Features of 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.
• Very high axial and radial stiffness, allowing required dimensions to be reached faster
and more precisely. Excellent roundness of grinding diameters.
• High load capacity.
• Speed and stiffness are independent and full load turning from 0 to maximum speed is
possible.
• Wear-free because there is no contact between moving parts when in operation.
• No loss of accuracy, even under full load at maximum speed.
• Less sensitive to chips and other debris because the bearings are cleaned continuously with hydrostatic oil.
• 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.
• The spindle can be driven by belt, direct drive, or as a motor spindle.
• Static and dynamic bearing forces from the cutting force or unbalance of the workpiece can be detected by measuring the pocket pressure.
• The hydrostatic lathe spindle is especially well suited to horizontal or vertical turning
machines or for mill / turning machines.
• The hydrostatic spindle can be adapted to specific machining force and torque requirements