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All Journal Journal La Multiapp International Journal of Business and Quality Research
Franklin Taruyun Hudeardo Sinaga
Program Studi Teknik Mesin, Jurusan Teknik Mesin, Politeknik Negeri Medan
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Engineering

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Design and Performance Analysis of a SolidWorks-Based Disk Mill Coffee Grinder for MSMEs Franklin Taruyun Hudeardo Sinaga; Eka Putra Dairi Boangmanalu; Jandri Fan HT Saragi; Angga Bahri Pratama; Al Qodry
International Journal of Business and Quality Research Vol. 4 No. 02 (2026): April-June, International Journal of Business and Quality Research (IJBQR)
Publisher : Citakonsultindo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijbqr.v4i02.3305

Abstract

This study presents the design, fabrication, and performance analysis of a SolidWorks-based disk mill coffee grinder specifically developed for Micro, Small, and Medium Enterprises (MSMEs) in Indonesia's expanding coffee industry. Addressing the technological gap between industrial-scale equipment and small-enterprise operational constraints, the research employed parametric 3D modeling and virtual assembly simulation to optimize machine configuration prior to physical fabrication. The design integrates a 5.5 HP gasoline engine with a 3:1 pulley reduction system, angle iron frame structure (600×600×730 mm), and adjustable pin-type grinding disks to achieve targeted processing capacity and particle uniformity. Performance testing demonstrated that the machine successfully processes 1 kg of roasted coffee beans in approximately 8 minutes, yielding a theoretical throughput of 30 kg/hour with consistent particle distribution suitable for various brewing methods. Material loss was maintained below 2%, while operational vibration and noise levels remained within acceptable limits for workshop environments. The SolidWorks-driven design methodology significantly reduced material waste and iterative physical modifications by enabling early detection of interference conflicts and spatial optimization during the digital prototyping phase. These findings confirm that CAD-integrated engineering approaches can effectively support the development of cost-effective, maintainable, and scalable processing equipment tailored to MSME requirements. The resulting disk mill configuration offers a practical solution for enhancing product consistency, operational efficiency, and competitive positioning within Indonesia's decentralized coffee value chain, while providing a replicable framework for localized agricultural machinery innovation.
Efficiency and Performance Analysis of the Design and Construction of a 30 Kg/Hour Coffee Grinding Machine Franklin Taruyun Hudeardo Sinaga; Jandri Fan HT Saragi; Eka Putra Dairi Boangmanalu; Angga Bahri Pratama; Sahat Sahat
Journal La Multiapp Vol. 7 No. 3 (2026): Journal La Multiapp
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallamultiapp.v7i3.1416

Abstract

This study aims to evaluate the performance of a disk mill coffee grinding machine with a design capacity of 30 kg per hour for small and medium scale coffee processing. The machine was developed as a practical gasoline powered grinder to support coffee processing activities, particularly in areas where access to electricity may be limited. A performance test was conducted using roasted coffee beans with three input loads, namely 500 g, 750 g, and 1000 g. The observed parameters included grinding time, grinding capacity, product yield, residual material, material loss, material conversion efficiency, energy efficiency, and grinding quality based on particle size distribution. The results show that the machine achieved an average grinding capacity of 29.68 kg per hour, which is close to the intended capacity of 30 kg per hour. The average product yield and material conversion efficiency reached 94.55 percent, while the average material loss was 1.11 percent. However, residual material remained at 4.00 percent, indicating that the grinding chamber and discharge system still require improvement. The energy efficiency was reported at 73.8 percent, although the engine power specification needs further clarification. In terms of grinding quality, 70 percent of the particles were within the desired range of 500 to 700 micrometers. These findings indicate that the machine is technically feasible for small scale coffee production, but further refinement is needed to improve material discharge, reduce residual particles, and strengthen particle size consistency.
Co-Authors Al Qodry Angga Bahri Pratama Angga Bahri Pratama Eka Putra Dairi Boangmanalu Eka Putra Dairi Boangmanalu Jandri Fan HT Saragi Jandri Fan HT Saragi Sahat Sahat