What method can be used to remove a bearing from a steel shaft without causing damage?

Using dry ice and liquid nitrogen is an effective method for removing a bearing from a steel shaft without causing damage due to the principle of thermal contraction. When dry ice or liquid nitrogen is applied, it cools the bearing significantly. The metal of the bearing contracts more than that of the steel shaft, creating a gap that allows for easier removal. This method minimizes the risk of damage compared to applying excessive force or heat, which can warp or damage the bearing or the shaft.

While options like heat application can also be useful, they risk overheating and damaging the components. Industrial solvents do not apply to this context, as they do not provide a mechanism for physical separation and may leave residues. Mechanical extraction tools, while effective in many situations, may exert too much force and potentially damage either the bearing or the shaft if used improperly. In contrast, utilizing dry ice and liquid nitrogen offers a controlled and non-destructive approach, thereby making it a preferable choice.