RAFLY ALVARIDZI, . (2026) PEMBUATAN MESIN PENCACAH KAYU KETAPANG (TERMINALIA CATTAPA) DIAMETER 12 MM MENGGUNAKAN KAPASITAS MOTOR PENGGERAK 9HORSE POWER DAN OUTPUT 1000 RPM. Diploma thesis, UNIVERSITAS NEGERI JAKARTA.
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Abstract
Mesin wood chipper merupakan mesin yang berfungsi untuk mencacah kayu menjadi serpihan dengan ukuran tertentu guna mendukung proses pengolahan lanjutan, seperti pengomposan, bahan baku energi, maupun keperluan lainnya. Penelitian ini bertujuan untuk merancang, memfabrikasi, dan menguji kinerja mesin wood chipper yang mampu mencacah batang kayu berdiameter 12 mm secara efektif dan aman. Proses perancangan diawali dengan pembuatan desain mesin menggunakan perangkat lunak SolidWorks, dilanjutkan dengan perhitungan teknis yang meliputi gaya potong, kebutuhan torsi, dan daya mesin. Berdasarkan hasil perhitungan, diperoleh kebutuhan daya rencana sebesar 7 HP, sehingga dipilih motor bensin dengan daya nominal 9 HP untuk memberikan faktor keamanan dan cadangan daya.Perancangan komponen utama meliputi poros pisau yang dibuat dari baja karbon S45C dengan mempertimbangkan beban puntir dan lentur, sehingga diperoleh diameter poros minimum yang aman sebesar 32,92 mm. Sistem transmisi daya dirancang menggunakan pulley dan sabuk-V tipe B dengan perbandingan reduksi untuk menghasilkan putaran poros pisau sebesar 1000 RPM. Selanjutnya, proses fabrikasi dilakukan berdasarkan gambar kerja yang meliputi pembuatan rangka, poros, cover, serta perakitan seluruh komponen mesin secara bertahap dan presisi.Pengujian kinerja mesin dilakukan menggunakan bahan uji berupa kayu ketapang dalam kondisi basah dengan diameter 12 mm dan panjang 1 meter. Hasil pengujian menunjukkan bahwa mesin mampu beroperasi secara stabil selama waktu pencacahan 1 menit dan menghasilkan cacahan dengan massa sebesar 50 gram. Secara visual, hasil cacahan memiliki bentuk menyerupai serpihan dengan ukuran yang relatif seragam. Selain itu, hasil pengujian menunjukkan bahwa teknik pengoperasian, khususnya cara memasukkan kayu ke dalam corong pemasukan, sangat berpengaruh terhadap kualitas cacahan. Berdasarkan hasil perancangan, fabrikasi, dan pengujian tersebut, dapat disimpulkan bahwa mesin wood chipper yang dibuat mampu bekerja secara optimal, efisien, dan aman sesuai dengan spesifikasi yang direncanakan, sehingga layak digunakan sebagai mesin pencacah kayu skala kecil. ***** A wood chipper is a machine used to process wood into chips of a specific size to support subsequent processing, such as composting, bioenergy production, and other applications. This study aims to design, fabricate, and evaluate the performance of a wood chipper capable of processing wood branches with a diameter of 12 mm effectively and safely. The design process was initiated by developing a three-dimensional model using SolidWorks software, followed by technical calculations including cutting force, required torque, and power demand. Based on the calculation results, the required design power was determined to be 7 HP; therefore, a gasoline engine with a nominal power of 9 HP was selected to provide a safety factor and sufficient power reserve. The design of the main components includes the cutter shaft made of S45C carbon steel, which was designed by considering combined torsional and bending loads, resulting in a minimum safe shaft diameter of 32.92 mm. The power transmission system was designed using pulleys and a type-B V-belt with a reduction ratio to achieve a cutter shaft rotational speed of 1000 RPM. Subsequently, the fabrication process was carried out based on the prepared working drawings, including the manufacturing of the frame, shaft, covers, and the assembly of all machine components in a systematic and precise manner. Performance testing of the machine was conducted using wet ketapang wood as the test material, with a diameter of 12 mm and a length of 1 meter. The test results showed that the machine operated stably during a 1-minute chipping process and produced wood chips with a total mass of 50 grams. Visual observation indicated that the resulting chips had a flake-like shape with relatively uniform size. Furthermore, the results revealed that operating techniques, particularly the method of feeding wood into the hopper, significantly affect the quality of the produced chips. Based on the design, fabrication, and testing results, it can be concluded that the developed wood chipper operates optimally, efficiently, and safely in accordance with the planned specifications, making it suitable for small-scale wood chipping applications.
| Item Type: | Thesis (Diploma) |
|---|---|
| Additional Information: | 1). Dr. Ahmad Kholil, S.T., M.T. ; 2). Dr. Wardoyo, M.T. |
| Subjects: | Teknologi dan Ilmu Terapan > Teknik Mesin, Mekanika Teknik Teknologi dan Ilmu Terapan > Manufaktur |
| Divisions: | FT > D IV Teknologi Rekayasa Manufaktur |
| Depositing User: | Rafly Alvaridzi . |
| Date Deposited: | 13 Feb 2026 07:19 |
| Last Modified: | 13 Feb 2026 07:19 |
| URI: | http://repository.unj.ac.id/id/eprint/65254 |
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