An apparatus for monitoring the state of rotation of a cutting roll assembly of a shield tunneling machine and the cutting roll assembly for a shield tunneling machine

For monitoring the state of rotation of a cutting roller (5) of a shield tunneling machine is a compactly constructed monitoring device (6) is provided, which in a clamping device (15) for securing the cutting roller (5) is integrated. A sensor module (33) of the monitoring device (6) is non-contact, but close the cutting roller (5) disposed adjacent, so that a via in the cutting roller (5) designed pulse generator (34) generated rotational state of the cutting roller (5) under the shield tunneling given harsh environmental conditions can be reliably ensured.