RBC Bearings is the leader in self-lubricating technology with our patented FiberglideŽ liners. 11. A combined thrust and journal bearing comprising: a journal bearing including rolling elements and a cylindrical ring cooperating with the rolling elements; a thrust bearing including rolling elements, a radially extending flange cooperating with the thrust bearing rolling elements on annular support surface on the flange, and an annular rolling plate having a first face constituting a race for the thrust bearing rolling elements and a second face abut-ting the support surface, the radial extent of the support surface being less than the generatrices of the thrust bearing rolling elements, and the abutment surface being convex.
Standard oil cooling is provided by a plate-style heat exchanger mounted directly on the non-drive end unit and requires freshwater typically journal & thrust combined bearing provided at a temperature of 30 C (85 F). Standard coolers can meet any speed within the product's published load and speed ranges.
9. A combined thrust and journal bearing comprising: a journal bearing including rolling elements and a cylindrical ring cooperating with the rolling elements; a thrust bearing including substantially cylindrical rolling elements, a flange extending radially outwardly from and being integral with the cylindrical ring and cooperating with the thrust bearing rolling elements on an annular support surface on the flange, and an annular rolling plate having a first face constituting a race for the thrust bearing rolling elements and a second face abutting the support surface, the radial extent of the support surface being less than the generatrices of the thrust bearing rolling elements, the flange having an abutment surface adapted to be placed against a fixed surface of the element which receives the bearing said abutment surface being located on the opposite side of the flange to the support surface and at a greater distance from the axis of the bearing, than the support surface.
A thrust shaft body having an enlarged disk at one end positioned between said opposed housing portions to define thrust bearing surfaces, a first cylindrical portion extending from said disk, and a second cylindrical portion having a smaller diameter than said first cylindrical portion, said second cylindrical portion extending from said first cylindrical portion to an end of said shaft remote from said disk, said thrust shaft body having a hollow bore, with a ledge extending across said hollow bore at a location within said first cylindrical portion, and said ledge being formed with a central hole of a first hole diameter, and twelve holes spaced circumferentially about said central hole, said twelve holes being formed of a second hole diameter, with a ratio of said first hole diameter to said second hole diameter being between 2.55 and 2.71, and said main shaft extending through said central hole to secure said thrust shaft body to rotate with said compressor rotor.
Balls to be non-central with 7 It is not new to have in a single casing both a thrust and a 'ournal bearingboth of which are provided fu y with grooved tracks for the balls and in one form this has been proposed with the addition of a flan e mounted on a sleeve on the shaft whic sleeve abuts against the cone ortion of the journal bearing.
Thus in t is form a composite 'cone portion may be said to be formed having grooved tracks at right angles for the journal and thrust balls and with this an adjustment for the thrust balls has been provided, the special object of which was to move the shaft longitudinally through the composite cone.
Emphasis has been given to design those bearings so as to avoid metal-to-metal contactTo design these elements, few important characteristics, like load-carrying capacity, maximum pressure and their location lubricant flow requirement between mating surfaces, etc.
In these previous papers on the optimum design of journal bearings, however, the laminar flow condition was assumed in determining the optimum design variables, so the variables obtained are unrealistic for high-speed journal bearings operated in the turbulent flow regime.