Regal Rexnord
Elastomeric Couplings
Regal Rexnord elastomeric couplings transmit torque through resilient rubber or urethane elements compressed between or bonded to metallic hubs, providing a torsionally soft, vibration - damping, and maintenance - free flexible connection between rotating shafts.Unlike metallic - flexing couplings that require lubrication or are subject to fretting wear, elastomeric couplings use the inherent damping properties of the polymer element to absorb shock loads, isolate vibration between driver and driven equipment, and accommodate misalignment through elastic deformation — all without any metal - on - metal wear surfaces.Plant engineers, HVAC system designers, and OEM machine builders select Regal Rexnord elastomeric couplings for applications where torsional vibration damping is critical(diesel engine - driven equipment, reciprocating compressors), where electrical isolation between shafts is required, or where the simplicity of a replaceable - element coupling that requires no lubrication matches the maintenance philosophy of distributed, hard - to - access equipment.Under the Jaure, Centa, and Euroflex brands, our elastomeric coupling portfolio spans jaw - type designs for general industrial duty, tire - type couplings for high - misalignment applications, pin - and - bush designs for large diesel - driven pumps and compressors, and custom - engineered solutions for wind - turbine generator drives and marine propulsion systems.With fail - safe designs that allow continued operation after element failure in many configurations, ATEX - certified anti - static elements, and element materials ranging from natural rubber to high - temperature urethane, Regal Rexnord elastomeric couplings provide the combination of torsional tuning, maintenance simplicity, and operational reliability that modern rotating equipment demands.
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Vibration Damping & Torsional Softness
Elastomeric elements absorb dynamic torque fluctuations, protect driven equipment from torsional resonances, and reduce gear - hammer noise in geared transmissions — critical for diesel - engine and reciprocating - compressor drivetrains.
Lubrication - Free, Zero - Wear Operation
No metal - metal contact, no lubrication points, and no wearing components beyond the elastomeric element itself — reducing maintenance to periodic visual inspection of the element condition.
Fail - Safe Design for Critical Services
Many designs transmit torque through interlocking jaw geometry that permits continued operation at reduced capacity after element failure, enabling controlled shutdown rather than sudden loss of drive.
Electrical Insulation Between Shafts
Elastomeric elements provide inherent electrical isolation that prevents the flow of stray shaft currents through bearings — protecting motors and driven equipment from electrical - erosion bearing damage.
Easy Visual Element Inspection
Element condition can be assessed quickly by maintenance rounds personnel without tools or coupling disassembly, supporting condition - based element replacement during planned outages.
ATEX - Certified Anti - Static Formulations
Conductive elastomeric compounds dissipate static charge buildup, meeting explosive - atmosphere requirements without the added cost and complexity of external grounding brushes.
Elastomeric vs.Metallic Coupling: When to Choose Each
The choice between elastomeric and metallic - flexing coupling technologies hinges on the specific vibration, misalignment, and maintenance characteristics of the application.Elastomeric couplings excel whenever torsional vibration damping adds value — in engine - driven equipment where firing - pulse torque fluctuations can excite drivetrain resonances, in reciprocating compressor trains where torque reversal is inherent to the machine cycle, and in fan and blower drives where blade - pass - frequency vibration can transmit through the structure.They are also preferred where electrical isolation is required between shafts to prevent bearing currents.Metallic couplings — gear, disc, and diaphragm types — are selected when high torsional stiffness, zero backlash, or high - speed / high - temperature operation beyond the limits of elastomeric materials is required.A diesel - driven fire pump, for example, is an ideal elastomeric coupling application: engine vibration must be isolated from the pump, fail - safe continued operation after element failure is critical, and routine coupling inspection is included in the weekly engine - room rounds.A high - speed centrifugal compressor, by contrast, demands the torsional rigidity and balance fidelity of a disc coupling.Regal Rexnord’s multi - technology coupling portfolio ensures that application engineering drives the technology selection, not supplier limitations.
Elastomeric Couplings for Marine Propulsion & Power Generation
Regal Rexnord Centa and Jaure elastomeric couplings are widely specified in marine propulsion systems, from high - speed pleasure craft to workboats, ferries, and naval vessels.These couplings isolate the torsional vibration produced by diesel engines from the transmission and propeller shaft, significantly reducing gear noise and extending the service life of transmission bearings, dampers, and propeller components.In generator - set applications, our highly flexible elastomeric couplings connect diesel or gas engines to alternators, accommodating the frame flexure and thermal growth of the engine - generator base while providing the torsional softness that shifts drivetrain resonances below idle speed.Wind - turbine main - drive couplings from Jaure incorporate elastomeric elements engineered for the high torque, variable speed, and 20 - year service life expectations of utility - scale wind generation, with lightning - current isolation that protects the generator bearings from electrical damage.Across these demanding applications, Regal Rexnord’s elastomeric coupling technology provides the maintenance - free reliability and torsional performance that keep critical equipment generating power and propulsion without coupling - related downtime.