Patent ID: 6817774
Filing Date: 2004-11-16
Classification: F16C,Y10S,Y10T

Abstract:
A method for automatically dynamically adjusting prestressed bearings of a shaft comprising the steps of:a) forming a sleeve assembly comprising an outer sleeve and a first inner sleeve fitted together, b) selecting a thermal expansion coefficient of the outer sleeve larger than that of the first inner sleeve; c) machining surfaces of the outer and the first inner sleeves for making an inner diameter of the outer sleeve smaller than an outer diameter of the first inner sleeve; d) heating the outer sleeve at a predetermined temperature for expanding the inner diameter thereof to be larger than the outer diameter of the first inner sleeve prior to putting the outer sleeve onto the first inner sleeve; e) decreasing temperature of the outer and the first inner sleeves for securing them together; and f) mounting the sleeve assembly onto the shaft prior to sandwiching the sleeve assembly between the bearings, thereby exerting a predetermined prestress on each of the bearings.