Drive bearing (100, 200) in particular a bottom bracket, comprising: an element which is mounted to be rotatable about an axis of rotation and which comprises magnetized magnetostrictive material; wherein a torque can be applied to said element and said magnetostrictive magnetized material is formed to generate at a first position outside said element a magnetic field as a function of the torque applied; and a measuring circuit, comprising a first magnetic field sensor for detecting at least one component of a total magnetic field at said first position, wherein the total magnetic field comprises the magnetic field generated by said magnetostrictive magnetized material and an external magnetic field, and wherein said first magnetic field sensor is configured to output a first signal as a function of said at least one detected component of the total magnetic field; and a second magnetic field sensor for detecting at least one component of the external magnetic field at a second position, which differs from said first position, wherein said second magnetic field sensor is configured to output a second signal as a function of said at least one detected component of the external magnetic field; wherein said measuring circuit is configured to determine a value of the applied torque using said first and said second signal, wherein the second magnetic field sensor detects the external field when said element is in a state that is unloaded in terms of the torque, characterized in that a measured value corresponding to the detected external magnetic field is used to determine the torque until the next unloaded state. an element which is mounted to be rotatable about an axis of rotation and which comprises magnetized magnetostrictive material; wherein a torque can be applied to said element and said magnetostrictive magnetized material is formed to generate at a first position outside said element a magnetic field as a function of the torque applied; and a measuring circuit, comprising a first magnetic field sensor for detecting at least one component of a total magnetic field at said first position, wherein the total magnetic field comprises the magnetic field generated by said magnetostrictive magnetized material and an external magnetic field, and wherein said first magnetic field sensor is configured to output a first signal as a function of said at least one detected component of the total magnetic field; and a second magnetic field sensor for detecting at least one component of the external magnetic field at a second position, which differs from said first position, wherein said second magnetic field sensor is configured to output a second signal as a function of said at least one detected component of the external magnetic field; a first magnetic field sensor for detecting at least one component of a total magnetic field at said first position, wherein the total magnetic field comprises the magnetic field generated by said magnetostrictive magnetized material and an external magnetic field, and wherein said first magnetic field sensor is configured to output a first signal as a function of said at least one detected component of the total magnetic field; and a second magnetic field sensor for detecting at least one component of the external magnetic field at a second position, which differs from said first position, wherein said second magnetic field sensor is configured to output a second signal as a function of said at least one detected component of the external magnetic field; wherein said measuring circuit is configured to determine a value of the applied torque using said first and said second signal, wherein the second magnetic field sensor detects the external field when said element is in a state that is unloaded in terms of the torque, characterized in that a measured value corresponding to the detected external magnetic field is used to determine the torque until the next unloaded state.