hat
Brutality nan sifas la kontak ak kote yo pote sou pati pyès sa yo fanm k'ap pile ta dwe gen ant Ra0.2 ~ Ra0.8, ki bay tout pèp la epi sèvi ak nan pwosesis la pa ka gen byen file domaj medya nan sifas la fè pitit.
eng
Roughness of the contact surface with the bearing on the grinding parts should be between Ra0.2 ~ Ra0.8, bearing the assembly and use of the process can not have sharp media damage to the bearing surface.