FANUC βiS12/3000 AC Servo Motor With Brake P/N A06B-0078-B403

Technical Specifications

Model:A06B-0078-B403

Brand:FANUC

Series:βiS12/3000

Rated power:1.8kW

Rated speed:3000rpm

Stall torque:11Nm

Rated current:8.6A

Voltage:3-phase,amplifier supply 200~240VAC

Frequency:200Hz

Pole:8 poles

Encoder:BiA128 absolute encoder

Shaft:taper shaft

Brake:Built-in 24VDC electromagnetic holding brake

Insulation class:F

Protection class:IP67

Weight:12.1kg

Dimensions:140mm ×140mm ×265mm

Certification:CE

System compatibility:βiS series AC servo motor for FANUC 0iD / 0iMF CNC system,matched with βiSV servo amplifier,used for CNC machine heavy-load vertical feed axes.

Function:Permanent magnet AC servo motor for CNC feed axis. Realizes closed-loop position and speed control via built-in BiA128 absolute encoder. Absolute encoder retains position data after power cycle, no homing required. Integrated electromagnetic holding brake locks shaft upon power loss to prevent vertical axis sliding. Taper shaft ensures high-precision coupling connection.

Installation:Flange mount,connect power cable,encoder cable and brake control cable to servo amplifier.

Interface:

‑3-phase power connector

‑BiA128 absolute encoder signal connector

‑24VDC brake power terminal

‑Motor housing mounting flange

‑Taper output shaft

Circuit feature:Built-in permanent magnet rotor,encoder signal sampling circuit,thermal temperature detection circuit,brake coil drive circuit.

Feature:FANUC βiS large inertia servo motor with holding brake. Absolute encoder eliminates homing operation after power restart. Brake only for static holding,not for dynamic braking. Taper shaft provides high concentricity and transmission rigidity. Common faults:encoder damage,coil burnout,bearing wear,brake pad aging. Verify CNC controller and servo amplifier model before replacement.

Diagnostic:Motor or encoder failure triggers axis servo alarm,overload or position deviation alarm;brake malfunction leads to vertical axis drop or brake release alarm.

Built‑in function

A06B-0078-B403 βiS12/3000 servo motor provides high-torque stable precision closed-loop motion control and power-off holding function for heavy load CNC machine vertical feed axis. Widely used for CNC machine spare‑part replacement.

Product Brief

A06B-0078-B403 belongs to FANUC A06B servo motor spare parts family,1.8kW βiS12/3000 motor with built-in holding brake,taper shaft and BiA128 absolute encoder. Verify CNC system,servo amplifier and cable compatibility before ordering. Check winding insulation,encoder,bearing and brake function during commissioning. Widely applied for CNC equipment maintenance and renovation. ESD anti‑static protection shall be followed during installation.