Highly flexible couplings are essential for industrial machinery and are designed for asymmetrically operating machines and non-uniform torque specialized applications. FLENDER, a leading name in the industry, comes into play with its three remarkable types of Elpex couplings: ELPEX-S Rubber Disk Couplings, ELPEX-B Tire Couplings, and ELPEX Flexible Ring Couplings. In this article, we'll discuss the features and benefits of Flender's highly flexible couplings.

ELPEX-S Rubber Disk Couplings

The ELPEX-S Rubber Disk Couplings serve as an exceptional solution for connecting machines with high torque fluctuations. With a nominal torque range spanning from TKN = 330 Nm to an impressive 63,000 Nm across 17 available sizes, these couplings exhibit remarkable flexibility and adaptability.

Due to its low torsional rigidity and damping properties, the ELPEX-S coupling excels in connecting machines with considerably non-uniform torque characteristics. The inside diameter of the rubber disk element is vulcanized on a flange, providing a secure connection. ELPEX-S couplings come in standard designs as a flange/shaft connection or shaft/shaft connection, with the added flexibility of the hub accommodating a taper bush.

Benefiting the user with insulation against torsional vibrations through linear torsion spring characteristics, these couplings offer versatile flange connection options, including SAE standards. The ease of plug-in assembly, even in challenging mounting positions, and the availability of types where the rubber disk element can be replaced without moving coupled machines make ELPEX-S couplings a practical choice. Furthermore, they provide overload protection for both the motor and the driven machine and hold certifications for use in potentially explosive environments, complying with 2014/34/EU (ATEX) standards.

ELPEX-B Tire Couplings

Moving on to the ELPEX-B Tire Couplings, these highly flexible and backlash-free tire couplings are designed to transmit torques without circumferential backlash in machines with non-uniform torque characteristics. With a nominal torque range from TKN = 24 Nm to 14,500 Nm and 15 sizes available, these couplings are not only resistant to wear but also maintenance-free.

Constructed with hubs made of high-quality cast iron or steel, the torque is transmitted by a flexible tire reinforced with a cord ply. ELPEX-B couplings provide compensation for very large shaft misalignments and are independent of the direction of rotation, making them suitable for reversing operations. The rubber tire can be easily replaced without the need to move the coupled machines, and the couplings allow for straightforward mounting on shafts using taper bushes.

ELPEX Flexible Ring Coupling

Lastly, the ELPEX Flexible Ring Couplings offer a highly flexible and backlash-free tire coupling solution for machines with considerably non-uniform torque characteristics. With a nominal torque range from TKN = 1,600 Nm to an impressive 90,000 Nm across 9 available sizes, these couplings demonstrate low torsional stiffness and damping properties.

Notable benefits of ELPEX Flexible Ring Couplings include suitability for high dynamic loads, excellent damping properties, and the availability of fail-safe options. Types with a fail-safe device between the flexible rings ensure emergency operation if the flexible rings are destroyed. These couplings are also available in shaft and flange coupling designs that comply with API 610 and API 671 standards.

Conclusion

In conclusion, Flender's ELPEX couplings provide versatile solutions for connecting machines with varying torque requirements. Whether it's the ELPEX-S Rubber Disk Couplings, ELPEX-B Tire Couplings, or ELPEX Flexible Ring Couplings, each type brings unique features and benefits, ensuring optimal performance in various machinery applications.

HVH Industrial Solutions is an authorized distributor of Flender and we offer a wide range of their couplings. We work closely with their engineering team to provide superior customer service and engineering support. 

If you have any questions, write to us via live chat or call or send us a quote request. The HVH team is always ready to help you.