Patent ID: 6086254
Filing Date: 2000-07-11
Classification: F16C

Abstract:
A linear motion bearing assembly comprising:a support rail having at least one rail race;a carriage having at least one carriage race and at least one bearing track, a fluid inlet port adapted to receive a continuous source of pressurized hydrostatic fluid, and a fluid supply passage interconnecting the fluid inlet port and at least one bearing track, the at least one bearing track having a load bearing portion, a return portion and a pair of turnaround portions interconnecting the load bearing portion and the return portion; anda plurality of rolling elements positioned along the bearing track, the rolling elements being adapted for longitudinal movement relative to the support rail and being positioned between the rail race and the carriage race to define a leakage gap therebetween, the leakage gap being of a dimension to generate hydrostatic pressure within the at least one bearing track when a source of hydrostatic fluid is provided therein.