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Analisis kekuatan pembebanan frame mesin press hidrolik kapasitas 3 ton Ghifari, Muhammad Aqshal; Prihastuty, Endang; Tohasan, Achmad
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 8 (2024): STIMA 8.0 : Menuju Kesinambungan : Inovasi dan Adaptasi Teknologi untuk Pembangunan Be
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/stima.v8i0.1193

This study examines the safety and stress factors to determine the maximum dynamic load that can be supported by the press machine frame. Dynamic loads occur due to the working mechanism of the press machine that presses the bearing. Stress analysis test simulation using the Solidwork 2020 computer program with the finite element method in the simulation test of the hydraulic press machine frame material structure with dynamic load treatment. The frame design model uses U-profile iron material UMP 50 with a thickness of 3-5mm with dimensions of 50 mm x 38 mm. The simulated variable load is 3000 kg. The simulation results show the yield strength of the material = 521.927 N / m² (Mpa) and the stress, displacement, strain values at a load of 3000 kg = simulation Stress = 620.422 N / m² (Mpa), Displacement = 1.232mm, Strain = 0.001. The von Mises stress value is 29,500 N = 620.422N; 521.927 N = 1.88. The simulation results show that the hydraulic press machine frame design has a safety factor of 0.001 and can withstand dynamic loads of up to 3000 kg.

RANCANG BANGUN TRANSMIS MESIN PERONTOK 3600 RPM BERBASIS MOTOR BENSIN hamdi, fahmi; Prihastuty, Endang; Tohasan, Achmad
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 8 (2024): STIMA 8.0 : Menuju Kesinambungan : Inovasi dan Adaptasi Teknologi untuk Pembangunan Be
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/stima.v8i0.1196

A rice threshing machine is the process of separating rice from its stems, so that reducing rice agricultural yields is very strategic in supporting rice production. Modification of the tool which previously used a slamming system, resulted in the yield of grain containing quite high levels of grain. The aim of this research is to design the transmission rotation to make the belt pulley and shaft more effective. The rice threshing machine transmission system consists of a pulley and belt with various belt sizes. The appearance of the pulley for calculations is adjusted to a pulley size of 10 inches = 25.4cm. Then the belt that connects the 10 inch/25.4cm pulley and the 9.74cm A58 belt is the belt that connects the pulley and the shaft. Based on the results of transmission performance testing with power and planning moment of 5.8164 kW and pulley planning moment of 1573.65 kg.mm from type A, the calculation of driver pulley rotation = 3 inches (d1) and motor rotation = 3600 rpm (n1) can be used rpm of the drive pulley when it is not loaded and when working, namely the rpm of the drive pulley when it is not loaded is 1080 rpm. Furthermore, the pulley rpm when working is 9.75\ rpm\ and\ The design power of the shaft is 4.92\ for the shear stress that occurs on the shaft of 0.838 kg/mm which is smaller than the allowable shear stress with a value of 5.16 kg/mm. so that the power and moment of planning the shaft with a diameter that can be used safely.

Perancangan Perancangan Sistem Trasmisi Mesin Pres Hidrolik Kapasitas 3 Ton Dengan Penggerak Motor listrik Prayuda, Gilang Angga; Prihastuty, Endang; Tohasan , Achmad
SEMINAR TEKNOLOGI MAJALENGKA (STIMA) Vol 8 (2024): STIMA 8.0 : Menuju Kesinambungan : Inovasi dan Adaptasi Teknologi untuk Pembangunan Be
Publisher : Universitas Majalengka

