It could be a fail safe to prevent more damage to the machinery. Like a Shear Pin.
In the role of a mechanical safeguard, a shear pin is a safety device designed to shear in the case of a mechanical overload, preventing other, more expensive parts from being damaged. As a mechanical sacrificial part, it is analogous to an electric fuse.
[–] Adminstrater 0 points 2 points 2 points (+2|-0) ago
It could be a fail safe to prevent more damage to the machinery. Like a Shear Pin.