Design and Simulation of a Gambir Press Machine with Hydraulic and Screw Press System, Capacity 100 kg per Hour

Eka Putra Dairi Boangmanalu (Mechanical Engineering, Politeknik Negeri Medan)
Jandri Fan HT Saragi (Mechanical Engineering, Politeknik Negeri Medan)
Angga Bahri Pratama (Mechanical Engineering, Politeknik Negeri Medan)
Sahat Sahat (Mechanical Engineering, Politeknik Negeri Medan)
Franklin Taruyun Hudeardo Sinaga (Mechanical Engineering, Politeknik Negeri Medan)
Siti Ulgari (Mechanical Engineering Education, Faculty of Engineering, Universitas Negeri Medan)

Formosa Journal of Science and Technology (FJST)
Vol. 4 No. 3 (2025): March 2025

This study aims to design and simulate a gambir press machine utilizing a hydraulic system and a screw press with a capacity of 100 kg per hour to enhance production efficiency. The design process is conducted using CAD/SolidWorks software. The design calculations include production capacity, hydraulic pressing force, and drive motor power. Simulation results indicate that the hydraulic system provides uniform pressure distribution of up to 94%, while the screw press increases extraction efficiency by up to 86%. Prototype testing demonstrates that the machine operates with an extraction efficiency of 95% while maintaining optimal power consumption. This machine is expected to improve the productivity of gambir farmers through a more efficient design and easier operation.