The FANUC A06B-0075-B303 is a βiS 8/3000 AC servo motor for precision feed-axis positioning on compatible FANUC CNC machines. It combines a tapered shaft, 24VDC holding brake and β128iA absolute pulse coder.

Documented performance is 1.2kW output, 2,000rpm rated speed and 3,000rpm maximum speed. A06B0075B303 is only an auxiliary search format; identify the motor from the complete nameplate.

A06B-0075-B303 Product Specifications

βiS 8/3000 Motion Performance

The motor provides 7Nm continuous stall torque and up to 15Nm maximum torque for acceleration and positioning. Its β128iA coder returns absolute position and speed feedback. The brake holds a stopped axis and should not be used as a dynamic service brake.

B303 Compatibility and Replacement

B303 identifies the tapered-shaft, 24VDC-brake configuration. Match the complete motor number, shaft, key, flange, brake voltage, pulse coder, connectors, servo amplifier and CNC parameters. Straight-shaft, non-brake and sealed-option A06B-0075 motors are different. Confirm every suffix on the original nameplate.

Testing and Installation Notes

REACO CNC checks the nameplate, housing, shaft, bearings, insulation, windings, brake, connectors and encoder feedback. Rotation, brake release and positioning response are tested on a compatible setup as applicable. Back up servo parameters and verify alignment and brake sequencing before operation.

Related resources: FANUC servo motors and FANUC motor repair service.