Design, research, and production of gear wheels for mining machines Oleksandr Ustynenko, Oleksiy Bondarenko, Sergij Klymenko, Sergij Riabchenko and Roman Protasov MATEC Web Conf., 387 (2023) 01003 Published online: 06 November 2023 DOI: 10.1051/matecconf/202338701003