This pump is the first in the world to be used in mass-produced water-cooled workstations and is ideal for water-cooling processors and electronic components. Due to its size and performance, it can also be used in a variety of applications. This DC pump is an electronically commutated ball motor pump, with runtimes of well over 50,000 hours at 12 volts. The only moving part on a ball motor pump is a spherically shaped rotor/impeller unit supported on an ultra-hard, wear-resistant ceramic bearing ball. There is no conventional shaft with shaft bearings and shaft seals. The spherical bearing of the rotor/impeller unit on the ceramic bearing ball offers many advantages: the creation of bearing play—and thus an increase in noise—is not possible due to the principle. The pump thus remains quiet throughout its entire operating life. The bearing is self-adjusting and is lubricated directly by the pumped medium (wet rotor pump). Maintenance is therefore not necessary. Since the rotor is always held magnetically in the intended position, smaller dirt particles do not pose a problem. Blocking of the pump is normally not possible. Even after a longer standstill, a safe start is ensured. The permanent magnetic rotor/impeller unit is driven by a magnetic field generated by the surrounding stator, which is built completely around the rotor. At 38 mm, the complete pump is thus only slightly higher than the stator itself, allowing it to fit easily into all standard PC, barebone, and mini PC housings. A separate magnetic shielding is normally not necessary. The spherical motor principle enables economical operation with comparatively high performance. By varying the voltage, the DDC DC pump can be controlled easily and over a wide power range. All parts in contact with the medium are completely corrosion-resistant.