Overview
The R+W EK7/20/B/19.05PFN/26 is a compact elastomer coupling designed for flexible power transmission in industrial automation and mechanical systems. This EK7 model features two concentrically machined coupling hubs with curved jaws—one side with a clamping hub and screw, the other with an expanding shaft and internally tapered clamping element. The elastomer insert is precision molded from wear-resistant and thermally stable polymer. Built for reliable performance where vibration damping and compact installation are critical.
Key Features
- Short, compact design enables easy axial mounting in space-restricted installations
- Backlash-free operation with vibration damping and electrical isolation
- Aluminum hubs (up to series 450) or steel options; expanding shaft and cone made of steel
- Unique assembly screw design allows for easy axial mounting and dismounting of the coupling hub
- No lateral access holes required for screw tightening
Technical Specifications
Bore diameter 19.05 mm (3/4″) on one side, 26 mm on the other. Elastomer insert provides flexibility while maintaining high torsional stiffness. Material composition selected for reliability in industrial automation duty cycles.
Typical Applications
- Servo motor and actuator couplings in factory automation
- Motion control and precision machinery drive systems
- Industrial equipment where vibration isolation is required
- Power transmission in space-constrained mechanical layouts
Compatibility & Replacements
Compatible With
- Standard shaft installations with 19.05 mm and 26 mm bore diameters
- Industrial motors and gear reduction units
- Precision mechanical power transmission systems
- Motion control applications requiring electrical isolation
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering to ensure proper fit and performance in your specific application.
Works With
- Standard ISO 4762 clamping hardware
- Flexible coupling assemblies in servo and stepper motor systems
- Vibration-sensitive mechanical assemblies
