US 2014/0233875 A1 · SLIDING BEARING

Abstract

In this sliding bearing, which is provided with a resin coating layer at the surface of a bearing alloy layer layered at a back metal layer, a PAI that degrades with difficulty at high temperatures is used as the main component as the resin binder of the resin coating layer, adjustment particles are included in the resin binder, and as a result, the compressive strength of the resin coating layer is increased, and indentations of the resin coating layer resulting from a shaft are prevented. Meanwhile, a plate solid lubricant is included in the resin binder, and thus sliding characteristics are improved. Also, delamination due to cracks is prevented by the effect of adjusting the orientation of the solid lubricant and the damming effect of the adjustment particles, and thus superior anti-seizure property is provided even in an engine that frequently repeats starting and stopping.

Claims4

Dependent claims

A sliding bearing comprising a back metal layer, a bearing alloy layer layered on the back metal layer, and a resin coating layer having a sliding surface that is provided on a surface of the bearing alloy layer, wherein

the resin coating layer is formed as a layer having a thickness of 2 to 10 μm and including 20 to 50 vol % of a plate solid lubricant and 5 to 30 vol % of adjustment particles in a resin binder of which a main component is PAI, the adjustment particles having an average particle size of 0.7 to 1.6 μm and a Vickers hardness of 100 to 300, and
the plate solid lubricant is disposed in a state where an orientation intensity ratio of a (0, 0, L) plane of the plate solid lubricant to the sliding surface is 75% or more and 85% or less.

Dependencies are inferred from the claim text.

Sliding bearing

Life of this patent

Sliding bearing

Life of this patent

Abstract

Claims4