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31949/stima.v8i0.1198

Technological advances have encouraged improvements in the industrial sector in developing countries, including Indonesia. This is of course supported by several factors, including the use of modern equipment as a substitute for human labor. It can be said here that the more modern an industry is, the more machine power is used while the less human power is needed. As human needs become increasingly greater, the machine industry is currently also developing very rapidly. Developments in the industrial sector are marked by the creation of various types of machines that can assist human activities. The use of machines can help human activities or work to be more efficient in terms of completion time, as well as reducing the risk of work accidents. Currently, machines are used as tools that have high automation and precision. Therefore, many people use machines for everything, one of which is a pressing machine. A pressing machine is a tool made to compress or press an object, the power source can come from hydraulics, human power, electric motors and others. The aim of this final project is to design a transmission system for a 3 Ton Semi-Automatic Hydraulic Press Machine with an electric motor drive. It can increase the author's knowledge, insight and experience regarding planning a machine. Conclusion Ball bearings with type 6203 require an installation time of 1 minute 35 seconds and removal of 1 minute 32 seconds. Ball bearings of type 6305 receive a pressure of 400 psi to be installed on the shaft, and when released the pressure produced is the same, namely 400 psi to be able to leave the shaft. A type 6206 ball bearing with a shaft length of 77 mm takes 3 minutes 32 seconds to install, while the same shaft length takes 3 minutes 22 seconds to remove from the shaft.

The Pengaruh Variasi Sudut Kemiringan Pisau terhadap Kapasitas Produksi dan Efisiensi Pemotongan Mesin Pencacah Rumput Endang Prihastuty; Achmad Tohasan; W. Djoko Yudisworo; Muhamad Faisal; Cucu Adi
Mestro: Jurnal Teknik Mesin dan Elektro Vol 8 No 01 (2026): Edisi Juni (In Progres)
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v8i01.824

Forage is the main component in ruminant farming, but manually chopping grass is considered inefficientin terms of time and effort. This study aims to design and build a grass chopper machine with blade anglevariations of 15°, 30°, and 60°, as well as to find out the effect of each angle on production capacity, thequality of the chopped grass, and cutting efficiency. The machine is designed using a Honda GX160gasoline engine with 5.5 hp, an 8:1 ratio pulley transmission system, a frame made of angle iron, and HSSsteel blades, with machine dimensions of 80 cm long, 45 cm wide, and 101.11 cm high. Testing was carriedout by inserting 3 kg of grass material for each blade angle variation. The test results showed that a 60°blade angle couldn’t be used because it collided with the machine body. A 15° blade angle gave aproduction capacity of 72 kg/hour with a cutting efficiency of 63% and uneven chopping quality.Meanwhile, a 30° blade angle provided the best performance, with the highest production capacity of 90kg/hour, cutting efficiency reaching 66%, and even chopped quality. Based on these results, it wasconcluded that a 30° blade tilt is the most optimal angle to use on a grass chopper machine for producinggood-quality chops more efficiently.

The Pengaruh Variasi Sudut Kemiringan Pisau terhadap Kapasitas Produksi dan Efisiensi Pemotongan Mesin Pencacah Rumput Endang Prihastuty; Achmad Tohasan; W. Djoko Yudisworo; Muhamad Faisal; Cucu Adi
Mestro: Jurnal Teknik Mesin dan Elektro Vol. 8 No. 01 (2026): Edisi Juni 2026
Publisher : Fakultas Teknik Universitas 17 Agustus 1945 Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47685/mestro.v8i01.824

Forage is the main component in ruminant farming, but manually chopping grass is considered inefficientin terms of time and effort. This study aims to design and build a grass chopper machine with blade anglevariations of 15°, 30°, and 60°, as well as to find out the effect of each angle on production capacity, thequality of the chopped grass, and cutting efficiency. The machine is designed using a Honda GX160gasoline engine with 5.5 hp, an 8:1 ratio pulley transmission system, a frame made of angle iron, and HSSsteel blades, with machine dimensions of 80 cm long, 45 cm wide, and 101.11 cm high. Testing was carriedout by inserting 3 kg of grass material for each blade angle variation. The test results showed that a 60°blade angle couldn’t be used because it collided with the machine body. A 15° blade angle gave aproduction capacity of 72 kg/hour with a cutting efficiency of 63% and uneven chopping quality.Meanwhile, a 30° blade angle provided the best performance, with the highest production capacity of 90kg/hour, cutting efficiency reaching 66%, and even chopped quality. Based on these results, it wasconcluded that a 30° blade tilt is the most optimal angle to use on a grass chopper machine for producinggood-quality chops more efficiently.

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