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Impact of Stroke Length Variation on Speed Efficiency in an Authomatic Tofu Extract Filtering Machine

Rekayasa · Vol. 20 No. 2 (2022) · hlm. 100–107

DOI
10.15294/rekayasa.v20i2.11941
ISSN
2527-6964, 0216-6631
Terbit
2022-11-18
Penerbit
Universitas Negeri Semarang
Bahasa
eng

Abstrak

In the tofu industry, especially at the home-scale "Tahu Pak Muhson," production remains largely manual, with traditional filtering methods. To enhance efficiency, a machine was designed to filter tofu juice, incorporating various crankshaft step lengths to optimize performance. This study aims to assess the impact of different step lengths on filtration time, tofu yield, and quality. Using a descriptive experimental research method with a quantitative approach, the independent variable is crankshaft stroke length (140, 200, 260 mm), while dependent variables include filtration time, yield, and tofu quality. The control variable is a consistent 10kg soybean input. Results indicate that a 260mm stroke length provided the quickest filtration, averaging 524.3 s, compared to 726 s for 140mm and 620 seconds for 200 mm. Yield for the 140mm stroke was 46%, 45.5% for 200mm, and 44.5% for 260 mm. Tofu quality showed minimal variation across different lengths, although the 260 mm stroke length produced tofu with a slightly coarser texture and a faster smell development. The findings demonstrate that step length impacts filtering efficiency and yield, with potential implications for tofu production scalability.

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  • State University of Semarang
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Nana Kariada Tri MartutiState University of Semarang2
Fulia Aji GustamanAfiliasi tidak diketahui2
Dwi WidjanarkoAfiliasi tidak diketahui2
Wahid Akhsin Budi Nur SidiqState University of Semarang1
Isti HidayahAfiliasi tidak diketahui1
RR. Sri Ratna RahayuAfiliasi tidak diketahui1
Dhita Prasisca MutiatariState University of Semarang1
Satya Budi NugrahaAfiliasi tidak diketahui1
Antari Ayuning ArsiAfiliasi tidak diketahui1
Dadan Budiansyah BudiansyahAfiliasi tidak diketahui1
Bunyamin BunyaminState University of Semarang1
Margunani MargunaniAfiliasi tidak diketahui1
Margareta RahayuningsihAfiliasi tidak diketahui1
Dadan BudiansyahAfiliasi tidak diketahui1
Widi WidayatAfiliasi tidak diketahui1
Fidia FibrianaState University of Semarang1
Nurdian SusilowatiAfiliasi tidak diketahui1
Sunyoto SunyotoAfiliasi tidak diketahui1
Dewi LarasatiAfiliasi tidak diketahui1
Sonika MaulanaAfiliasi tidak diketahui1
Deky Aji SusenoAfiliasi tidak diketahui1
Nanang IndardiAfiliasi tidak diketahui1
Nofrizal Fajar Satria PratamaAfiliasi tidak diketahui1
Bhramantya Panji SAfiliasi tidak diketahui1
Muhammad Iqbal Pujo SaktiAfiliasi tidak diketahui1
Ahmad ShokibAfiliasi tidak diketahui1
Miftachul HudaAfiliasi tidak diketahui1
Deni Fajar FitriyanaAfiliasi tidak diketahui1
Athallahariq Fadhil Kamal PutraAfiliasi tidak diketahui1
Ridho Fachrur Ro'isAfiliasi tidak diketahui1
Lutfhi AbdullahAfiliasi tidak diketahui1
Rahmat Doni WidodoAfiliasi tidak diketahui1
Muhammad Gifani Al QadryAfiliasi tidak diketahui1
Wirawan SumbodoAfiliasi tidak diketahui1
Ari Dwi Nur Indriawan MusyonoAfiliasi tidak diketahui1
Rizki SetiadiAfiliasi tidak diketahui1
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Sumber metadata: OAI-PMH (metadata jurnal) https://journal.unnes.ac.id/journals/rekayasa/oai, pertama di-harvest 6 Nov 2026, terakhir terlihat 8 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en">Impact of Stroke Length Variation on Speed Efficiency in an Authomatic Tofu Extract Filtering Machine</dc:title>
	<dc:creator xml:lang="en">Saputro, Danang Dwi </dc:creator>
	<dc:creator xml:lang="en">Pangestu, Wahyu Dwi </dc:creator>
	<dc:subject xml:lang="en">crankshaft stroke length</dc:subject>
	<dc:subject xml:lang="en">filtration efficiency </dc:subject>
	<dc:subject xml:lang="en">soybean processing </dc:subject>
	<dc:subject xml:lang="en">tofu texture</dc:subject>
	<dc:subject xml:lang="en">yield </dc:subject>
	<dc:description xml:lang="en">In the tofu industry, especially at the home-scale "Tahu Pak Muhson," production remains largely manual, with traditional filtering methods. To enhance efficiency, a machine was designed to filter tofu juice, incorporating various crankshaft step lengths to optimize performance. This study aims to assess the impact of different step lengths on filtration time, tofu yield, and quality. Using a descriptive experimental research method with a quantitative approach, the independent variable is crankshaft stroke length (140, 200, 260 mm), while dependent variables include filtration time, yield, and tofu quality. The control variable is a consistent 10kg soybean input. Results indicate that a 260mm stroke length provided the quickest filtration, averaging 524.3 s, compared to 726 s for 140mm and 620 seconds for 200 mm. Yield for the 140mm stroke was 46%, 45.5% for 200mm, and 44.5% for 260 mm. Tofu quality showed minimal variation across different lengths, although the 260 mm stroke length produced tofu with a slightly coarser texture and a faster smell development. The findings demonstrate that step length impacts filtering efficiency and yield, with potential implications for tofu production scalability.</dc:description>
	<dc:publisher xml:lang="en">Universitas Negeri Semarang</dc:publisher>
	<dc:date>2022-11-18</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.unnes.ac.id/journals/rekayasa/article/view/11941</dc:identifier>
	<dc:identifier>10.15294/rekayasa.v20i2.11941</dc:identifier>
	<dc:source xml:lang="en">Rekayasa; Vol. 20 No. 2 (2022); 100-107</dc:source>
	<dc:source>2527-6964</dc:source>
	<dc:source>0216-6631</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.unnes.ac.id/journals/rekayasa/article/view/11941/1968</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2022 Rekayasa : Jurnal Penerapan Teknologi dan Pembelajaran</dc:rights>
</oai_dc:dc>