RANCANG BANGUN MESIN WOOD PELLET BERPENGGERAK MOTOR BENSIN MENGGUNAKAN KEKUATAN 7 HORSE POWER

RAGIL PRIYAMBUDHI, . (2026) RANCANG BANGUN MESIN WOOD PELLET BERPENGGERAK MOTOR BENSIN MENGGUNAKAN KEKUATAN 7 HORSE POWER. Diploma thesis, UNIVERSITAS NEGERI JAKARTA.

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Abstract

Limbah batang dan ranting pohon dari Ruang Terbuka Hijau (RTH) perkotaan belum dimanfaatkan secara optimal dan sering dibuang atau dibakar, menimbulkan pencemaran lingkungan. Wood pellet merupakan solusi potensial sebagai bahan bakar biomassa ramah lingkungan dengan nilai kalor konsisten. Namun, mesin wood pellet yang ada umumnya menggunakan motor listrik dengan keterbatasan mobilitas, terutama di lokasi tanpa akses listrik stabil. Penelitian ini bertujuan merancang dan membangun mesin wood pellet berpenggerak motor bensin 7 HP yang mampu menghasilkan pellet berukuran ø8 mm x 20 mm. Metode pengembangan meliputi identifikasi masalah, studi literatur, perancangan menggunakan solidworks, perhitungan teknis sistem transmisi, hingga fabrikasi dan pengujian prototipe. Rangka menggunakan ASTM A36 steel dengan faktor keamanan 8,07. Sementara sistem transmisi dirancang dengan pulley rasio 1:2 dan roda gigi rasio 1:1,875 untuk mencapai putaran 800 rpm. Hasil penelitian menunjukkan prototipe berhasil difabrikasi sesuai desain dan memenuhi standar keamanan struktural. Namun, mesin belu mampu memproduksi wood pellet secara optimal karena torsi roller masih kurang untuk menghasilkan gaya tekan. Diperlukan optimasi karena sistem transmisi untuk meningkatkan torsi serta penyesuaian desain cetakan agar mesin dapat beroperasi dan menghasilkan wood pellet sesuai spesifikasi. Kata kunci: Biomassa, energi terbarukan, limbah kayu, sistem transmisi ***** Waste tree trunks and branches from urban green open spaces (RTH) are not optimally utilized and are often discarded or burned, causing environmental pollution. Wood pellets are a potential solution as an environmentally friendly biomass fuel with consistent calorific value. However, existing wood pellet machines generally use electric motors, which limits mobility, especially in locations without stable electricity access. This research aims to design and build a wood pellet machine powered by a 7 HP gasoline engine capable of producing pellets measuring ø8 mm x 20 mm. The development method included problem identification, literature review, design using SolidWorks, technical calculations for the transmission system, and prototype fabrication and testing. The frame uses ASTM A36 steel with a safety factor of 8.07. The transmission system is designed with a 1:2 pulley ratio and a 1:1.875 gear ratio to achieve a rotational speed of 800 rpm. The results showed that the prototype was successfully fabricated according to the design and met structural safety standards. However, the machine is not yet capable of optimal wood pellet production because the roller torque is insufficient to generate the compressive force. Optimization is required because the transmission system is needed to increase torque as well as adjustments to the mold design so that the machine can operate and produce wood pellets according to specifications. Keywords: Biomass, renewable energy, wood waste, transmission system

Item Type:	Thesis (Diploma)
Additional Information:	1). Dr. Wardoyo, M.T. ; 2). Drs. Syamsuir, M.T.
Subjects:	Teknologi dan Ilmu Terapan > Manufaktur
Divisions:	FT > D IV Teknologi Rekayasa Manufaktur
Depositing User:	Ragil Priyambudhi .
Date Deposited:	06 Feb 2026 03:30
Last Modified:	06 Feb 2026 03:30
URI:	http://repository.unj.ac.id/id/eprint/65051

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