Pengupasan bawang merah pada usaha industri kecil masih dilakukan secara manual sehingga memerlukan banyakwaktu dan tenaga. Oleh karena itu, diperlukan mesin pengupas bawang merah yang kebutuhan listriknya rendah dan mudah digunakan. Penelitian ini bertujuan untuk melakukan kegiatan pabrikasi mesin pengupas bawang di PT Bahagia Jaya Sejahtera dengan menggunakan konsep desain dan pabrikasi mesin. Alat yang digunakan merupakan peralatan perbengkelan yang menunjang pembuatan mesin pengupas bawang. Adapun bahan yang digunakan adalah pelat baja tahan karat dan besi siku. Proses produksi berlangsung setelah proses desain selesai dan rancangan mesin telah disetujui. Proses produksi meliputi kegiatan pembuatan rumah pencacah, unit pengumpan (inlet), unit pengeluaran (outlet), dan rangka mesin. Setelah itu, semua bagian mesin disusun dan dilakukan kegiatan finishing. Sebelum mesin tersebut didistribusikan, dilakukan uji fungsional alat untuk mengetahui performa mesin tersebut. Hasil uji fungsional dilakukan tanpa beban dan dengan beban. Hasil uji tanpa beban menunjukkan bahwa setiap bagian mesin bekerja dengan baik. Hasil uji fungsional dengan beban menunjukkan bahwa perlu beberapa perbaikan komponen untuk meningkatkan kemampuan mesin pengupas bawang.

Shallot is widely used in daily life. Its demand tends to increase even though Indonesia is still facing global pandemic due to Covid-19 outbreak. Before processing, its outer layer should be removed. However, it is time and energy consuming. Therefore, a shallot dehuller machine with theoretical capacity of 20 kg/h was manufactured to increase peeling capacity. Various tests were conducted to examine the machine performance. The objectives of the research were to conduct performance test by identifying and evaluating mechanical aspects and providing recommendations after the tests concluded. An explanatory descriptive analysis had been chosen to observe, measure, and calculate the data. Results of performance test indicated that while the actual capacity was 14.52 kg/h, its efficiency was 71.44%. The shelling yield was around 36.29%. During the test, the noisiness also measured which was about 88.4 dB. Moreover, motor and engine vibration were also measured. The results were 6.48 and 6 Hz of motor and engine vibration (without load). Furthermore, motor and engine vibration with load were about 5.96 and 5.56 Hz, respectively. Machine performance was relatively moderate. On the contrary, due to low shelling yield, further modification is needed to achieve better results.