Head driving device and disk apparatus

A head driving device for reciprocating a head along a guide shaft comprising:

• a shaft receiving section provided in said head, said shaft receiving section having a cutout with a first surface and a second surface for receiving said guide shaft, a distance between said first surface and said second surface being larger than a diameter of said guide shaft;
• and
• a guide shaft retainer attached to said shaft receiving section, said guide shaft retainer having a body section and a pressing section, said body section having a slide groove to slidably fit to said guide shaft, said pressing section located opposite to said first surface with respect to said guide shaft, said pressing section being elastically deformed upon contact with said guide shaft when said body section enters said cutout in a state that said guide shaft fits into said slide groove, said body section being pressed against said second surface and said first surface being pressed against said guide shaft by elastic force of said elastically deformed pressing section.