Phenolic bearings are plastic bearings made primarily from phenolic resin. Thanks to the unique properties of phenolic resin, phenolic resin bearings are a popular choice for a wide range of industrial applications.
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Features of Phenolic Bearings
Phenolic resin is a thermosetting plastic made from phenol and formaldehyde. It is known as the world’s first fully synthetic plastic made from non-plant-based raw materials. Similar resins can also be produced from phenolic compounds such as cresol, and these are often classified as phenolic resins as well. Phenolic resin offers excellent electrical insulation, non-magnetic properties, high oil resistance, good chemical resistance, and strong heat resistance. One drawback is that it is weak against alkaline substances. Considering its overall performance, it is also relatively cost-effective.
Phenolic resin (examples: Bakelite, formaldehyde resin, carbolic resin)
Advantages
- Corrosion resistant
- Lightweight
- Electrically insulating
- Relatively heat resistant
- Suitable in some environments exposed to chemicals or moisture
Disadvantages
- Lower strength than metal
- May be vulnerable to impact and heavy loads
- Has limits under high-temperature, high-load, and high-speed conditions
- May wear more easily depending on the mating material and operating environment
Typical Applications of Phenolic Bearings
What Is Phenolic Resin?
Phenolic resin is a long-established thermosetting material with the following characteristics:
- Relatively hard and rigid
- Good heat resistance
- High electrical insulation
- Moderate resistance to water and oil
- Performs well in applications where wear conditions are favorable
Phenolic bearings are often considered for applications such as:
- Equipment requiring electrical insulation
- Machinery exposed to moisture or chemical atmospheres
- Locations where metal corrosion must be avoided
- Rotating parts used at relatively low to medium speeds
Phenolic bearings can be described as rigid plastic bearings suitable for environments where metal bearings are not ideal.
