Abstract: A ball mill is provided comprising at least two milling cup retainers arranged on a machine base plate, each milling cup retainer being designed for a milling cup clamped in the milling cup retainer in a lying position, each milling cup having end-face milling cup ends and a filling of balls as milling bodies and comprising a drive that causes an out-of-phase rotational motion between the milling cup retainers.

Abstract: Rotor mill for laboratory operation, comprising a rotor coupled to a drive motor as a milling tool, a ring sieve (28) surrounding the milling chamber (25) of the rotor mill (18) and an annular connecting container (26) for the ground milling material, which collecting container is arranged on the outer circumference of the ring sieve (28) and can be inserted into the housing of the rotor mill and is provided with a cover (29), the milling unit comprising the rotor (18), the ring sieve (28) and the collecting container (26) being closable by a housing cover (15) having a milling material inlet opening (17), is characterized in that at least one component of the milling unit and/or of the rotor mill that directly or indirectly surrounds the milling chamber (25) of the rotor (18) is designed for conducting and/or accommodating a cooling medium and/or for cooling by means of a gaseous cooling fluid flowing around on the outside, said gaseous cooling fluid having been introduced into the housing.

Abstract: Ball mill (10) comprising at least two milling cup retainers (13) arranged on a machine base plate (12), each milling cup retainer being designed for a milling cup (23) clamped in the milling cup retainer in a lying position, each milling cup having end-face milling cup ends and a filling of balls as milling bodies and comprising a drive that causes a rotational motion of the milling cup retainers (13) characterized in that each of the milling cup retainers (13) arranged in pairs is put in restraint-guided circular motion, oriented parallel to the plane of the machine base plate (12) by means of the drive via two eccentric shafts (25) connected to the milling cup retainers (13) on faces opposite to each other in relation to an axis of symmetry of the milling cup (23), a counterweight (28) being arranged on each of the two eccentric shafts (25) associated with a respective milling cup retainer (13) and passing through the machine base plate (12), below the machine base plate, and on the face of the eccentric s