ferritebearing

Ferrite bearing, also known as ferrite sleeve bearing or tube bearing, is a type of bearing that uses a ferromagnetic material as its outer sleeve. These bearings are designed to be used in low-load applications where a non- metallic bearing material can be used for its lubricating and damping properties. Ferrite bearings are often used in applications where corrosion resistance is required.

Ferrite bearings are composed of a metal alloy, typically a ferrite iron alloy or a ceramic material embedded with a cobalt or nickel iron ferrite mixture. The outer sleeve of the bearing is made from the ferrite material, which is typically gray or blue in color. The inner sleeve is usually made from a softer, more wear-resistant material such as brass or bronze.

The ferrite bearing uses a non-contact system for lubrication, relying on the ferrite material to extract the oil from the lubricant and create a thin film at the bearing surface. This eliminates the need for lubricants and reduces the risk of metal-on-metal contact, which can cause wear and tear on surrounding components. Ferrite bearings can be used in mine haulage propulsion systems, energy storage equipment, clean room equipment, office door closers and other applications where reduction in vibration is needed.

The ferrite bearing's magnetic nature allows it to be used for vibration and noise reduction. Ferrite bearings are often used in applications where protection from dust, chemicals and grime is needed. A key characteristic of ferrite bearings is that they are unaffected by high non-homogeneity in orientation, therefore working well in unbalanced mechanical systems. The surface roughness of the ferrite bearings is calculated with an average of Ra.</siz