| 摘要 |
<p>PURPOSE:To prevent a malfunction from being generated due to a fact that dust goes in between a pulse generator and a pulse detector, by providing the pulse generator and the pulse detector on a bearing device. CONSTITUTION:Between an inner ring 2 and an outer ring 1, a ball 3 being a rolling element is interposed in two lines in the peripheral direction, and the inner ring 2 and the outer ring 1 are supported so that a relative rotation can be executed. A space part between the inside peripheral part of the outer ring 1 and the outside peripheral part of the inner ring 2 is sealed up tightly by a seal member 4 being a sealing-up means, in a shape containing the ball 3 in the inside, and a sealed-up space 5 is formed. On the outside peripheral part of the inner ring 2 of such a sealed-up space 5, a pulse generator 6 on which plural pieces of projecting part consisting of a magnetic material are provided is arranged, and a pulse detector 7 is attached to the inside peripheral surface of the outer ring 1.</p> |
