Affiliation:
1. Lecturer in Mechanical Engineering, The Manchester College of Science and Technology, Manchester
2. English Electric Co. Ltd, Netherton, Liverpool
Abstract
Expressions for the load-carrying capacity, stiffness and damping rate of pressurized oil film bearings are derived and expressed in terms of the variables available to the designer By adding a simple automatic flow valve, operated by pressure feed-back, the pressurized oil film exhibits infinite stiffness to steady normal loads. The method can be adapted for a system, embodying pilot pad control of a main bearing pad, in which the pilot pad slides on a flat strip and the film thickness of the main pad is varied to compensate for undulations in the main slideway A further experimental and theoretical investigation is described in which feed-back control is used to support concentrically the shaft of a journal bearing. With a shaft diameter of 2 in. and a radial clearance of 0002 in. the eccentricity is generally not greater than 2 × 10-5 in., as inferred from the pressure measurements, for loads exceeding 300 lb and rotational speeds up to 1200 rev/min. It is argued that much greater loads and higher rotational speeds can be attained with virtually no eccentricity
Reference4 articles.
1. Carroll G. R., Dall A. H. 1958 Proc. Conf. Technology of Engineering Manufacture, Paper 40, p. 511, ‘Brief discussion of bearing design for machine tools’ (Instn Mech. Engrs, London).
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14 articles.
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