| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a rotary encoder built in bearing unit improving rotating speed detecting accuracy or the same. SOLUTION: The diameter D of an anti-counter bore side shoulder part 51 is set between the inner diameter D1 and the outer diameter D2 of a pulse generating ring 69. Consequently, the length L of the pulse generating ring 69 in a diameter direction can be much larger than one described in a preceding technology and magnetic flux density a pole is meaningfully increased.</p> |
