Abstract: An apparatus for manufacturing and/or treating a material web, in particular a paper or board web, having a roll with bearing journals which are provided at the ends, a roll frame having bearings, in which the roll is mounted with its bearing journals so as to be rotatable about its longitudinal axis, and having a motor which is plugged onto a bearing journal and is carried by the bearing journal, the motor being clamped with respect to the bearing journal in order to avoid roundness and vibration problems, the clamping length being at least one tenth of the length of the motor shaft. The invention also relates to a method for attaching a drive motor to a roll or for retrofitting the drive motor.

Abstract: An apparatus for manufacturing and/or treating a fiber material web, in particular a paper or board web, having a roll with a bearing journal which is present at one roll end, a frame for mounting the roll rotatably and a hollow-shaft motor which is plugged onto the bearing journal of the roll, the motor being connected to the roll frame via a motor fastener. The invention also relates to a method for connecting a hollow-shaft drive motor to a roll or for changing or retrofitting the drive of the roll of a machine for manufacturing and/or treating a material web, in particular a paper or board web.

Abstract: A journal of a drying cylinder or the like, in a paper, cardboard or coating machine, is mounted in a bearing housing which is supported in fixed position on a frame. A hollow, cylindrically widened housing for an electric drive motor is formed as an extension of the bearing housing toward the drying cylinder. This motor housing, together with the bearing housing, forms a continuous outer surface for the drive system. The motor is a permanent-magnet motor whose stator has electromagnet poles which are arranged in the hollow cylindrical housing. Its rotor has permanent-magnet poles, which form a hollow cylindrical ring mounted on the circumference of the journal. The drive system consists of only a few parts, requires only a small amount of space for installation, and is easily and inexpensively serviceable.