| 摘要 |
A sliding radial Bearing Arrangement ( 110 , FIG. 4 (b)) of the immersion-lubricated, profiled clearance type, particularly used with a vertical longitudinal rotation axis orientation, has a stationary bearing surface 117 ' of the lobed type surrounding a shaft 111 of circular cross-section such that there exists angularly a succession of sections 119 <SUB>1</SUB> , . . . 119 <SUB>4 </SUB>defined by circles centered displaced from the longitudinal axis and by which the clearance 118 is varied as a succession of regions of maximum and minimum clearance 118 <SUB>MAX </SUB> 118 <SUB>MIN</SUB>. In at least one region of clearance greater than the minimum a duct of limited angular extent runs longitudinally and is twisted about the longitudinal axis such that its angular position varies between opposite ends of the bearing. The duct may be provided by gutter regions 118 <SUB>MAX </SUB>between the sections or by channels 150 cut into the surface.
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