Fanuc Servo Motor Model Number Uncovered

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Most of us know and understand that you need to use model numbers to find the right Fanuc Servo motor for your machine. When your machine goes down do you know, or wonder, what the model number means? That  model number gets you the perfect Fanuc Servo Motor to get you back up and running.

The model number is an interesting study, and it gives clues on how your motor is constructed. We’re going to tell you exactly what each section means.

Take the Fanuc Alpha Series Servo Motor, for example. These motors start with A06B at the beginning.

Here’s the model number breakdown:

A06B-01 ♦ ♦ – B ■ ♣ ♣

In the second section, the two positions (♦ ♦) indicate the physical length your motor. For the Fanuc Alpha Series Servo Motor, there are many different servo motor lengths; however, there are nine motor lengths we will focus on, which are listed below.

  • 42: Model α 12/2000
  • 43: Model α 12/3000
  • 46: Model α 22/1500
  • 48: Model α 22/3000
  • 51: Model α 30/1200
  • 52: Model α 30/2000
  • 53: Model α 30/3000
  • 57: Model α 40/2000
  • 58: Model α 40/2000 (with fan)

In the third section, the second position (■) refers to your motors shaft brake options. There are four different brake options for this servo motor model: 0, 1, 5, or 6. The different brake options and meanings are listed below.

  • 0: Straight Shaft (Standard)
  • 1: Straight Shaft with Brake (35 Nm)
  • 5: Taper Shaft
  • 6: Taper Shaft with Brake (35 Nm)

The last two positions, together, in the third section (♣ ♣) tell your servo motors feedback options. For this servo motor, there are four different feedback options: 75, 77, 84 or 88.

  • 75: With the Pulse Coder α A64
  • 77: With the Pulse Coder α I64
  • 84: With the Serial Pulse Coder α A
  • 88: With the Serial Pulse Coder α A1000

At the end of the model number, you may see a # symbol followed by a number; this addition to the model number tells if the motor is sealed or unsealed and if the motor has a keyway in the shaft or not. If there is not a # symbol followed by a number after the model number, by default, #0000 or #7000 will be attached to the model number. The different options are listed below.

  • #7000    Unsealed motor without a keyway in the shaft
  • #0000    Unsealed motor without a keyway in the shaft
  • #7008    Unsealed Motor with a keyway in the shaft
  • #0008    Unsealed motor with a keyway in the shaft
  • #7075    Sealed motor without a keyway in the shaft
  • #0075    Sealed motor without a keyway in the shaft
  • #7076    Sealed motor with a keyway in the shaft
  • #0076    Sealed motor with a keyway in the shaft

Now that we know what each section of the model number means, lets go take a look at the Fanuc Servo Motor A06B-0142-B575.

The servo motor has a physical length of 42, which is model α 12/2000 (42), and it has a taper shaft (5). This model also has a feedback option with the pulse coder α A64 (75).

For more servo motor options, see Repair Zone’s complete inventory Fanuc Servo Motors. Having issues with identifying your servo motor? No problem, call a Repair Zone technician for assistance at 877-735-6848.

If you would like to know more about RepairZone’s servo motor repair capabilities, click the button below:

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2 Comments

  1. what type of the servo you guy can do? can your guy do any absolute encoder, end serial encoder? thanks

    • We work with quite a few servos, if you have a certain type in mind it would be easier to tell you if we work with that specific model. We work with most absolute encoders and some serial, it really does depend on the brand. Let me know if you have any further questions or you can visit our website http://www.repairzone.com/?kmas=329.

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