Lifting capacities greater than 41 N/cm2 (60 psi) at 77 K have been achieved using a combination of permanent magnets and high quality melt-textured YBa,Cu,O,-s (YBCO). The key concept of this hybrid superconducting magnetic bearing (HSMB) is the use of strong magnetic repulsion and attraction from permanent magnets to support high loads in conjunction with flux pinning in a type II superconduc...

A mixed lubrication model is developed to investigate the lubrication of coupled journalthrust-bearing systems. The governing equations are mapped into a computational domain with a conformal mapping technique developed in a previous study by Wang et al. (2002). In order to study the influence of the boundary conditions on the performance of the bearing system, either the Reynolds boundary cond...

INTRODUCTION Externally pressurized gas-lubricated thrust bearings (aerostatic bearings) keep the bearing clearance constant under a constant supply pressure. We investigated how controlling the supply pressure with an electro-pneumatic servovalve can be used to dynamically adjust the bearing gap height. As a result of our investigation, we developed an electropneumatic servo-actuator “pneumati...