Advantages and Disadvantages of Hydrostatic Bearing

Advantages and Disadvantages of Hydrostatic Bearing Points : advantages and disadvantages of hydrostatic bearing Hydrostatic bearings are apply for hard applications where predictable plain bearings and rolling bearings cannot gather the tough demands of a grinding machine. Though, hydrostatic bearing systems tend to be comparatively expensive and will so be avoided if capital cost and machine simplicity are given main concern. Advantages 1. High load carrying capacity even at low speeds. But in hydronamic bearing there should be adequate speed to carry the load by the lubricant.
2. Absence of bearing wear below stopping and starting conditions.
3. No rubbing action no wear.
4. Repeatable high bearing rigidity.
5. No starting friction (there is no metal contact).
6. Low heat operation if properly designed.
7. Deficiency of wear under operation conditions.
8. Elevated accuracy of spindle revolving achievable suitable to averaging of bearing and spindle surface errors. Disadvantages 1. Potential to show pneumatic hammer wavering for extremely compressible fluids. that is. loss of damp at low and elevated frequencies of operation due to observance and time lag of attentive fluid volumes.
2. Possible to induce hydrodynamic unsteadiness in hybrid form operation.
3. Require of fluid filtration apparatus. Loss of presentation by fluid contamination.
4. Necessitate ancillary equipment. Bigger installation and maintenance costs.
5. High power use because of pumping losses.