국내 최대 기계 및 로봇 연구정보

공학설계D/B

공학설계D/B 게시판 내용
Volume Title	Tribology
Volume No	Journal bearing calculations - hydrodynamic (axial/circumferential groove, laminar/turbulent), hydrostatic.
DATA Title	Calculation methods for steadily loaded central circumferential groove hydrodynamic journal bearings.
DATA Item	90027
KEYWORD	bearing, circumferential, design, eccentricity, fed, film, flow, groove, hydrodynamic, journal, loss, lubricant, performance, power, pressure, rate, temperature, thickness
ISBN	0 85679 753 7
ABSTRACT	ESDU 90027 provides a method for the design and performance analysis of bearings that are steadily loaded or for which the load and/or speed vary slowly. A design procedure generates the bearing proportions, overall size, and groove dimensions once the load and speed are specified, and also provides the bearing clearance and the viscosity grade of the lubricant (when it is not initially specified) and its feed pressure. The design may be analysed using equations and charts to determine the power loss, lubricant flow rate, bearing temperature, and lubricant temperature and film thickness. Finally, the design is assessed to ensure it meets criteria for minimum film thickness (taking account of surface finish), maximum bearing temperature, and lubricant outlet temperature. The bearing is also checked for stability. The procedure is illustrated with a practical worked example. See ESDU 93004 for a Fortran program of this calculation method.