热轧带钢轧机支撑辊上通常配备一个带有楔键(key)的滑动轴承,楔键的作用是防止锥形套筒和辊轴之间发生相对移动。然而,由于键槽的存在,将会引起套筒在载荷作用下变形。当轧制力发生变动时,就能观察到套筒的跳动,从而引起带钢厚度的有规律的变化。解决该问题的明显方法是使用无? Hot-rolled strip mills are usually equipped with a sliding bearing with a key on the back-up roll. The wedge key prevents the relative movement between the tapered sleeve and the roll shaft. However, the presence of the keyway will cause the sleeve to deform under load. As the rolling force changes, the bouncing of the sleeve can be observed, causing a regular change in strip thickness. The obvious way to solve this problem is to use nothing?