Magnetization Of A Hollow Shaft

An apparatus for magnetizing a ferromagnetic, electrically conductive hollow shaft, the apparatus comprising:

• an electrically conductive rod-like element for generating at least one magnetic field via an internal contact device arranged thereon, the internal contact device used for contacting with an inner contact region on an inner surface of the hollow shaft;
• an external contact device for contacting with an outer contact region on an outer surface of the hollow shaft;
• a current source for generating a current pulse through the rod-like element, the internal contact device, and the external contact device, and also through the hollow shaft between the inner and outer contact regions;
• wherein the current source has a first pole and a second pole, wherein an electrical polarity of the first pole is opposite to the electrical polarity of the second pole;
• wherein the first pole of the current source is connected to or adapted to be connected to at least one current supply contact point of the rod-like element;
• and
• wherein the second pole of the current source is connected to or adapted to be connected to the external contact device.

A method of magnetizing a ferromagnetic, electrically conductive hollow shaft, the method comprising:

• inserting an electrically conductive rod-like element, which has an internal contact device arranged thereon, into a hollow space of the hollow shaft such that the rod-like element is arranged on and along an axis of the hollow shaft;
• contacting the internal contact device with an inner contact region on an inner surface of the hollow shaft;
• contacting an external contact device with an outer contact region on an outer surface of the hollow shaft;
• generating a current pulse through the rod-like element, the internal contact device, and the external contact device, and also through the hollow shaft between the inner and outer contact regions, the hollow shaft being magnetized with the thus generated magnetic field of the rod-like element through which the current flows.