Bahasa Inggris: Bahasa Inggris

Muhamad Safi'i (Mechanical Engineering Study Program, Faculty of Engineering and Informatics, Persatuan Guru Republik Indonesia Semarang University.)
Akhmad Irfan (Mechanical Engineering Study Program, Faculty of Engineering and Computer Science, Sains Al Qur’an, Central Java, Wonosobo University.)
Rouf Muhammad (Mechanical Engineering Study Program, Faculty of Engineering, Jakarta Politecnic of State PSDKU Demak)
Suheri Suheri (Mechanical Engineering Study Program, Faculty of Sains and Technology, Samudra University, Langsa, Aceh)
Yafid Effendi (Mechanical Engineering Study Program, Faculty of Engineering, Muhammadiyah Tangerang University)

Majalah Ilmiah MOMENTUM
Vol 22 No 1 (2026): Vol.22, No.1 (2026)

Cavitation is a major issue in centrifugal pumps because it impacts their performance and efficiency. Experimental research was conducted to investigate the effect of the number of impeller blades and mass flow rate on the cavitation phenomenon in centrifugal pumps, as well as to characterize them. The Ebara brand centrifugal pump type 65x50 FSS4JA used in the TCU installation of the Casting Machine has a number of blades of 4 and 6 with a fixed inclination angle of 60° as the object of research. The fluid mass flow rate varies with values ​​of 1.67 kg/s, 3.33 kg/s, 5.67 kg/s, and 7.33 kg/s. The research findings show that the highest cavitation occurs in the centrifugal pump with 4 blades, with an NPSH value reaching 2.02 at a mass flow rate of 5.67 kg/s, while the lowest value is found in the pump with 6 blades with an NPSH of 1.88 at a mass flow rate of 7.33 kg/s. A 6-blade centrifugal pump operating at a mass flow rate of 7.33 kg/s demonstrated the best results in this study and is feasible for field application. Keywords: Impeller, Cavitation, Pump, Centrifugal.