Worldwide unique hydrostatic screw drives – all

advantages at 1 glance

15 Advantages over the ball screw and roller bearing:

• Wear-free, as there is no contact during operation
• no loss of accuracy, even in long operation under full load at maximum
• Speed
• frictionless at low speeds
• No reversal of the frictional force when changing the direction of rotation
• Transmits the slightest rotary movements
• No stick-slip effect even at low speeds
• No fluctuations of the frictional torque due to the ball circulation
• higher axial stiffness like ball screws
• Much better damping, thus better workpiece surface and tool life
• No vibrations due to the ball circulation
• Also suitable for high speeds and accelerations
• low-cost alternative to the linear motor with higher accuracy, much lower
• Heating
• Much lower power loss and therefore no problems with chips on the permanent magnets
• Many times lower cooling capacity than linear motors

8 Special technical features:

• Absorption of axial and radial forces as well as moments suitable for single-sided bearing of the threaded spindle
• High-precision bearing of the screw drive
• Double cones suspended between hydrostatic pockets for bearing in “O” arrangement
• integrated flow control by pocket pressure only, only one hydraulic connection,
• No additional electronic control required
• All supply lines and drains in the flange area
• Optional sealing to one side by sealing air/gap seal or sliding seal
• Spindle ends are made according to customer requirements