Determining the residual resource of the hammer crushers’ rotor bearings Nail R. Adigamov, Rafis R. Shaikhutdinov, Ildus H. Gimaltdinov, Rishat R. Akhmetzyanov and Rafik S. Basyrov BIO Web Conf., 17 (2020) 00239 Published online: 28 February 2020 DOI: 10.1051/bioconf/20201700239