The invention relates to a comminuting machine (1, 2, 3) for comminuting material, in particular valuable materials, waste wood, and data carriers, comprising a machine frame (4), at least one comminuting rotor (5) which is rotatably mounted on the machine frame (4), and a material feed area (6). The material feed area (6) has at least one wall section (7) over which the material to be comminuted can be supplied to the at least one comminuting rotor (5) and which is designed to be stationary during a comminuting operation (35) of the comminuting machine (1, 2, 3) and can be pivoted about a rotational axis (8) during a maintenance operation (36) of the comminuting machine (1, 2, 3). Because the rotational axis (8) is designed to be releasably lockable, at least one second releasably lockable rotational axis (9) is provided together with the first rotational axis (8), and the at least one wall section (7) of the material feed area (6) can selectively be pivoted about the first or the at least one second rotatio
