Patent ID: 6741073
Filing Date: 2004-05-25
Classification: F16C,G01P

Abstract:
A bearing provided with a rotation sensor comprising an inner ring, an outer ring and a plurality of rolling elements stored between said inner ring and said outer ring and storing a sensor detecting the rotational speed of a rotor so that one of said inner ring and said outer ring forms a rotating bearing ring and the other one of said inner ring and said outer ring forms a fixed bearing ring, further comprising:a pulser ring mounted on an end of said rotating bearing ring; a sensor mounted on said fixed bearing ring in opposition to said pulser ring, wherein the sensor and the pulsar ring are arranged along the radial direction of the outer ring and the inner ring; and a magnetic bypass ring consisting of a magnetic substance arranged between said rolling elements and said sensor in an annular space defined between said inner ring and said outer ring for forming a magnetic path.