Elastomer Jaw Couplings RLES

Elastomer Jaw Couplings of the RINGFEDER^® RLES series provide a powerful and versatile solution for reliable shaft-to-shaft connection in a wide range of industrial applications. Based on the proven RATHI^® JAW-FLEX L, SW and RRS coupling types, they offer high operational reliability, effective vibration damping and long service life. The torsionally elastic, fail-safe and axially pluggable couplings reliably compensate for axial, radial and angular shaft misalignments while reducing shock loads, torsional vibrations and fluctuating loads within the drivetrain. Thanks to their backlash-free torque transmission, they contribute to smooth running characteristics and a high level of process reliability. To ensure optimal adaptation to different installation and service requirements, the series is available as type RLES L with elastomer spider, type RLES SW with radially removable elastic intermediate ring, and type RLES RRS with spacer and likewise radially removable elastic intermediate ring. Hubs and spacers are available in aluminum, sintered iron or cast iron, allowing application-specific optimization with regard to weight, performance and cost efficiency. Elastomer elements made of nitrile rubber, polyurethane or H-Trans are available in various shore hardnesses, enabling application-specific adjustment of damping and stiffness characteristics. Combined with their high resistance to numerous chemicals, they provide robust, low-wear coupling solutions for economical and low-maintenance operation.

You require CAD data for RINGFEDER^® RLES? Of course, we are more than happy to provide you with these. Contact us quickly and easily via our request form, by e-mail or using the "Need Help?" feature at the bottom right of this site.

Request

Benefits

FAQs

Downloads

Types

Your Contact to Us

You like to receive an offer, have specific questions, require technical support or you are interested in a customized solution? Our experts in Engineering and Sales are more than happy to assist you. We look forward to your inquiry! Because excellent solutions always start with excellent guidance.

Contact us quickly and easily via our request form, by e-mail or telephone, or also using the "Need Help?" feature at the bottom right of this site.

Request

Directly Contact Our Experts in Engineering & Sales | RINGFEDER®

Elastomer Jaw Couplings RLES: Your Benefits at a Glance | RINGFEDER®

RINGFEDER® RLES: Your Benefits at a Glance

Torsionally elastic, pluggable, fail-safe
Backlash-free, low wear and maintenance
Vibration and oscillation damping
Compensation of angular, radial and axial shaft misalignment
Nominal torques up to 6,500 Nm
Hubs and intermediate shafts made of either aluminum, sintered iron or cast iron
Highly resistant to many chemicals
Wide range of variants including types with intermediate shaft or radially removable elastic intermediate ring
Easily exchangeable elastic elements of various hardnesses

Images & Drawings

Elastomer Jaw Couplings RLES

Dimension Drawing RLES L

Dimension Drawing RLES SW

Dimension Drawing RLES RRS

Frequently Asked Questions (FAQs)

1. What applications is the series suitable for?

Elastomer Jaw Couplings of the RINGFEDER^® RLES series are suitable for industrial drives requiring backlash-free torque transmission, effective shock and vibration damping, and shaft misalignment compensation. Typical applications include pumps, compressors, gearboxes, conveyors, and other machinery used in drive systems and process technology. Different types, hub materials, and elastomers enable application-specific adaptation to the available installation space, torque, rotational speed, damping characteristics, and environmental conditions.

2. What are the differences between the RLES L, RLES SW, and RLES RRS types?

RLES L is a compact, two-piece type with an elastomer spider for general drive applications. RLES SW features a radially removable elastic intermediate ring that can be inspected and replaced without axially moving the connected machinery. RLES RRS combines this maintenance-friendly principle with a spacer and is therefore particularly suitable for applications involving larger shaft distances. Depending on the type, the nominal torque reaches up to 1,920 Nm for RLES L, 6,500 Nm for RLES SW, and 820 Nm for RLES RRS.

3. What shaft misalignments can be compensated for?

Couplings of the RINGFEDER^® RLES series can compensate for axial, radial, and angular shaft misalignments within the permissible limits specified for the respective size and type. This allows them to accommodate installation inaccuracies and operationally induced displacements while helping to reduce loads on adjacent drive components. At the same time, the torsionally elastic couplings dampen shock loads, torsional vibrations, and fluctuating loads. The permissible misalignment values must not be exceeded and generally cannot be combined at their respective maximum values. The technical data and operating conditions of the specific application therefore always need to be considered.

4. Which hub and elastomer materials are available?

Depending on the size and type, hubs and spacers are available in aluminum, sintered iron, or cast iron. The elastic elements are available in nitrile rubber, polyurethane, or H-Trans and in different shore hardnesses. These options allow parameters such as weight, torque capacity, torsional stiffness, and damping characteristics to be adapted to the application. The elastomers offer high resistance to numerous chemicals. However, compatibility with the specific medium should always be verified with consideration of its concentration, temperature, and exposure time.

5. What maintenance effort is required?

Elastomer Jaw Couplings of the RINGFEDER^® RLES series require no lubrication and are generally low-maintenance. However, depending on the operating and environmental conditions, the elastic elements are subject to natural wear and should be regularly inspected for damage, deformation, and aging. With RLES SW and RLES RRS, the elastic intermediate ring can be removed and replaced radially without axially moving the motor, gearbox, or driven machine. This simplifies inspection and replacement, shortens maintenance work, and helps reduce system downtime.

6. How is the appropriate coupling selected?

The main parameters to consider when sizing the coupling include nominal and peak torque, operating speed, shaft and bore diameters, load profile, expected shaft misalignments, ambient temperature, chemical influences, available installation space, and maintenance accessibility. The elastomer material and shore hardness additionally determine the damping and stiffness characteristics. RLES L is suitable as a compact standard solution, RLES SW facilitates radial elastomer replacement, and RLES RRS accommodates larger shaft distances. Selection should always be based on the technical data and appropriate operating factors, rather than on the nominal drive torque alone.