Product Details

FANUC A06B-0142-B077 is αi A12/2000 AC servo motor with straight shaft and no built-in holding brake, 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. It is equipped with I64K serial incremental encoder that delivers stable high-precision pulse feedback for closed-loop motion control. Its smooth straight shaft is designed for direct coupling connection with ball screw, providing rigid transmission and reducing backlash during heavy load milling, boring and hard material cutting. It is widely used on X/Y main feed axes of vertical machining centers and mold processing CNC machines that pursue high transmission rigidity.

This servo motor integrates stator winding, high inertia rotor assembly and I64K serial incremental encoder 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 smooth straight shaft for rigid coupling layout. Without built-in brake, this unit cannot lock shaft position during power outage; external brake assembly must be installed if used on vertical Z-axis. Two separate connectors are reserved at the rear for power cable and encoder cable, following FANUC standard pin definition for convenient wiring and maintenance.

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 brings excellent vibration suppression capacity under heavy cutting conditions, suitable for precision mold processing and repeated boring tasks. Users can adjust servo gain and soft limit parameters on CNC system to match heavy-load low-speed feed and rigid coupling transmission characteristics.

It serves as a direct replacement spare part for original αi A12/2000 smooth straight shaft servo motors suffering from bearing abnormal noise, encoder signal loss, shaft wear and winding burnout. Every unit will pass winding insulation test, encoder position reading test and servo amplifier matching test before shipment, ensuring stable torque output and precise positioning performance. Replacing this servo motor can restore heavy-load stable feed axis motion rapidly, avoid machine shutdown caused by cutting interruption and positioning deviation. It is widely deployed in vertical machining centers, mold CNC milling equipment and other rigid-coupling CNC feed axis applications.