#500 Series (Self-Lub.)

• LuBo #500 Series Self-lubricating Bearings can be utilized where heavy loads must be supported at low to medium speeds.
• Bearings have high mechanical strength with excellent wear resistance and self-lubrication properties exhibiting stable performance and durability under severe operting conditions.
• No form of supplementary lubrication is required. A film of solid lubricant is transferred to the shaft as it starts to run.
• In operation, both surfaces burnish quickly and result in a highly polished bearing surface capable of withstanding extreme pressure.
  

LuBo #500 Series Materials

• Normally, copper alloy is used as the base material for LuBo #500 series bearings by centrifugal or sand casting.
  Other materials such as cast iron, stainless steel and even tool steels could be used according to the applications involving extreme temperatures, environments corrosive to bronze, and loads exceeding the compressive strength of bronze.

NOTE : When used for high strength bearings, alloys LuBo #500SP, #500SPX and #500HCA equire hardened shafts.

Solid Lubricants
A bearing and its mating surface should always be separated by a film of lubricant. LuBo produces proprietary solid lubricant compounds consisting of graphite, PTFE, metallic oxides, white metals, waxes, and other minerals that are compressed and heat treated into dense plugs. These plugs are then installed into the base metal.

Lubricants used in LuBo products are solid, permanent, and completely self-lubricating, They are constantly tested and monitored in our laboratories to ensure superior bearing performance.

LuBo produces different solid lubricants for both high temperature (greater than 300°F) and aquatic applications. Please contact LuBo's application engineers for assistance with these special operating conditions.

High Temperature Applications
Applications involving bearing temperatures greater than 300°F(150°C) require critical engineering to optimize performance. The thermal expansion of mating components must also be considered to allow for proper clearance or interference, Not only bearing materials and lubricants but differences in thermal expansion of the housing and journal must be carefully calculated to ensure satisfactory performance. Therefore, it is important that out application engineers advise on all high temperature applications.

Characteristics for Proper Material Selection
Selection of the proper bearing material is essential to obtaining both long bearing life and maintenance free operation. Please consult the following charts of operating conditions, mechanical and physical properties, and chemical resistance when selecting the bearing material for your specific application. Please consult LuBo's application engineers for other available metals.(For extreme high load and harsh environment.)