Integrated shaft bearing for a sensor

A sensor device for sensing a rotation, comprising:

• a position encoder having a shaft element extending in an axial direction and which has a first and a second shaft end, wherein the rotation to be sensed is introduced via the first shaft end, and wherein the shaft element contains a magnet element at the second shaft end,
• a sensor element for sensing the rotation of the magnet element, and
• a housing part having at least two portions that are separated from one another, wherein the shaft element of the position encoder is mounted on the first portion and the sensor element is arranged in the second portion,
• wherein the housing part and the shaft element each have (i) a first bearing portion in the region of the second shaft end which is shaped in a manner narrowing toward the shaft end and at which the shaft element bears on the housing part in order to mount the position encoder on the housing part, the first bearing portion having a substantially axially extending contact face which contacts the housing part to seal off the region of the second shaft end, and (ii) a second bearing portion between the first shaft end and the first bearing portion for radially mounting the shaft element, the second bearing portion of the shaft comprising a protrusion having a contact face, extending substantially parallel to the longitudinal axis of the shaft element, with respect to the housing part, the protrusion of the second bearing portion being separated from the first bearing portion by a lateral surface of the shaft.