What is the result of thermal expansion on machine alignment?

Thermal expansion can significantly impact machine alignment due to the changes it induces in the dimensions of the components involved. As machines operate, they generate heat, leading to a rise in temperature that causes materials to expand. This expansion can alter the distances and angles between machine parts, resulting in misalignment.

When the components of a machine experience thermal expansion, the expansion is not uniform across all parts, as different materials may have different rates of thermal expansion. Consequently, this can lead to situations where coupling components, bearings, and other aligned parts shift out of their desired positional relationship during operation.

Recognizing that misalignment can occur as a result of thermal expansion emphasizes the importance of considering operating temperature ranges when performing alignments. Proper design and alignment practices account for thermal effects to maintain optimal machine performance and longevity.