Product Details

FANUC A06B-0033-B175#7008 is βi-B3/3000 AC servo motor with keyway shaft and built-in holding brake, belonging to FANUC economical Beta servo series, matching βi servo amplifiers and FANUC 0i-MF, 0i-MF Plus CNC systems. Comparing with the straight shaft A06B-0033-B075#7008, this B175 variant adopts standard keyway shaft, designed for belt pulley and gear coupling installation, which can transfer torque steadily and prevent slipping under heavy cyclic load. The #7008 suffix means integrated spring-powered electromagnetic brake, which locks the shaft immediately once servo power cuts off and avoids vertical Z-axis dropping on vertical machining centers. It runs on 200V three-phase AC, rated speed 3000rpm, fitted with A32B absolute encoder to preserve position data without repeated homing after power restart.

This servo motor integrates stator winding, rotor assembly, high-resolution absolute encoder and static holding brake inside compact aluminum housing. The A32B absolute encoder feeds back precise angular position signal to servo amplifier, supporting closed-loop position, speed and torque control for CNC feed axes. The built-in brake is power-release type, only used for static shaft holding instead of dynamic braking during high-speed movement. The keyway shaft structure is well suited for belt-driven feed axes, which is widely used on machine tools that adopt timing belt transmission to simplify mechanical layout. Two separate locking connectors are arranged at the rear end, one for power cable and one for encoder cable, following standard FANUC 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 metal cutting workshops. The internal bearing assembly adopts long-life grease lubrication to adapt to continuous cyclic operation. The housing structure is optimized for heat dissipation to keep stable temperature under heavy cutting cycles. Users can adjust servo gain, soft limit and brake delay parameters on CNC system, adapting to gravity balance of vertical axes and the elastic characteristics of belt transmission. It is a preferred selection for medium-load feed axes that use belt or gear transmission and need reliable anti-slip torque transmission.

It serves as a direct replacement spare part for original keyway shaft βi B3/3000 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 speed regulation and reliable static locking performance. Replacing this keyway shaft servo motor can quickly restore heavy-load feed axis motion, avoid machine halt caused by positioning deviation or vertical axis sliding. It is widely used in vertical machining centers, heavy tapping machines, mold milling and other belt-driven CNC feed axis applications.