In a multi-bearing system, how many bearings are typically fixed?

In a multi-bearing system, it is typical for only one of the bearings to be fixed. The fixed bearing serves primarily to maintain the position of the shaft and ensure it remains in alignment, which is crucial for operational efficiency and stability. This bearing prevents axial movement, allowing the shaft to expand or contract due to temperature changes or other operational factors without causing stress on the system.

The other bearings in the system are usually designed to be floating or non-fixed. This floating design allows them to accommodate any axial movement of the shaft, ensuring that the system can operate without imposing unnecessary loads or wear on the bearings themselves. By having only one fixed bearing, the design can effectively balance the need for stability while still allowing for the necessary movement of the shaft.