The A06B6064H315#H550 is in stock. We offer service exchange, 24 hour repair service; as well vaious parts such as the control cards and transistor modules. If you require immediate exchange contact us for your desired shipping of this part to your facilities. If not so urgent then we can offer a quote upon physical inspection of your AC spindle servo unit. However we can offer repair this spindle drive if time is not such an important consideration. Contact us for more information about exchange, repair or parts for this spindle unit.