Product Details

FANUC A06B-0033-B075#7008 is βi-B3/3000 AC servo motor with straight shaft and built-in holding brake, upgraded model based on βi-B2 series we listed before, compatible with FANUC βi servo amplifier and 0i-MF, 0i-MF Plus CNC systems. Compared with βi-B2/3000, this B3 version delivers higher continuous torque and heavier load capacity, suitable for feed axes with larger cutting load. The #7008 suffix stands for integrated power-off electromagnetic brake, which locks the shaft securely once servo power is cut, effectively preventing vertical Z-axis dropping on vertical machining centers and tapping machines. It adopts 200V three-phase AC power supply, rated speed 3000rpm, equipped with A32B absolute encoder, which saves axis position data and eliminates repeated homing after power restart.

This servo motor integrates stator winding, rotor assembly, high-resolution absolute encoder and spring brake inside compact aluminum housing. The A32B absolute encoder transmits high-precision angle feedback to servo drive, supporting closed-loop position, speed and torque control for CNC feed axes. The built-in brake is static holding type, only released when brake power is supplied, it is not designed for dynamic braking during high-speed movement. The motor adopts smooth straight shaft structure, matched with rigid coupling for direct connection to ball screw, which reduces backlash and improves positioning repeatability. Two independent locking connectors are arranged at the rear end, separately for power cable and encoder cable, following standard FANUC pin definition for easy 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 uses long-life grease lubrication, adapting to continuous cyclic operation. The housing is optimized for heat dissipation, stabilizing operating temperature under heavy cutting cycles. Users can adjust servo gain, soft limit and brake delay parameters on CNC to match vertical axis gravity balance and heavy-load feed motion characteristics. It is widely selected for X, Y, Z feed axes of medium-sized machining equipment requiring higher torque than B2 series motors.

It serves as a direct replacement spare part for original βi B3/3000 servo motors suffering from bearing abnormal noise, encoder signal loss, brake slip, shaft runout 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 straight shaft servo motor can restore heavy-load feed axis motion rapidly, avoid machine shutdown caused by positioning error or vertical axis sliding. It is widely used in vertical machining centers, heavy-duty tapping machines, mold CNC milling and other general precision machining equipment.