
1. Understanding Explosion-proof Shaft Couplings:
Explosion-proof shaft couplings (ATEX couplings) are a type of connection used to prevent explosions in hazardous environments. They are designed to prevent the transmission of flames and gases in drive systems, such as shaft drive systems in chemical plants, oil refineries, power plants, gas production plants, and other industrial applications. Characteristics of explosion-proof shaft couplings include heat resistance, high pressure resistance, explosion resistance, and the ability to provide flexible shaft movement while maintaining safety in hazardous work environments.
2. Requirements for ATEX-Certified Shaft Couplings:
ATEX is a safety standard of the European Union for equipment and the protection of equipment used in hazardous environments. It applies to devices used in environments at risk of explosion, such as mines, chemical plants, or waste treatment plants. Equipment must meet strict safety requirements, not produce sparks, ignition sources, or sparks.
To achieve ATEX standards, shaft couplings need to be designed and manufactured according to specific requirements. These requirements include:
– Material requirements: Couplings need to be made of non-conductive and non-static materials. Typically, explosion-proof shafts are made of stainless steel or anti-static plastic.
– Structural requirements: Couplings are designed to prevent flames and sparks from collisions between components. ATEX-compliant shaft couplings often have a tight design with sealed components to ensure no explosive gas mixtures can penetrate inside.
– Component requirements: Couplings need to use explosion-proof components, including bearings, oil protection, and other parts to ensure safety in hazardous environments.
ATEX-certified shafts will be marked and certified for use in potentially explosive hazardous environments.
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View more product “Elastomer Jaw Couplings TNM H“
3. Structural Features of Ringfeder TNM H Shaft Coupling:
– The Ringfeder TNM H Shaft Coupling (Elastomer Jaw Coupling TNM H) is manufactured by Ringfeder/Germany.
– Ringfeder TNM H complies with the ATEX standard (2014/34/EU) for explosion protection.
– The coupling comes in 44 different sizes.
– Bore diameter d1: 30-150 mm; d2: 30-150 mm.
– Outer diameter D1: 67-330 mm.
– Overall length L: 160-570 mm.
– Maximum rotational speed: 2,000-5,000 RPM.
– Torque:
+ TKN Pb72: 22-6,400 Nm.
+ TKN Pb82: 35-9,900 Nm.
– Operating environment: from -30°C to +100°C.
– The coupling is torsionally flexible, compensating for shaft misalignment, axial and radial loads.
– Intermediate load ring in compression.
– Shock-absorbing rubber buffer rings available in different hardness levels of 72 Shore A and 82 Shore A.
– The rubber shock absorbers are electrically conductive, preventing unwanted static charges.

View more product “Ringfeder TNR Coupling is used for generators and diesel engines according to SAE J 620 Standards“
4. Applications of Ringfeder TNM H Shaft Coupling in Industry:
The Ringfeder TNM H shaft coupling consists of 2 hubs and shock-absorbing rubber. With its compact design, the coupling is widely used in factories, especially in those with high explosion potential.
When operating at high speeds, the two coupling shafts may collide, creating significant frictional forces and potentially causing explosions, especially in high-temperature environments. However, the Ringfeder TNM H is coated with a layer of paint, so when in operation, the collisions and friction between the two coupling shafts are reduced, ensuring safe operation in factories.
Pump shaft couplings use high-quality shock-absorbing rubber to reduce dangerous torsional vibrations and noise. They compensate for shaft misalignment, angular misalignment, parallel misalignment, and axial misalignment of connected machines.
As a result, these couplings are widely used in flammable environments such as oil refineries, oil and gas exploration, mining, cement production, pump applications, motor gearboxes, etc.
The TNM H shaft coupling also has various applications in industry. It is commonly used in pneumatic engine drive systems, trucks, shipbuilding, where a sturdy connection between shaft components is essential. Additionally, it can be used in various industrial machinery applications such as milling machines, lathes, presses, and printers.
In summary, the TNM H Elastomer Jaw Coupling is an effective solution for connecting shaft components in industrial applications. It provides a sturdy connection and ensures safe and efficient power transmission.
View more product “Elastomer Jaw Couplings TNM E“
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5. Where to buy genuine Ringfeder TNM H shaft coupling at competitive prices:
For authentic Ringfeder TNM H shaft coupling at competitive prices, you can visit Dai Hong Phat, the leading supplier in Vietnam. With 15 years of industry experience, we have established partnerships with numerous renowned global brands.
Moreover, Dai Hong Phat is An Authorized Distributor for Ringfeder Products in Vietnam. Ringfeder is a world-renowned brand specializing in providing drive transmission equipment for various industries.
Rest assured, customers purchasing Ringfeder TNM H from Dai Hong Phat can be confident in the authenticity and quality of the products, with ample stock available.
To purchase shaft couplings, please contact our hotline at (+84)906 955 057, where our team is ready to assist you.
Contact Dai Hong Phat now for consultation!
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