Transmisi adalah suatu cara untuk menyalurkan atau memindahkan daya dari sumber daya (motor diesel, motor bensin, turbin, motor listrik,) ke mesin yang membutuhkan daya. Tujuan penelitian ini adalah mendesain dan merancang mekanisme transmisi roda gigi pada mesin uji universal sederhana. Penelitian ini menggunakan metode analitis dan studi pustaka dimana perancangan transmisi roda gigi dilakukan berdasarkan perhitungan serta menggunakan beberapa referensi-referensi yang terkait dengan perancangan. Hasil penelitian ini menunjukkan bahwa telah dilakukan perancangan transmisi roda gigi worm gear pada mesin uji universal dengan rasio roda gigi 1:50 dan daya motor listrik 0,446 kw, bahan ulir worm adalah SF 50, diameter kepala worm 39,24 mm, diameter kaki worm 28,44 mm. Sedangkan bahan worm wheel adalah peruggu, diameter kepala worm wheel 134,23 mm, diameter kaki worm wheel 119 mm.

Kata kunci: mesin uji universal, transmisi, worm gear,

Transmission is a method of distributing or transferring power from a source (diesel engine, gasoline engine, turbine, electric motor, etc). to a machine that requires power. The goal of this study was to design and test a gear transmission mechanism on a basic universal testing machine. This study employed analytical methods as well as a literature review in which the gear transmission design was carried out using calculations and several references related to the design. The results of this study indicated that a worm gear transmission design has been carried out on a universal testing machine with a gear ration of 1:50 and an electric motor power of 0,446 kW, the worm thread material was SF 50, the worm head diameter was 39,24 mm, the worm foot diameter was 28,44 mm. while the worm wheel material was bronze, the worm wheel head diameter was 134,23 mm, the worm wheel foot diameter was 119 mm. Keywords: machine universal testing machine, transmission, worm gear