Rotating apparatus capable of improving the rotation reliability even after having been downsized, and method for manufacturing the rotating apparatus

A rotating apparatus comprising:

• a base plate;
• a hub having an opening in a center wherein a recording disk is to be placed on an outer circumference of the hub;
• and
• a bearing unit configured to rotatably support the hub relative to the base plate,
• the bearing unit including:
• an outer sleeve joined to an inner circumference of the opening;
• an inner sleeve joined to an inner circumference of the outer sleeve;
• a shaft housed in the inner sleeve wherein one end of the shaft is jointed to the base plate;
• a radial dynamic pressure groove provided on at least one of an inner circumferential surface of the inner sleeve and an outer circumferential surface of the shaft;
• and
• a lubricant agent present in between the inner circumferential surface of the inner sleeve and the outer circumferential surface of the shaft,
• wherein in a joined portion of the outer sleeve and the hub, there are formed a binding region where the outer sleeve and the hub are joined together with a hardening resin present therebetween and a raised region, provided on both sides of the binding region in an axial direction of the outer sleeve, which forms a portion narrower than a gap, between the outer sleeve and the hub, corresponding to the binding region.