Product Details

FANUC A06B-0034-B175#7008 is βi-B6/2000 AC servo motor with keyway shaft and built-in holding brake, part of FANUC economical Beta servo lineup, compatible with βi servo amplifiers and FANUC 0i-MF, 0i-MF Plus CNC controllers. Compared with the straight shaft A06B-0034-B075#7008, this B175 variant comes with standard keyway on output shaft, specially designed for timing belt and pulley transmission structures, delivering stable torque transmission and avoiding slip under heavy cyclic load. The #7008 suffix denotes integrated spring-actuated electromagnetic holding brake, which locks the shaft position immediately once servo power is lost to prevent vertical Z-axis drop on vertical machining centers. It adopts 200V three-phase AC power supply, rated speed 2000rpm, fitted with A32B absolute encoder that retains position data after power outage and eliminates repeated homing.

This servo motor integrates stator winding, rotor assembly, high-resolution absolute encoder and static holding brake inside compact aluminum housing. The A32B absolute encoder sends precise angular feedback to the servo drive, supporting closed-loop position, speed and torque control for CNC feed axes. The built-in brake is power-release type, intended only for static holding rather than dynamic braking during high-speed movement. The keyway shaft design simplifies installation of synchronous pulleys and gear couplings, which is widely adopted on machine tools using belt drive layout for X and Y axes. Two independent locking connectors are arranged at the rear end, separately for power cable and 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 set uses long-life grease lubrication to sustain continuous heavy cutting cycles. The housing is optimized for heat dissipation to stabilize operating temperature under heavy load. Users can adjust servo gain, soft limit and brake delay parameters on CNC system, adapting to gravity balance of vertical axes and elastic characteristics of belt transmission. It is the preferred choice for medium-load feed axes that require belt transmission and reliable anti-slip torque transfer.

It serves as a direct replacement spare part for original keyway shaft βi B6/2000 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.