China best Double Sphere Ball Cast Ductile Iron Carbon Steel Rubber Expansion Flexible Bellows Joints Compensator Adaptor Coupling NBR CHINAMFG Pn10 16

Product Description

Product Description

 

 

       Double ball rubber joint can be divided into single ball, double ball, different diameter body, curved ball and wind pressure coil. A tubular rubber piece consisting of an inner and outer rubber layer, a cord layer and a traveller is vulcanized and formed and then loosely combined with a metal flange or a parallel joint.
 

Product Parameters

 

Double sphere rubber bellows coupling is generally consist of the inner and the outer rubber layer and fabric reinforced layer (the enhancement layer has a multilayer spreading cord fabric), vulcanization molded in high temperature and high pressure , then assembly together with rubber tube and metal flange or parallel joint sleeve.

 

No.    Name                                           Material

1    Inner and outer rubber             NR,NBR,EPDM etc

2    Frame                                     Nylon cord fabric

3    Pressuring ring                        Steel wire

4    Flange                                    Stainless steel or Carbon steel                                                                    galvanized
 

 

Nominal diameter DN Length
mm
Center diameter
of    the bolt
bolt hole diameter  bolt   quantity               Axial displacement Horizontal
displacement
(mm)
Deflexion angle
mm inch Extension(mm) Compression(mm) (a1+a2)°
50 2 165 125 18 4 30 50 45 35°
65 2 ½ 175 145 18 4 30 50 45 35°
80 3 175 160 18 8 35 50 45 35°
100 4 225 180 18 8 35 50 40 35°
125 5 230 210 18 8 35 50 40 35°
150 6 325 240 22 8 35 50 40 35°
200 8 325 295 22 8 35 50 40 35°
250 10 325 350 22 12 35 60 35 30°
300 12 325 400 22 12 35 60 35 30°

Technical Conditions
 

 

                  DN200-DN300(8-12)           DN50-DN150(2-6)
       JGD-A(1)                                   JGD-A(2)                         JGD-A(3)
workiing pressure
  MPa
          1(10)              1.6(16)                   2.5(25)
burst pressure
   MPa
          2(20)              3(30)                   4.5(45)
vacuum  degree
  KPa
        40(300)            53.3(400)                 86.7(650)
  applicable      temperature            -15~115ºC  specially  reachable  -30~250ºC  

applicable medium

 

            “Air,water,sea water,vacuum,hot water,oil,acid,alkali,etc.”        

Data above is only for reference, if  you want much more information, please contact us.

We have various types of molds and multiple sets rubber vulcanizing equipment, which can meet mass production and customization requirements.
 

Production process

 

 
 

products application

 

 This product is widely used in chemical industry, construction, water supply and drainage, petroleum, heavy and light industry, refrigeration, sanitation, plumbing, fire protection, electric power and other basic engineering.According to different materials can be made of acid resistance, alkali resistance, corrosion resistance, oil resistance, high temperature resistance, radiation resistance, wear resistance, aging resistance and other varieties, to adapt to a variety of media and the environment.We can also do pressure testing.

 

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 : Are you trading company or manufacturer?
A: We are manufacturer of rubber expansion joint,bellow, dismantling joint, dresser coupling, flange adapter and flange with more than 13-year experience.

Q: Do you have products catalog?
A: Yes, we have. Please tell me your email or instant messager, we will send our catalog.

Q: Can you provide drawings and technical data?
A: Yes, our professional technical department will design and provide drawings and technical data.

Q: Do you provide samples? Is it free or charged?
A: Yes, we can offer sample free but shipping charges covered by customer.

Q: How long is your delivery time?
A: Depends on QTY, but normally no more than 20 working days.

Q: Can the products be manufactuered by customer’s requirement?
A: Yes, the specifications stated above are the standard ones, we can design and manufacture as requirement. 

Q: Visting factory is allowed or not?
A: Yes, we welcome customers visiting our factory. Our factory is located HangZhou city,ZheJiang province,China mainland

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rubber coupling

Diagnosing and Troubleshooting Rubber Coupling Issues

Diagnosing and troubleshooting problems with rubber couplings in machinery systems involves a systematic approach:

  1. Visual Inspection: Check for signs of wear, cracking, or deformation in the rubber elements.
  2. Vibration Analysis: Monitor vibration levels using sensors to identify excessive vibrations or irregular patterns.
  3. Noise Assessment: Listen for unusual noises during operation, which could indicate misalignment or worn components.
  4. Temperature Check: Monitor the operating temperature of the coupling, as overheating might indicate issues.
  5. Alignment Check: Ensure proper alignment between connected shafts to prevent excessive stress on the coupling.
  6. Torque Measurement: Measure the transmitted torque to identify any discrepancies from the expected values.
  7. Dynamic Testing: Conduct dynamic tests with load variations to identify performance issues.
  8. Comparative Analysis: Compare coupling behavior to baseline performance data.

If any issues are identified, they should be promptly addressed through proper maintenance, realignment, or replacement of damaged components.

rubber coupling

Industry Standards and Guidelines for Rubber Couplings

There are no specific industry standards or guidelines that exclusively govern the design and application of rubber couplings. However, various general standards and engineering practices apply to flexible couplings, including rubber couplings:

  • ISO 14691: This standard provides guidelines for the installation, use, and maintenance of industrial flexible couplings, which include rubber couplings.
  • AGMA 9005: The American Gear Manufacturers Association (AGMA) standard provides information on selecting lubricants and lubrication methods for flexible couplings, ensuring proper performance and longevity.
  • API 671: This API standard specifies the requirements for special-purpose couplings used in petroleum, chemical, and gas industry services, which can include rubber couplings for specific applications.
  • Manufacturer Recommendations: Many rubber coupling manufacturers provide guidelines, specifications, and installation instructions for their products, helping users select the right coupling and use it correctly.

Since rubber couplings fall under the category of flexible couplings, engineers and designers can follow these broader standards and best practices while considering the specific characteristics and performance requirements of rubber couplings for their applications.

rubber coupling

Role of Rubber Flexibility in Accommodating Misalignment

Rubber couplings are designed with a flexible element, usually made of elastomers, that plays a crucial role in accommodating misalignment between connected shafts. The flexibility of the rubber element allows it to deform and absorb angular, axial, and radial misalignments, providing several benefits:

1. Angular Misalignment: When the input and output shafts are not perfectly aligned in terms of angle, the rubber element can flex and twist, allowing the coupling to transmit torque even when the axes are not parallel.

2. Axial Misalignment: Axial misalignment occurs when the shafts move closer together or farther apart along their axis. The rubber element can compress or extend, adjusting the distance between the shafts without hindering torque transfer.

3. Radial Misalignment: Radial misalignment refers to the offset between the centers of the shafts. The rubber element can bend in response to radial displacement, ensuring that the coupling remains operational while accommodating the offset.

This flexibility not only enables the rubber coupling to handle misalignment but also helps prevent excessive stress on the connected machinery. By absorbing shock loads and distributing forces, the rubber element reduces wear and tear on components and minimizes the risk of premature failure.

In essence, the rubber’s flexibility in the coupling acts as a buffer against misalignment-induced stresses, contributing to smoother operation, improved longevity, and reduced maintenance in mechanical systems.

China best Double Sphere Ball Cast Ductile Iron Carbon Steel Rubber Expansion Flexible Bellows Joints Compensator Adaptor Coupling NBR CHINAMFG Pn10 16  China best Double Sphere Ball Cast Ductile Iron Carbon Steel Rubber Expansion Flexible Bellows Joints Compensator Adaptor Coupling NBR CHINAMFG Pn10 16
editor by CX 2024-04-03