Graphite Self-Lubricating Bushings

Semicorex graphite self-lubricating bushings are composed of a cooper alloy matrix and solid graphite plugs. The friction surface of graphite self-lubricating bushings features multiple precision-machined holes orderly distributed, each filled with specially formulated solid graphite plugs. During operation, graphite particles are gradually released from the holes and transferred to the friction surface between the shaft and the bushing, creating a constant lubricating film. This graphite lubricating film eliminates direct metal-on-metal contact, significantly lowers the friction coefficient and minimizing component wear.

Self-lubricating performance

The self-lubricating function of Semicorex graphite self-lubricating bushings relies on their uniformly arranged graphite plugs. Under high-speed operation, the inter-layer slippage of graphite crystals forms a lubricating film that effectively separates metallic surfaces and minimizes friction. Additionally, with the consumption of graphite, internal graphite is continuously pushed to the surface to maintain a continuous lubricating film. Thanks to this superior self-lubricating performance, Semicorex graphite self-lubricating bushings can run stably for a long time in low-oil or oil-free conditions, which significantly reduces equipment maintenance workload and costs.

Reliable wear resistance

The cooper alloy matrix of Semicorex graphite self-lubricating bushings delivers excellent wear resistance due to their material hardness. The graphite plugs of Semicorex graphite self-lubricating bushings separates the shaft and bushing by their lubricating film, which further lowering the bushing wear rate. The combined performance of the copper alloy matrix and graphite plugs gives Semicorex graphite self-lubricating bushings with exceptional wear resistance, ideal for long-term stable operation in equipment featuring reciprocating motion and frequent start-stop cycles.

Flexible customization services

Semicorex provides thoughtful customized services for customers. Our exquisite manufacturing expertise and advanced processing equipment ensure that graphite self-lubricating bushings are strictly produced in accordance with customers’ drawings in terms of diameter, height, wall thickness, dimensional tolerances and performance parameters.

Semicorex graphite self-lubricating bushings overcome the limitations of ordinary copper bushings that rely on oil film lubrication. They are particularly suitable for use in harsh environments such as high temperature and high load, low speed, and applications requiring anti-fouling and anti-corrosion properties, where it is impossible to form a lubricating oil film. They are widely used in equipment in metallurgy, packaging, power, and textile industries, such as rolling mills, filling machines, generators, textile machines, excavators, loaders, and instrumentation. Their use is also becoming increasingly widespread in other industrial and agricultural machinery.