Does anyone know where I can get a part for a Sony portable CD player??

The cd player has a spindle inside which the CD sits on but I have only for 1 spring and ball baring which the CD is held on because the other 2 have flown out due to use.

Has anyone got any idea where such spindles or whatever they are called can be purchased, as the CD player is in very good working order and I wouldnt want to buy a brand new one because it has this problem.