Flywheel Coupling Product Description
The Hayes “Armadillo” Flywheel Coupling absorbs vibration and shock to provide a steady dampening effect. The two-piece design gives you the ability to clamp onto both splined and keyed shafts, greatly reducing spline or shaft fretting corrosion.


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  • Absorbs vibrations and shock loads, lengthening the life of your pump components
  • Provides a steady dampening effect under load
  • Designed for maximum life when operated at normal engine speeds, torque and alignment
  • Rugged steel construction
  • Also offered with a Stiffer Delrin drive inserts for tough alternator or generator applications
  • -40° to +220°F operating temperatures
  • Various series for standard SAE flywheels and Non-standard flywheels including engine housings
  • This one-piece flywheel coupling is used on Off-highway construction equipment such as;
    • Compressors
    • Alternators
    • Generators
    • Custom Bearing Supports
    • Hybrid Vehicles
    • and much more