Product Details

FANUC A06B-0062-B203#0100 is βiS B4/4000 AC servo motor with keyway shaft, no built-in holding brake, belonging to FANUC high-response Beta iS servo series, compatible with βiS servo amplifiers and FANUC 0i-MF, 0i-MF Plus CNC systems. Compared with the straight shaft A06B-0062-B203 base version, the #0100 suffix stands for keyway shaft configuration and B128iA absolute encoder package, designed for timing belt and pulley transmission structures to transmit torque steadily and prevent slip under cyclic load. It adopts 200V three-phase AC power supply, rated speed 4000rpm, equipped with low inertia rotor for rapid acceleration and deceleration, suitable for high-speed milling and tapping machine X, Y horizontal feed axes. The B128iA absolute encoder keeps axis position data after power-off, eliminating repeated homing operation.

This servo motor integrates stator winding, low-inertia rotor assembly and B128iA absolute encoder inside compact aluminum housing. The B128iA absolute encoder feeds back high-precision angle signal to servo amplifier, supporting high-bandwidth closed-loop position, speed and torque control for CNC feed axes. The keyway shaft is matched with standard synchronous pulley for belt drive layout. Since there is no built-in brake, this variant cannot lock the shaft when power cuts off; external mechanical brake is required for vertical Z-axis application. Two independent locking connectors are arranged at the rear end, separately for power cable and encoder cable, following FANUC standard pin definition for convenient wiring and maintenance.

The front shaft sealing structure reaches IP67 protection grade, resisting coolant splashes, cutting oil mist and fine metal dust in metal cutting workshops. The internal bearing assembly uses long-life grease lubrication to sustain continuous high-speed reciprocating movement. Low inertia rotor is the core advantage for short-cycle tapping and high-speed engraving, improving processing efficiency and contour accuracy. Users can adjust servo gain and soft limit parameters on CNC system to adapt to the elastic characteristics of belt transmission and high-speed feed motion.

It serves as a direct replacement spare part for original keyway shaft βiS B4/4000 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 high-speed regulation and precise positioning performance. Replacing this servo motor can restore fast heavy-load feed axis motion rapidly, avoid machine shutdown caused by positioning deviation. It is widely deployed in high-speed vertical machining centers, multi-axis tapping machines, mold engraving equipment and other belt-driven CNC feed axis applications.