A06B-6112-H022 FANUC AC Servo Amplifier Unit A06B6112H022 A06B-6112-H022

FANUC A06B-6112-H022 Alpha i Spindle Amplifier

Overview

The A06B-6112-H022 is best positioned as a FANUC Alpha i spindle amplifier module for CNC spindle-drive applications.

Public industrial listings consistently identify it as an Alpha i spindle module model SPM-22i, while a publicly accessible FANUC maintenance reference places this order code in the αi SP 22 spindle family.

That makes it a spindle-drive product, not a servo-axis amplifier or power supply module.

In practical machine service, this model is used when the original spindle-drive structure must be preserved without redesigning the cabinet around a different amplifier family. Because spindle amplifiers are closely tied to the machine’s spindle motor, cabinet layout, and control environment, exact family matching matters more than broad product-category similarity.

This is why buyers usually search for the precise module designation rather than for a generic “spindle drive.”

Public replacement references for documented variants such as #H550 and #H570 also show this family in the SPM-22i / aiSP-22 class, with published figures including 25.2 kW context and 95 A rated output current.

Those values help give the module a practical technical identity inside the Alpha i spindle range.

Key Specifications

Spindle Module Positioning in Real CNC Service

One of the most useful technical details about A06B-6112-H022 is that it is clearly positioned as a spindle amplifier, not a general industrial drive.

In real CNC service, that distinction matters because spindle modules are selected according to the machine’s original spindle architecture and output class, not just by cabinet appearance or broad electrical similarity. 

A technically accurate listing should reflect that from the start.

The SPM-22i naming is also valuable because it gives the product a precise place inside the Alpha i spindle family.

For maintenance engineers, that is more useful than a broad label like “spindle amplifier,” because it reduces confusion with nearby spindle classes such as 15i, 26i, or larger units in the same family.

FAQ

Q1: What kind of product is A06B-6112-H022?
It is a FANUC Alpha i spindle amplifier module. Public references consistently classify it as an Alpha i spindle unit, and replacement-channel listings commonly identify it as model SPM-22i.

Q2: Why is the SPM-22i designation important?
The SPM-22i designation gives the module a defined place within the Alpha i spindle family. In practical replacement work, that helps buyers confirm that the module belongs to the correct spindle-drive class rather than a different amplifier range.

Q3: Are the 25.2 kW and 95 A figures useful in application matching?
Yes. Those public figures for documented variants such as #H550 help show that this is a mid-range Alpha i spindle-drive family.

For service engineers, that context can be useful when cross-checking the installed spindle hardware against the replacement module.

Q4: Is this mainly a replacement-market product?
Yes. Public references present it through repair, exchange, and CNC spare-parts channels, which is typical for installed spindle-drive hardware used to support existing production equipment.

Q5: What should buyers verify before ordering?
Buyers should confirm the exact part number, the Alpha i spindle family, the αi SP 22 / SPM-22i class, and the spindle-drive arrangement already installed in the machine.

For spindle amplifiers, correct family matching is usually as important as the order code itself.