Patent ID: 6143425
Filing Date: 2000-11-07
Classification: C21D,C22C,F16C,Y10T

Abstract:
A rolling device comprising:an outer member; an inner member; and a plurality of rolling elements arranged between the outer and inner members, the outer member having a first contact surface which contacts the rolling elements, the inner member having a second contact surface which contacts the rolling elements, each of the rolling elements rolling against the first and second contact surfaces, wherein at least one of the outer member, inner member, and rolling elements is formed of steel containing:C of less than 0.6 wt %; Cr of 10.0 wt % to 22.0 wt %;Mn of 0.1 wt % to 1.5 wt %; Si of 0.1 wt % to 2.0 wt %;N from 0.05 wt % to less than 0.2 wt %; Mo of 0 to 3.0 wt %; and V of 0 to 2.0 wt %; and the balance Fe and inevitable impurities, the steel satisfying C %+N %.gtoreq.0.45 wt %.