Abstract: Provided is a rotating body inspection apparatus for an electrification component, the rotating body inspection apparatus including a main sprocket on which a rotating body is seated and which is shaped as a disk and rotates, a sub sprocket shaped as a disk and rotating, a connection portion connecting the main sprocket to the sub sprocket, and a linear conversion portion which is connected to the sub sprocket and which converts a rotational movement into a linear movement, wherein a diameter of the sub sprocket is less than a diameter of the main sprocket.

Abstract: The present disclosure relates to a probe module for an ultrasonic inspection apparatus, which includes a lower probe module arranged below a target object, wherein the lower probe module includes: a lower housing; a lower transducer arranged in the lower housing and configured to generate ultrasonic waves toward the target object or receive ultrasonic waves, from below the target object; a lower water jacket with an internal space into which one side of the lower transducer is to be inserted, the internal space being filled with liquid; and a lower liquid injection unit configured to inject the liquid into the internal space of the lower water jacket.

Abstract: A hairpin inspection apparatus for inspecting a hairpin included in an electrification component includes an electrification block seated on a rotating device and rotated by the rotating device, a hairpin mounted on an electrification block, and a lighting unit provided on the hairpin to irradiate light to the electrification block and the hairpin, in which the lighting unit includes a light source generating light and a lens collecting the light generated from the light source.