A06B-6122-H030#H550 Fanuc Spindle amplifier SPM-30HVi (400V Series)

Buy online your A06B-6122-H030#H550 Fanuc Spindle amplifier SPM-30HVi reference A06B-6122-H030-H550 from our US e-store Cnc-shopping USA, specialist in CNC machine-tools spare parts.

This FANUC spindle amplifier from the SPM-30HVi series is part of the αi drive platform. It receives spindle speed and torque commands from the CNC, regulates current to the FANUC αi spindle motor, and keeps machining stable at low and high RPM. Commonly used as a replacement unit or spare part on machining centers, turning centers and grinders built on FANUC Series i controls, it supports spindle orientation under CNC command and integrates cleanly in standard FANUC cabinets.

Within the αi architecture this module is supplied by a matching FANUC αi power supply on a shared DC bus. The amplifier closes the current and speed loops for the spindle, managing acceleration, deceleration and orientation signals so the CNC can position the spindle for tool change, threading or probing. When paired correctly with the designated αi spindle motor, response is consistent across the speed range with stable torque regulation.

The #H550 suffix identifies the defined software and option build used by the machine builder. Field replacements should match the original nameplate including the option code to ensure a drop-in swap without wiring changes or unexpected parameter conflicts. Mounting follows the usual FANUC layout alongside αi servo amplifiers and the power supply, with connectors and interface points arranged for quick cabinet service by maintenance teams.

This model is Japan made and widely sourced by MRO buyers as a CNC replacement component for planned spares and urgent repairs. Technicians rely on it to clear spindle alarms related to power stages or unstable regulation, and many shops keep a tested unit on the shelf to shorten downtime during unplanned stops.

Reference: A06B-6122-H030-H550

Manufacturer: FANUC

Product type: FANUC Spindle drive

Main function: Controls and powers a FANUC αi spindle motor with closed-loop speed and torque regulation under CNC command, including spindle orientation support.

Applications: Field replacement and retrofit on FANUC-driven machining centers, lathes and grinders using Series i controls in maintenance and repair environments.

Key technical data: Model SPM-30HVi code A06B-6122-H030 with option #H550, Japan made. Operates on the αi drive platform with a shared DC link from a compatible FANUC αi power supply such as A06B-6120-Hxxx. Designed for cabinet mounting next to αi servo amplifiers. Commonly sourced as a spare part or replacement unit with fast dispatch depending on availability. Many stocked items ship directly from our Florida facility.

In real shop conditions this module is fitted to recover machines showing spindle alarms, erratic speed control or power transistor faults. Matching the option code and capacity to the original build helps avoid extra commissioning steps and keeps the machine return-to-cut short. Keeping a refurbished or tested spare in the toolroom or maintenance cage supports preventive programs and protects uptime on older FANUC cabinets.

Each drive is verified by skilled engineers on CNC simulators with spindle motors to confirm current loop stability, speed response and CNC interface behavior before dispatch. Units are packed in antistatic protection with foam bracing and covered by our standard warranty. Depending on availability, products are commonly dispatched from our Florida warehouse.

For legacy equipment this module can serve as an emergency spare to reduce unexpected downtime. Cnc-shopping USA supports sourcing of obsolete parts and offers repair service, exchange service and, when suitable, refurbished units to keep older FANUC installations productive.

Frequently asked questions about A06B-6122-H030-H550:

Why must the #H550 option match the original nameplate?
The suffix defines the software and option build expected by the machine builder. Matching the same code helps ensure a direct swap with the existing wiring and parameter set managed by the CNC.

Which power supply pairs with this SPM-30HVi?
Use a compatible FANUC αi power supply from the A06B-6120-Hxxx family sized for the cabinet and spindle load. Confirm DC bus capacity and code alignment against the machine’s drive list.

Are spindle parameters stored in the amplifier?
Spindle-related settings reside in the CNC. Back up parameters before removal, then verify orientation, accel and decel limits after installation to confirm proper behavior with the motor.

Where is this code commonly used?
It is frequently installed in vertical machining centers, turning centers and grinding machines equipped with FANUC Series i controls built on the αi platform. Always validate the code against the machine documentation.

What checks help before returning to production?
Confirm cabinet airflow and fans, grounding, tight connectors and an alarm-free power up. Run a controlled speed sweep without load, then validate spindle orientation per the machine manual.