PT-3
vertical spindle rotational motion tribometer
- lower specimen
- upper specimen
- fiction torque transducer
- membrane spring
- journal of the spherical hydrostatic bearing
- cup of the spherical hydrostatic bearing
- plunger
- AC electric motor
- belt transmission
- hydrostatic thrust bearing
- spindle
- spindle rotational velocity transducer
- spindle radial hydrostatic bearings
- plunger radial hydrostatic bearings
- housing