A servo control apparatus for a linear motor comprises a position feedback device, a driver and a position compensating device that are connected with one another. An intermediate wheel connects the annual wheel to the date ring at the end of each month. The flexure is connected to the load beam at a first fixing point 102a and a second fixing point 102b. The stainless steel region can have a thickness of about 1 \u03bcm to about 250 \u03bcm, and a stainless steel composition that is approximately consistent across the thickness of the stainless steel region. Accordingly, a battery received in the battery tray can be uniformly cooled without temperature difference and degradation caused by dust and moisture.