Product Details

FANUC A06B-0063-B203#0100 is βiS B6/4000 AC servo motor with keyway shaft and 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-0063-B203 base version, the #0100 suffix represents keyway shaft configuration matched with B128iA absolute encoder, designed for timing belt and pulley transmission, which delivers stable torque transmission and prevents slip under heavy cyclic cutting load. It adopts 200V three-phase AC power supply, rated speed 4000rpm, fitted with low inertia rotor for fast acceleration and deceleration. The B128iA absolute encoder retains axis position data after power-off and eliminates repeated homing operation, convenient for overseas machine maintenance and replacement.

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-driven mechanical layout. Since there is no built-in brake, this variant is generally used for horizontal X and Y feed axes; external mechanical brake must be installed if applied to vertical Z-axis. 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 brings excellent dynamic response for high-speed milling and tapping cycles, shortening machining takt time and improving contour processing consistency. Users can adjust servo gain and soft limit parameters on CNC system to match the elastic characteristics of belt transmission and high-speed feed motion requirements.

It serves as a direct replacement spare part for original #0100 coded keyway shaft βiS B6/4000 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 export high-speed vertical machining centers, multi-axis tapping machines, mold engraving equipment and other belt-driven CNC feed axis applications.