Intermediate and multiple rotations can be provided as options. These features are combined into a single piece of metal. The two-piece design means that only the ball transfer is actually replaced. The base remains untouched. The standard cargo unit uses a 2-in.
Units are available with a carbon-steel or nylon load ball.
Ill. The Robotte combines the functions of a ball screw and ball spline to provide versatile and compact actuation. Motion can be purely translational, rotational, or combined in any direction due to an individually driven ball nut and spline nut. They can be individually preloaded to eliminate internal clearance and increase rigidity. The actuators are available in standard sizes. A manual positioning knob allows users to move the stage when the motor is not powered up.