Patent ID: 6491436
Filing Date: 2002-12-10
Classification: F16C

Abstract:
A plain bearing of a cylindrical or half-cylindrical shape, comprising:a back metal; a bearing alloy layer provided on the inner surface of the back metal, the bearing alloy layer having a recess groove formed on the inner surface thereof, the recess groove extending generally in the circumference direction of the plain bearing; and an overlay layer provided on the inner surface of the bearing alloy layer so as to fill the recess groove and an intermediate layer provided between the bearing alloy layer, the intermediate layer being made of Ni or Ag; wherein the recess groove has a plurality of bent portions whereby said recess groove extends zigzag on the inner surface of the bearing alloy layer, so that when a foreign particle comes between a mating shaft and the plain bearing, the foreign particle runs against a side edge of the recess groove and moves along the side edge, and thereafter leaves the side edge again in accordance with the rotation of the shaft, so as to become embedded in the overlay layer.