The copper alloy of copper alloy is used as a bearing material: mainly composed of copper, antimony brass; copper, tin and bronze as the main ingredient; and copper-lead alloy (also known as the lead bronze). Copper alloy high strength, thermal conductivity and good wear resistance and allows the operating temperature is higher than the Babbitt, compliance, embedded and friction compatibility is not as good as Babbitt, can be used as a bearing or bearing liner material. Containing tin, phosphorus bronze, overload or shock load bearing medium speed; tin, zinc, lead, tin bronze, for the bearing set out at medium speed; lead bronze bearing capacity, fatigue strength for high on speed, the impact load bearing; high strength of aluminum bronze, good corrosion resistance, suitable for low load bearing. Brass performance is generally better than bronze, but inexpensive, mainly for low-speed bearings, but manganese, silicon brass performance is better than tin bronze.
Aluminum alloy Al, Sb, magnesium alloy, aluminum-tin alloy and Al-Si alloy. The higher the compressive strength and fatigue strength, thermal conductivity and good corrosion resistance, low cost, but the friction compatibility, embedded, and compliance is poor, widely used in internal combustion engine and compressor bearings.
Cast iron is cheap, the antifriction poor performance, can only be used in low speed light load bearing.
Plastic commonly used phonemic resin, nylon, PTFE, and POM. Plastic bearings self-lubricating properties, low friction, anti-fatigue performance, vibration absorption capacity, good corrosion resistance and embedded water or the emulsion lubrication, and can save non-ferrous metals. Plastic strength than the metal, heat resistance, low thermal conductivity, expansion phenomenon in case of oil or water, designed to take a larger bearing clearance. Add some filler in plastics, such as graphite, molybdenum disulfide, and glass fiber can reduce the friction coefficient and improve wear resistance; copper powder can improve the thermal conductivity and strength. Plastic bearings used in the metallurgical, chemical, textile, food, instruments, and shipbuilding industries.
Rubber embedded and excellent corrosion resistance. Rubber bearings can be used a mixture of particulate impurities in the water as lubricant, flexible, the role of the damper, smooth operation, but the poor thermal conductivity, the operating temperature should be below 70 ° C, or easy to aging. Oil, natural rubber and rubber bearings require oil lubrication oil resistant rubber.
Timber with self-lubricity, low cost, good corrosion resistance. Timber production of the bearings can be used to the requirements of the hygiene of food machinery, food processing machinery. Temperature not higher than 65 ℃. Iron Lei, maple and oak hard wood suitable for production of wood bearing.
Carbon - graphite an excellent self-lubrication and corrosion resistance, and capability of the high temperature of 400 ℃, but the intensity difference required pressure mounted for use in the steel sleeve. These bearings can be difficult to lubricate, does not allow the oil is dirty, high temperature or corrosive environment.