Take a look at this Hammelmann HDP 172 ultra-high-pressure pump with a hairline fracture inside! Built to tackle extreme conditions, it operates at pressures up to 3000 bar (43,500 psi) with a flow rate of 27 l/min at that pressure.
Powered by a robust 170 kW motor, it handles immense forces daily. Hairline fractures can occur due to fatigue, material stress, or a pressure spike beyond the part’s limits.