Gas lubricated bearing faults - bearing knowledge

( 1) Carrying capacity of low gas lubrication bearing with the same kind of oil lubrication bearing ratio, low carrying capacity of about 1 ~ 2 orders of magnitude. According to the bearing capacity per unit area, oil lubrication bearing is commonly ( 5 ~ 2) MPa, while gas lubricated bearing only ( 04) MPa。 ( 2) Poor reliability on the one hand, gas lubricated bearing is easy to instability, a common hammer vibration and vortex instability phenomenon. On the other hand is gas lubricated bearing binding, holding shaft or killed phenomenon also happen from time to tome. ( 3) Need to manufacture high precision, high cost because of the gas film is thin, generally within a few microns to a few microns, and so on parts manufacturing precision demand is higher, increase the cost. In addition, there are small holes and spiral groove, throttling porous materials and other special technical requirements, increase the manufacturing difficulty and cost. ( 4) Working conditions demanding gas lubricated bearing need high cleanliness of the work environment and strictly abide by the operation procedures, to ensure the normal work of the bearing, not an accident. To this end, to a certain extent to limit its wide application and commercialization.