Product Details

FANUC A06B-0142-B675#0003 is αi A12/2000 AC servo motor with tapered shaft, built-in 24V holding brake and flying lead cable outlet, belonging to FANUC Alpha i servo series, compatible with αi servo amplifiers and FANUC 0i-MF, 0i-MF Plus CNC systems. It adopts 200V three-phase AC power supply, rated power 2.1kW, rated speed 2000rpm, stall torque 12Nm. The #0003 suffix represents flying lead configuration instead of standard quick-plug connectors, designed for machine built-in wiring layout where fixed cable routing is required. It is equipped with A64 multi-turn absolute serial encoder, which retains coordinate data after power loss and eliminates homing routine, delivering stable high-precision serial feedback for low-speed heavy cutting. The integrated spring-loaded electromagnetic brake locks the shaft immediately once power cuts off, preventing vertical axis falling for vertical machining centers and heavy mold milling machines. The tapered shaft is matched with rigid coupling to connect ball screw, minimizing transmission backlash and offering rigid torque transfer for heavy milling, boring and hard material machining. It is widely installed on Z axes and rotary fourth axes of vertical machining centers that adopt custom internal wiring and require static position holding.

This servo motor integrates stator winding, high inertia rotor assembly, A64 absolute serial encoder and spring static holding brake inside aluminum housing. The encoder transmits high-precision angle feedback signals to servo amplifier to realize closed-loop position, speed and torque control. It adopts tapered shaft for rigid coupling layout and flying lead wiring design. Users need to make terminal connection on site according to wiring diagram. The built-in brake is power-release type, only for static shaft holding instead of dynamic braking during heavy cutting operation.

The front shaft sealing structure reaches IP65 protection grade, resisting coolant splashes, cutting oil mist and fine metal dust in CNC workshops. The internal bearing set uses long-life grease lubrication to support continuous stable low-speed heavy-load operation. Its high rotor inertia provides excellent vibration suppression capacity under heavy cutting conditions, suitable for precision mold processing and repeated boring tasks. Users can adjust servo gain, soft limit and brake delay parameters on CNC system to match vertical axis gravity balance and rigid coupling heavy-load transmission characteristics.

It serves as a direct replacement spare part for original #0003 coded αi A12/2000 tapered shaft flying lead servo motors suffering from bearing abnormal noise, encoder signal loss, brake slip, shaft wear and winding burnout. Every unit will pass winding insulation test, encoder position reading test, brake holding force verification and servo amplifier matching test before shipment, ensuring stable torque output and reliable static locking performance. Replacing this servo motor can restore heavy-load stable vertical feed axis motion rapidly, avoid machine shutdown caused by cutting interruption and vertical axis sliding. It is widely deployed in vertical machining centers, mold CNC milling equipment and other rigid-coupling CNC vertical feed axis applications with custom internal wiring.