240.420
Hydrostatic Leadscrews
- Speed comparable to a linear motor - Very low friction when machining, virtually frictionless during positioning - Steps in the 0.1 micron range are possible - No backlash when reversing direction
PDF Data Sheet: Hydrostatic Leadscrews (240.420)Advantages of Hydrostatic Over Ballscrews • Speed comparable to a linear motor
• Very low friction when machining, virtually frictionless during positioning
• Steps in the 0.1 micron range are possible
• No backlash when reversing direction
• Slip-stick effect is eliminated
• Wear is eliminated because there is no metal-to-metal contact during operation
• No loss of accuracy or stiffness even under full load and oscillating motion
• Friction does not vary when reversing direction
• Very long service life
Unique Technical Features • High accuracy when transferring rotary motion into linear motion
• Nut is suspended on hydrostatic oil pockets
• Internal flow control
• Only one hydraulic connection required
• Dimensions of leadscrew similar to ballscrew size
• No seal wear or friction
• Adaptable to a machine’s parameters:
• Axial load (can be different in both directions)
• Maximum RPM
• Required stiffness
• Viscosity and temperature of hydraulic oil
For more information regarding this item (Hydrostatic Leadscrews) or other items, fill out the form below
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Telephone: 815-962-5600
Fax: 815-962-4600
Location: 304 North Main St, Suite 104, Rockford, IL 61101-1101 USA
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Comparison: Hydrostatic Leadscrews, Linear Motors, and Ballscrews
Design limitations and problems in ballscrew applications lead to the development of linear motors and to wear-free hydrostatic leadscrews. In
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Hydrostatic Application Worksheet
Download the PDF data sheet for the Hydrostatic Application Worksheet
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Application: Hydrostatic Rotary Tables
The world's largest gear and profile grinding machines use hydrostatic bearings.
Hydrostatic Slides
- Very low friction, no friction at positioning
- Movement of 0.1 micro-m possible
- No reversal backlash of friction force
Hydrostatic Center Bearings
- Only one radial bearing
- Moment and axial forces are carried by an axial bearing
- Integrated clamping piston and rotating oil union for a hydraulic collet. The clamping piston is driven with hydrostatic oil and released with springs.
- Extremely minimal friction (results in minimal warming during continuous operation, and more of the motor drive force applied to the workpiece).
Hydrostatic Lathe Spindles
- Very low friction will heat the spindle only slightly. Nearly all motor power gets to the
workpiece. Heat that is generated is moved immediately out of the spindle area with the oil and cooled in the chiller.
- No vibration from roller bearings for extremely smooth operation.
- Excellent damping of vibration during grinding process, resulting in superior surface finish and workpiece accuracy. In addition, grinding wheels will stay sharp longer.
Hydrostatic Universal Bearings
- Frictionless even at minute revolutions
- Transmits minute rotating motion
- No backlash when reversing direction
- Slip-stick effect is eliminated
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