The application of Plain Bush Bearing in mechanism

Plain bush bearings (sometimes just called "bushings") are simple, sleeve-shaped components used to reduce friction between rotating or sliding parts in a mechanism. They're made from materials like bronze, brass, plastics (like PTFE or nylon), or composites.

Here's how and where plain bush bearings are typically applied in mechanisms:

Support Shafts:

In rotating shafts (like those in motors, fans, or wheels), a plain bush bearing provides smooth support and alignment.

It absorbs radial and sometimes axial loads, allowing the shaft to spin freely.

Low-Speed Rotating Applications:

Ideal for low to moderate speeds where very high precision isn't needed.

Examples: agricultural machinery, small electric motors, conveyor belts.

Oscillating Motion:

In joints that swing back and forth (like hinges or robotic arm pivots), plain bush bearings handle repeated motion without needing rolling elements (like balls or rollers).

Example: suspension linkages in vehicles.

Heavy Load, Low Speed:

Since they have a larger surface area contact, they are excellent at bearing heavy loads where speed is not extreme.

Example: hydraulic cylinders, construction equipment joints.

Self-Lubricating or Maintenance-Free Designs:

In mechanisms where regular maintenance is hard, plain bush bearings can be made of self-lubricating materials (like sintered bronze or polymers filled with lubricants).

Corrosive or Dirty Environments:

Unlike rolling bearings, plain bush bearings can tolerate dust, dirt, and chemicals better.

Example: marine equipment, food processing machines (with specific materials).

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