  • Abnormal Noise: Unusual noises, such as rattling, clanking, or squeaking sounds, can indicate wear, misalignment, or damage in the jaw coupling. A well-functioning jaw coupling should operate smoothly and quietly.
  • Visible Cracks or Damage: Inspect the jaw coupling regularly for any visible cracks, tears, or damage to the elastomer spider or coupling hubs. Cracks in the elastomer can lead to reduced torque transmission and compromise the coupling’s performance.
  • Loose or Displaced Spider: A loose or displaced elastomer spider may result from wear or improper installation. The spider should fit securely between the coupling hubs. Any sign of misalignment or gaps in the spider indicates potential wear or failure.
  • Increased Heat: Excessive heat generation in the jaw coupling could indicate high levels of friction or misalignment, leading to wear on the elastomer spider. Elevated temperatures can accelerate wear and shorten the coupling’s lifespan.
  • Shaft Misalignment: If you notice misalignment between the connected shafts, it can be a sign that the jaw coupling is no longer compensating for misalignment properly. This can lead to increased stress on the shafts and coupling components.
  • Reduced Performance: A jaw coupling nearing the end of its service life may experience reduced torque transmission and compromised rotational speed control. As the elastomer spider wears, the coupling’s ability to transmit torque efficiently diminishes.
  • Unexpected Downtime: Frequent unexpected shutdowns or downtime may indicate coupling failure. Sudden coupling failure can lead to costly equipment damage and unplanned production halts.

It is essential to conduct regular maintenance and inspections to detect these signs of wear and failure early. Preventive measures such as proper lubrication, alignment checks, and timely replacement of worn elastomer spiders can extend the life of the jaw coupling and prevent unexpected failures.

If any of these signs are observed, it is advisable to consult coupling manufacturers or maintenance professionals for a thorough assessment and appropriate corrective actions.

jaw coupling

Comparing Jaw Couplings to Other Types of Couplings in Performance

Jaw couplings offer certain advantages and disadvantages compared to other types of couplings, and their performance characteristics vary based on the specific application requirements. Here’s a comparison of jaw couplings with some commonly used coupling types:

  • Jaw Couplings vs. Gear Couplings: Jaw couplings are more economical and easier to install than gear couplings. They can handle misalignment to some extent, but gear couplings are better suited for high torque and high misalignment applications.
  • Jaw Couplings vs. Disc Couplings: Both jaw couplings and disc couplings provide some level of misalignment compensation, but disc couplings offer higher torque capacity and better torsional stiffness. Jaw couplings are generally more cost-effective for low to moderate torque applications.
  • Jaw Couplings vs. Oldham Couplings: Jaw couplings are torsionally stiffer than Oldham couplings, which means they provide more accurate torque transmission. However, Oldham couplings can accommodate higher misalignment and have no moving parts, making them suitable for some low-speed applications.
  • Jaw Couplings vs. Flexible Beam Couplings: Beam couplings are more flexible than jaw couplings and can handle higher misalignment. However, jaw couplings have a higher torque capacity and can dampen vibration better in certain conditions.

Ultimately, the choice of coupling depends on the specific needs of the application, including factors like torque requirements, misalignment, speed, and cost considerations. It’s essential to carefully evaluate the performance characteristics of different coupling types and select the one that best suits the demands of the mechanical system to ensure reliable and efficient power transmission.

China manufacturer 4 Jaw L75 Vitaulic Couple 32 Inches Electric Motor 10mm Rigid Couplings  China manufacturer 4 Jaw L75 Vitaulic Couple 32 Inches Electric Motor 10mm Rigid Couplings
editor by CX 2024-05-09