A circuit board (4) for connecting a deformation sensor (16, 18), which is provided on a radial outer side of a rolling bearing outer ring (6), to a signal-processing circuit (28), the circuit board including—a cylindrical support plate (20) having a cylinder opening in which the rolling bearing outer ring (6) can be accommodated concentrically to said cylindrical support plate (20), —an electrical contact pad (22) on the cylindrical support plate (20) for electrical contacting with the deformation sensor (16, 18) and—an electrical strip conductor (26) which is electrically connected to the electrical contact pad (22) and is designed to receive signals from the deformation sensor (16, 18) and convey them to the signal-processing circuit (28).