Advantages over plain bearings

Improvement in damping by several orders of magnitude means

  • higher quality workpiece surface finish
  • longer tool service life and
  • higher maximum cutting capacity

Lack of wear means

  • machine properties are unaffected by extended use
  • increased machine availability
  • lower maintenance costs
  • longer machine service life and
  • lower annual machine costs

As properties do not depend on speed/rotational speed, this means

  • greater workpiece accuracy
  • speed-independent gap heights
  • stiffness does not depend on rotational speed

In contrast to plain guides and plain bearings, hydrostatic guides are permanently play-free.

The friction of hydrostatic guides is a power of ten lower and proportional to the speed. In contrast to plain guides, hydrostatic systems do not suffer from backlash when the direction of motion is reversed or the stick-slip effect.

  • significantly higher level of positioning accuracy and true running of guides, in particular when the direction is changed,
  • higher movement speeds or peripheral speeds possible

Very low friction of fast-running bearings means

  • higher rotational speeds are possible
  • lower heat input

The frictional heat generated in fast-running bearings is dissipated from the machine more effectively. The machine temperature can be controlled by feeding in cooled oil, this means

  • better thermal stability of the machine

Reduced sensitivity to contamination, as with hydrostatics, the majority of the contamination is flushed out by the oil and does not damage the guideways, as is the case with plain bearings and guides. This means

  • greater functional safety
  • machine properties are unaffected by extended use
  • increased machine availability
  • lower maintenance costs and
  • longer machine service life and
  • lower annual machine costs

Profile defects on the guide surfaces are largely offset by the hydrostatics, this means

  • hydrostatic bearings run truer and hydrostatic guides are more linear than the guide surfaces themselves.