Product Description

Car Industry

LTR is an expert in manufacturing all kinds of components for the automotive and motorcycle industry. We are IATF16949:2016 certified in order to fully satisfy the requirements of this industry.
Our production includes O rings, gaskets, seals, grommets, bellows, shock absorbers, dampers, cushions, sleeves, isolators, couplings, bushings, boots, covers, bumpers, pipes, hoses, tubes and many other pieces which are mainly manufactured in ACM, AEM, BR, CR, ECO, EPDM, FKM, FVMQ, HNBR, NBR, NR, SBR, SIR to meet the physical properties specified by ASTM D2000 and SAE J200 documents.
Products above are only examples to show Shun Tai Rubber’s core competences. All our rubber components are customised and made to order only. No standard product or catalogue is available.

Technical data

 

Compound:                                                                                  Colour:

Base Polymer:                                                                             Specification:

MAIN SPECIFICATION

MEASURE UNITS

REQUIRED VALUE

TESTED VALUE

TEST METHOD

HARDNESS

Sh-A

70+/-5

69

ASTM D2240

SPECIFIC GRAVITY

g/mm^3

\

1.176

TENSILE STRENGTH

Mpa

\

8.62

ASTM D412

ELONGATION

%

\

628.11

ASTM D412

Tear Strength

kg/cm

\

27.38

ASTM  D624

SPECIFICATION CHANGE

TEST MEANS

TIME h

TEMP ºC

HARDNESS

TENSILE STRENGTH

ELONG.AT BREAK

VOLUME

WEIGHT

required   test

required test

△ SHORE A

%

%

△%

△%

Products above are only examples to show Shui Tai Rubber’s core competences. All our rubber components are customized and made to order only.No standard product or catalogue is available.

Company Profile

We are a specialized rubber parts manufacturer with over 30 years of manufacturing experience. Our company mainly produces rubber parts for medical appliances, household appliances, electronic products, automobiles and toys.

Covering an area of 3500 square meters, we own over 200 staff and workers and our monthly production output reaches 30 tons.We have always stuck to the quality policy that customer is No.1 and quality comes first with scientific management, continuous improvement and sustained operation.

We insist in providing our clients with perfect products and best services. The products we produced can work in different areas and climates according to your specific requirements. We believe with stable and sincere cooperation and continuous improvement, our customers will enjoy the best service as stable supply, quality assurance and on-time delivery.

Products & Application

Production Flow Chart
Manufacturing Capabilities&Quality Control

FAQ

Q: Are you trading company or manufacturer ?
A: We are manufacturer.
Q: How long is your delivery time?
A: Generally 3-7 days for standard sealing products; and 15-30 days for big order and custom non-standard products.
Q: Do you provide free samples? 
A: Yes, we offer free sample while customer need pay for the freight charge.
Q: Which Payment way is workable?
A: Irrevocable L/C, Cash, PayPal, Credit card and T/T money transfers.
B: 30% T/T deposit in advance, 70% balance before shipment after presentation of ready cargo.
C: L/C ( Irrevocable LC at sight: Order amount over USD100,000)
Q: What is your standard packing?
A: All the goods will be packed by carton box and loaded with pallets. Special packing method can be accepted when needed.
Q: How to select the raw compound for my application?
A: With years of experience working with a variety of material, we can help select the material that will best suit your needs while keeping material costs in mind.
Q: Do you use any international standards for the rubber products?
A: Yes, we mainly use ASTM D2000 standard to define the quality of the rubber materials, tolerances as per ISO3302, ISO2768, etc.
Q: Can you supply different color materials?
A: Yes, we can produce custom CHINAMFG and silicone rubber products in different colors, the color code will be required in case of an order.
Q: What materials are available to produce from your side?
A: NBR, EPDM, SILICONE, (FKM), NEOPRENE(CR), NR, IIR, SBR, ACM, AEM, Fluorosilicone(FVMQ), FFKM, Liquid Silicone, Sponge, etc.

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Use of Jaw Couplings in Corrosive or Harsh Environments

Jaw couplings can be used in certain corrosive or harsh environments, but the choice of materials and design should be carefully considered to ensure the coupling’s performance and longevity. Here’s how jaw couplings can be utilized in such environments:

• Material Selection: For corrosive environments, it is essential to choose materials that can withstand the specific chemicals or substances present. Stainless steel or other corrosion-resistant alloys are commonly used in jaw couplings to ensure resistance to rust and corrosion. These materials protect the coupling from degradation caused by exposure to corrosive elements.
• Sealing Mechanism: In harsh environments where contaminants or particles may be present, proper sealing becomes crucial. Many jaw couplings have various sealing options to prevent foreign materials from entering the coupling and affecting its performance. Seals can help keep the coupling’s interior clean and protect it from damage due to harsh substances.
• Environmental Protection: In applications where the coupling is exposed to harsh elements, it might be beneficial to utilize protective covers or guards. These can shield the coupling from direct contact with abrasive materials or chemicals, further extending its lifespan in challenging conditions.
• Regular Maintenance: In corrosive or harsh environments, proper and regular maintenance is crucial. Cleaning and inspecting the coupling periodically can help identify any signs of wear or damage and allow for timely replacements or repairs, minimizing the risk of failure in service.

While jaw couplings can be used in certain corrosive or harsh environments, it is essential to assess the specific conditions and requirements of the application carefully. In some instances, alternative coupling types or additional protective measures may be more suitable to ensure optimal performance and longevity. Consulting with coupling manufacturers or engineering experts can provide valuable insights in selecting the most appropriate coupling for a given environment.

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.

Advantages of Using Jaw Couplings in Mechanical Systems

Jaw couplings offer several advantages in mechanical systems:

• Misalignment Compensation: Jaw couplings can tolerate angular, parallel, and axial misalignments between connected shafts, reducing the need for precise alignment during installation.
• Vibration Damping: The elastomeric spider in the jaw coupling absorbs shocks and vibrations, providing smoother operation and extending the life of connected equipment.
• Backlash-Free: Due to the tight fit between the jaws and the spider, jaw couplings are virtually backlash-free, enabling more accurate and responsive motion transfer.
• High Torque Capacity: Jaw couplings can handle high torque loads, making them suitable for a wide range of industrial applications.
• Easy Installation: With a simple design and few components, jaw couplings are easy to install and maintain.
• Cost-Effective: Compared to other types of couplings, jaw couplings are relatively cost-effective, providing reliable power transmission at a lower cost.
• Fail-Safe Design: In the event of a spider failure, the jaws can still maintain some torque transmission, allowing for limited operation and preventing sudden breakdowns.

Due to these advantages, jaw couplings are widely used in pumps, motors, fans, and various industrial machinery where misalignment, vibration, and torque transmission are critical factors.

editor by CX 2024-02-06