Thermal behavior of an improved face-grinding spindle: water-lubricated hydrostatic thrust bearing decreases temperature rise and increases axial stiffness

Axial thermal deformation and axial stiffness are the leading technical indicators affecting face-grinding spindle manufacturing accuracy. However, supported by rolling bearings lubricated with grease has a disadvantage regarding temperature rise, stiffness, rotational To overcome this issue, study proposes novel combined bearings, which include water-lubricated hydrostatic thrust bearing two an oil-air lubrication system. The model for proposed is established, behavior analyzed systematically. An experimental prototype of developed, rise detected to verify model. result shows that can be decreased use bearing. A comparative between types spindles support advantage low-temperature high rotation