Spherical Couplings


The Team Hydrostatic Spherical Coupling transmits tensile and compressive forces while allowing angular misalignment. Hydrostatic Spherical Couplings are used in applications for multi axis vibration, structural fatigue testing, and any application where angular movement is required. Each coupling connects the vibration system (Hydraulic or Electrodynamic) to the table / test article, protecting the system from damage due to misalignment or angular motion.

Single and Double pivot couplings are available, in either 0.5 degree or 6 degree configurations. Our double pivot couplings allow for angular and lateral misalignment. Each spherical surface is hydrostatically lubricated for extremely high stiffness, zero backlash, and infinite life.



  • Hydrostatic Bearing Surfaces
  • +/- 0.5 Degree or 6.0 Degree Angular Rotation
  • Extremely High Stiffness
  • Zero Backlash
  • Zero Wear*

*When oil is maintained to ISO 15-13-10 standards


  • Multi Axis Test Systems
  • Co-Planar Actuators
  • Fatigue Test Sytems
  • Custom Test Rig Configurations