Fanuc A06B-6057 AC servo drive. CNC West offers a large inventory of 1st generation of digital Fanuc AC servo units for service exchange and outright (exchange stock permitting) sale. As well capabilities and service too fault diagnose, repair, rebuild, refurbish and test within our closed loop Fanuc test rigs. Stocks include axis amps that run model 5-0 to 30 servo motors. Covering single, dual, and triple channel amplifiers.