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All Journal JURNAL CRANKSHAFT
Sigiet Haryo Pranoto
Program Studi Teknik Mesin, Universitas Muhammadiyah Kalimantan Timur
Control & Systems Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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EVALUASI PENGARUH GEOMETRI SUDUT MATA PISAU MESIN PENCACAH TERHADAP KUALITAS DAN DISTRIBUSI UKURAN HASIL PENCACAHAN Jeyno Raymon Kandolo; Sigiet Haryo Pranoto; Anis Siti Nurrohkayati; Ananda Sylvano
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16826

Abstract

This study aims to analyze the effect of blade edge angle geometry on the particle size distribution and quality of shredded materials, ranging from plastic to cardboard, using a rotary cutter–type shredding machine. The blade edge angles investigated in this study were 35° and 60°, with test materials consisting of polyethylene terephthalate (PET) plastic, plastic bags, and cardboard. Operating parameters of the machine, including rotational speed, number of blades, and blade thickness, were kept constant throughout the experiments. The analysis focused on shredding capacity, particle size distribution, and the quality of shredded products in terms of shape uniformity and process stability. The results indicate that the 35° blade angle produces higher shredding capacity, smaller and more uniform particle sizes, and better overall shredding quality compared to the 60° blade angle. In contrast, the 60° blade angle tends to produce longer and less uniform particles, particularly for flexible plastic materials, and increases the likelihood of material clogging during the shredding process. Based on these findings, it can be concluded that a blade edge angle of 35° is the optimal configuration for achieving efficient shredding performance and high-quality plastic output, thereby supporting recycling processes.
ANALISIS KINERJA MESIN PENCACAH SAMPAH DENGAN VARIASI KECEPATAN PUTAR MOTOR LISTRIK Zebtomen Siringoringo; Sigiet Haryo Pranoto; Anis Siti Nurrohkayati; Ananda Sylvano
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16840

Abstract

This study aims to analyze the effect of variations in the rotational speed of an electric motor on shredding capacity and the average size of shredded output in a plastic waste shredding machine. The method used is an experimental approach by conducting direct tests on a shredding machine using a single-phase electric motor with a power of 2 HP, with speed variations of 600 rpm, 900 rpm, and 1200 rpm. The test materials include plastic bottles, plastic bags, and cardboard, with a shredding time of 2 minutes for each test. The observed parameters include the mass of shredded material, shredding capacity (kg/h), and the average size of the shredded output. The results show that the highest shredding capacity for plastic bottles and plastic bags was achieved at a speed of 900 rpm, reaching 25.20 kg/h and 13.50 kg/h, respectively, while for cardboard material, the highest capacity was obtained at 600 rpm, reaching 28.59 kg/h. These findings indicate that increasing rotational speed does not always result in the highest shredding capacity for all materials, as the physical characteristics of the materials influence the shredding performance.
Co-Authors Ananda Sylvano Ananda Sylvano Anis Siti Nurrohkayati Jeyno Raymon Kandolo Zebtomen Siringoringo