Pinion shaft bearing arrangement

A pinion shaft bearing arrangement, comprising:

• a pinion shaft housing;
• at least two roller bearings, wherein each of the at least two roller bearings includes at least one rolling element;
• a pinion shaft, which is mounted in the pinion shaft housing by means of the at least two roller bearings, wherein the pinion shaft bearing housing is a bearing assembly with bearing surfaces, formed on the inner periphery, for the rolling elements of the at least two roller bearings;
• a sealing element, wherein the pinion shaft housing tightly seals towards the pinion shaft by means of the sealing element;
• a first lubricant duct, wherein the first lubricant duct extends into the region between the at least two roller bearings;
• and,
• a second lubricant duct, where the second lubricant duct extends into the region in front of the sealing element.

A drive system, comprising:

• an electric motor, comprising:
• an outputting hollow motor shaft;
• a pinion shaft bearing arrangement;
• and,
• a differential, which is driven by means of the pinion shaft, which is driven by the electric motor, wherein the pinion shaft is arranged concentrically in the motor shaft;
• and the bearing assembly is tightly sealed and connected to a differential housing, which encloses the differential, by means of a sealing element.