FANUC A20B-2901-0982 is an analog spindle control module designed for compatible FANUC CNC systems, including Series 16 and 18 configurations. Identified as an F16B spindle module, it contains the analog spindle LSI and provides spindle-control functionality within the CNC system. The module is used in compatible analog spindle architectures and is suitable for CNC spindle-control board replacement, maintenance, and repair. Verify the CNC model, spindle interface, and installed module configuration before replacement. [stock available]