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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

Abstract

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

Abstract

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.