Features of Hydrostatic Grinding Spindles with Motor • 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.
• Very high axial and radial stiffness, allowing required dimensions to be reached faster
and more precisely. Excellent roundness of grinding diameters.
• High load capacity.
• Stiffness is independent of speed and load, grinding and dressing can both be performed at maximum speed.
• Wear-free because there is no contact between moving parts when in operation.
• No loss of accuracy, even under full load at maximum speed.
• Not sensitive to grinding grit or other contamination – the bearings are flushed
continuously.
• Gap is sealed with a compressor air lock which keeps the oil in the spindle and keeps
machining coolant and chips out.
• The spindle is supplied with a properly sized hydraulic power unit with chiller. The system is designed to protect the internal bearings should electrical power fail.