How to reduce the friction of the load-bearing shaft without using bearings?

How to reduce the friction of the load-bearing shaft without using bearings?

The methods to reduce friction on load-bearing shafts include the following:

1. Lubrication: Applying appropriate lubricating oil, grease, paste, and other substances on the surface of an object can reduce the contact between the surfaces 

of the object, thereby reducing friction.

2. Improving surface roughness: Reducing surface roughness can decrease the contact area between object surfaces, thereby reducing friction.

3. Using self-lubricating materials: Selecting self-lubricating materials or treating the bearing surface to form self-lubricating coatings or films can effectively reduce 

friction.

4. Using rolling friction: Changing sliding friction to rolling friction can significantly reduce friction. For example, using linear bearings or rolling bearings instead of 

sliding bearings.

5. Reduce contact pressure: Reducing the contact pressure between objects can lower friction. This can be achieved by reducing the load or changing the contact 

method.

6. Changing materials: Using smoother materials can reduce friction. Choosing materials with lower friction coefficients can effectively reduce friction.

These methods can be selected and used according to specific situations to achieve the goal of reducing friction.