Basic characteristics of hydrostatic bearings

Source: Bearing network time: 2014-11-04

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Hydrostatic bearing is an oil film bearing that uses external oil source to carry the bearing capacity; dynamic and static pressure hybrid bearing is a new multi-oil wedge oil film bearing that not only summarizes the advantages of hydrodynamic and hydrostatic bearings, but also overcomes the two defects.
It uses the principle of saving the hydrostatic bearing; it makes a large enough static bearing capacity in the pressure oil chamber; then overcomes the dry conflict caused by the hydrodynamic bearing starting and stopping, which constitutes the bearing and bearing wear appearance; Bearing life and accuracy persistence, bearing oil chamber mostly adopts shallow cavity layout; after the spindle is started; the dynamic pressure bearing capacity and static pressure bearing capacity formed by the shallow cavity step effect are superimposed, which greatly improves the bearing capacity of the spindle. The multi-cavity opposing layout greatly increases the spindle stiffness, the homogenization effect of the high-pressure oil film and the outstanding anti-vibration function, ensuring the spindle has high rotation precision and work stability.

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