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Fanuc part number decoder

Enter a Fanuc part number (A06B, A20B, A860…) to see its category and series, how it's written, and whether we have it in stock.

How a Fanuc part number is built

Fanuc specifications ("drawing numbers") follow one pattern across motors, drives, boards and cables:

A06B-6114-H104#H580

  • First block: the product category (A06B = motors and drives, A20B = circuit boards, A860 = encoders).
  • Second block: the product series (6114 = αi servo amplifier module).
  • Third block: the specific type or rating within that series.
  • # suffix (not always present): variant or specification. For a direct swap it should match.

On A06B-6xxx amplifiers, the H at the start of the third block marks the unit type, and the digits after it the rating. The exact rating and axis count are on the unit's label. Circuit boards also carry a separate board version letter that can matter for compatibility.

This tool decodes to category and series. Fanuc doesn't publish a full key for the third block. For the exact rating or a compatible alternative, send us the number.

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Fanuc prefixes the decoder knows

Where two rows match, the longer (more specific) prefix wins.

CNC controls

PrefixFamilyWhat it is
A02BCNC control unitCNC units and control assemblies (complete controls, control sections, option assemblies).
A03BI/O moduleI/O Unit modules and distributed I/O for Fanuc controls.

Robots

PrefixFamilyWhat it is
A05BRobot componentRobot parts: teach pendants, robot controller and mechanical unit components.

Motors & drives

PrefixFamilyWhat it is
A06BMotor or driveServo and spindle motors, amplifiers and power supplies.
A06B-0AC servomotorAC servomotors (α, αi, β, βi series). The model, e.g. αiF 8/3000, is on the motor's nameplate.
A06B-1AC spindle motorAC spindle motors (α, αi series).
A06B-2AC servomotorAC servomotors of the newer αi-B / βi-B series.
A06B-6Amplifier / drive moduleServo amplifiers, spindle amplifiers and power supply modules.
A06B-6087α power supply module (PSM)Power supply module of the α series drive system.
A06B-6088α spindle amplifier module (SPM)Spindle amplifier module of the α series.
A06B-6096α servo amplifier module (SVM)Servo amplifier module of the α series.
A06B-6110αi power supply module (PSM)Power supply module of the αi series drive system.
A06B-6111αi spindle amplifier module (SPM)Spindle amplifier module of the αi series.
A06B-6114αi servo amplifier module (SVM)Servo amplifier module of the αi series (1, 2 or 3 axes).
A06B-6117αi servo amplifier module (SVM)Servo amplifier module of the αi series.
A06B-6130βi servo amplifierβiSV servo amplifier.

Circuit boards

PrefixFamilyWhat it is
A16BPrinted circuit boardPCBs: main boards, axis cards, power and I/O boards.
A17BPrinted circuit boardPCBs of older control generations.
A20BPrinted circuit boardPCBs: main boards, CPU cards, axis cards, memory and option boards.

Components

PrefixFamilyWhat it is
A50LPower semiconductor moduleTransistor / IGBT power modules used inside amplifiers.
A61LDisplay unitCRT and LCD display units.
A660CableCables: feedback, power, I/O Link and communication cables.
A860Encoder / sensorPulse coders (motor encoders), position sensors and spindle sensors.
A90LFanCooling fans for amplifiers, controls and motors.
A98LBatteryBatteries for CNC memory and absolute encoder backup.

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