Bearing data analysis and selection of inductive thinking elements

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Bearing Data Analysis and Selection of Inductive Thinking Elements

Source: Bearing Network | Date: February 15, 2014

When selecting bearing materials, it's essential to consider various factors that influence the service life and performance of sliding bearings. The combined data of the bearing and its lining are collectively referred to as "bearing data." These include information about bearing wear, journal conditions, the material of the bearing bush, lubricants, and the overall smoothness of operation.

Bearing Information Includes:

  1. Metal Materials: Such as bearing alloys, bronze, aluminum-based alloys, zinc-based alloys, etc.
  2. Porous Metal Materials (Powder Metallurgy): These materials have a porous structure and can be impregnated with lubricating oil, making them self-lubricating. They are often used in oil-impregnated bearings.
  3. Non-Metallic Materials: These include plastics such as phenolic resin, nylon, and PTFE (polytetrafluoroethylene).

Bearing Alloys: Also known as white metals, bearing alloys are typically made from tin, lead, or antimony. They offer excellent wear resistance, high plasticity, good running-in properties, and good thermal conductivity. Additionally, they have strong oil absorption capabilities, making them ideal for heavy-duty and high-speed applications. Their strength is superior to many other materials, which enhances their durability and reliability under demanding conditions.

Porous Metal Materials: These are produced through powder metallurgy techniques, resulting in a material with a porous structure. When immersed in lubricating oil, the pores absorb the oil, creating an oil-impregnated bearing that provides self-lubrication. This makes them suitable for applications where regular maintenance is difficult or impractical.

Bearing Plastics: Commonly used plastics include phenolic resin, nylon, and PTFE. These materials offer good compressive strength and wear resistance, can operate with oil or water, and provide self-lubrication. However, they tend to have poor thermal conductivity, so they are more suitable for low-temperature or low-speed environments.

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