Metal-based solid bronze bearings are divided into graphite plugged bronze bushing and powder metallurgy overall sintered bronze bushing. Metal-based graphite bearing is in the metal substrate pre-designed, processing a certain area proportion of the hole or groove, in which embedded in solid lubricating material, after special bonding and aging treatment, the two combined into a whole, to its bearings, shaft tile or liner. All inlay holes are arranged crosswise along the direction of motion, in the axial or radial direction, to ensure that the bearing lubrication covers the whole sliding direction and forms a complete solid lubricating film. Bearing in motion due to the thermal effect and friction, so that the solid lubricant constantly seeps out the transfer at the same time the substrate wear solid lubricant gradually exposed, play lubrication and friction
Powder metallurgy integral sintered bronze bearing is the solid lubricant in the form of powder as a component added to the metal matrix raw materials, through the press molding, sintering, and the formation of self-lubricating composite materials. It is used as bearings, shingles, or liners. The lubricant interacts with the material matrix during sintering and is partially or completely transformed into a new state because the material itself contains a solid lubricant. Lubricant, repair the torn or broken lubricating film, to achieve lubrication and friction reduction effect.
Both use solid wetting agents to isolate the frictional surfaces in contact with each other surfaces to reduce surface friction and wear.