fanuc servo motor
FANUC AC servo motors
AC servo motors for the feed axes of FANUC-controlled machines. A motor is rarely ordered alone — its feedback device travels with it — so this page keeps the motor numbers and the encoder numbers in sight of each other.
AC servo motors
The seller's motor family is published as FANUC AC servo motors, with one motor named in the catalogue by number: the A06B-0235-B202. The rest of the family is stocked at family level and answered on inquiry, which is normal for motors: the exact motor on a machine depends on the axis and the machine builder's specification, and the label on the fitted motor is the only reliable ordering key. Quote the full motor number, including any suffix marks after the B-code, and the desk answers from the motor shelf.
Servo motors fail in two distinct ways — the motor itself, and the feedback device on its rear — and the second is far more common than the first. That is why the encoders family sits one click away and why its numbers are summarised on this page as well.
Motor and feedback numbers
The named motor, and the feedback numbers most often ordered with a motor.
| Part number | Catalogue description | Page |
|---|---|---|
| A06B-0235-B202 | FANUC motor, named catalogue item | Part page |
| A860-0309-T302 | Encoder | Part page |
| A860-2005-T301 | Pulse coder / servo motor rotary encoder | Part page |
| A860-2000-T301 | Servo encoder | Part page |
| A860-0365-V501 | Servo motor encoder | Part page |
Motor or encoder: splitting the fault
An axis that alarms on feedback, drifts, or loses its reference point is pointing at the encoder end of the motor more often than at the windings. The blog guide on pulse coders and encoders explains how the A860 families divide and what to match. Buyers unsure which end has failed can send both numbers — the motor's and the encoder's — and the desk answers for the pair, including the option of testing the returned unit on the bench.
Condition and testing for motors
Motors on the shelf are original FANUC units in the condition listed for the line, and the condition ladder is explained on the used FANUC parts page. A motor is a heavy, shaft-and-bearing part: ask for the test before dispatch and, where it matters, for the test video the service offers, so the unit's running state is on record before it ships.
Related pages
Send an inquiry
Send the part numbers you need, or the number of a unit you want assessed, with the machine each belongs to. One desk answers for the shelves and the bench.
Open the inquiry form