Sliding bearing

Details Sliding bearing Sliding bearing

2006-11-07

2006-11-07

Footland, Lenard A. (Department: 3682)

Bearings

Bearing-surface treatment

Reissue Patent

active

RE039377

ABSTRACT:
A helical groove1B is formed in the sliding surface1A of a sliding bearing1over the entire axial region thereof. To establish the height of a peak1a defined by the helical groove1B, an imaginary reference line L extending parallel to the axis is formed which is determined such that the total cross-sectional area of all the peaks1a is equal to the total cross-sectional area of all the valleys1b when the helical groove1B is considered in axial section. A height, as measured from the reference line L to the top1a′ of the peak1a is chosen in the range of from 1 to 8 μm. The space created by forming the valleys1b allows the supply of lubricant oil to be increased, thereby simultaneously achieving a reduction in the frictional resistance and the occurrence of an impact sound.

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