The RLES SW Series Jaw Coupling (Snap Wrap Type) is an advanced version of the standard jaw coupling, designed for easy maintenance and quick element replacement without disturbing connected equipment. It incorporates a split elastomeric element (snap-wrap spider) that can be installed or replaced radially, eliminating the need for hub movement.
This design makes SW Series couplings highly suitable for applications where downtime must be minimized,b and maintenance access is limited. It offers the same reliable torque transmission, vibration damping, and misalignment capability as standard jaw couplings, with added convenience.
The split spider design allows quick replacement without moving hubs or shafts, significantly reducing maintenance time.
Ideal for critical applications where continuous operation is essential, minimizing production losses.
Elastomeric element prevents direct hub contact, reducing wear, noise, and extending service life.
Interlocking jaw design ensures torque transmission continues even if the elastomer fails.
Absorbs shock loads and dampens torsional vibrations, protecting connected equipment.
No lubrication required, ensuring clean and cost-effective operation.
Accommodates angular and parallel misalignment, reducing stress on shafts and bearings.
Components:
Two Metallic Hubs
Manufactured from high-grade Sintered Iron, Aluminium, or Cast Iron for durability, strength, and general-purpose size requirements.
Snap Wrap Elastomeric Spider (Split Element)
Designed for radial installation and removal without disturbing connected equipment. Available in:
• NBR (Buna-N) – General purpose, high damping, oil resistant
• Polyurethane / Urethane – Higher torque capacity and wear resistance
• Hytrel® – High temperature, high torque capability, and resistance
Retaining Ring (Optional)
Ensures secure positioning of the split element during high-speed operation.
Working Principle:
Torque is transmitted through the compression of the elastomeric snap-wrap element between the interlocking jaws of the hubs. The split design allows flexibility, minimizes backlash, and ensures ease of maintenance while maintaining torsional stiffness and reliable performance.
Advantages Over Standard Jaw Couplings
• No need to move hubs for spider replacement (no equipment disturbance)
• Faster maintenance and reduced labor cost
• Ideal for difficult-to-access installations
• Lower downtime in continuous process industries
• Improved overall operational efficiency
Typical Applications
RLES SW Series Jaw Couplings are widely used in:
• Pumps and compressors
• Fans and blowers
• Conveyors and material handling systems
• Mixers and agitators
• Packaging machinery
• HVAC systems
These couplings are ideal for applications requiring frequent maintenance or minimal downtime.
Designed for quick maintenance and reduced downtime
Combines flexibility with ease of installation
Proven performance in demanding industrial applications
Ideal upgrade from standard jaw couplings
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