The FANUC A06B-0377-B588#0008 is an Alpha M2.5/3000 AC servo motor configured with a straight keyed shaft, no holding brake, and an A1000 absolute pulse coder. It provides controlled rotary movement and high-resolution position feedback for compatible FANUC CNC machine-axis systems.

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Product Details

Brand: FANUC
Part Number: A06B-0377-B588#0008
Base Number: A06B-0377-B588
Alternative Formats: A06B0377B588#0008 / A06B0377B5880008
Product Type: AC Servo Motor
Motor Model: Alpha M2.5/3000
Motor Output: 0.5 kW
Output Speed: 3,000 min⁻¹
Rated Torque at Stall: 2.5 Nm
Shaft Type: Straight Shaft
Shaft Modification: Keyed
Holding Brake: Not Included
Feedback Detector: A1000 Absolute Pulse Coder
Pulse-Coder Resolution: 1,000,000 divisions per revolution
Modification Suffix: #0008
Product Family: A06B-0377
Availability: Contact us for current stock and lead time

Motor and Feedback Function

The A06B-0377-B588#0008 converts commands from a compatible FANUC servo amplifier into accurately regulated machine-axis movement. Its A1000 absolute pulse coder provides high-resolution feedback for position and speed control.

Absolute-position retention requires the correct backup-power arrangement in the CNC or servo amplifier. Battery condition, feedback cables and the approved motor-removal procedure should be checked before disconnecting the original unit.

Exact Model Configuration

The complete part number identifies the following configuration:

• A06B-0377: Alpha M2.5/3000 motor family
• B588: Straight shaft, no brake and A1000 absolute feedback
• #0008: Keyed-shaft modification

The #0008 suffix is part of the ordering number and should be retained in the product title, quotation and compatibility check.

M2.5/3000 Clarification

The A06B-0377-B588#0008 is an Alpha M2.5/3000, not an Alpha 2/3000 motor. FANUC documentation specifies a rated torque at stall of 2.5 Nm for the M2.5/3000 family.

It should not be confused with the A06B-0373 Alpha 2/3000 series, even where the speed, shaft appearance or feedback detector looks similar.

Related Configuration Differences

Related A06B-0377 motors include:

• A06B-0377-B088: Taper shaft, no brake and A1000 pulse coder
• A06B-0377-B588: Straight shaft, no brake and A1000 pulse coder
• A06B-0377-B589: Straight shaft with A1000 plus super capacitor
• A06B-0377-B688: Straight shaft with brake and A1000 pulse coder

Differences in the shaft, brake, feedback detector or super-capacitor configuration can prevent direct interchangeability.

Compatibility Check

Before ordering, please verify:

• Complete number A06B-0377-B588#0008
• Alpha M2.5/3000 motor requirement
• Straight keyed-shaft dimensions
• A1000 absolute pulse-coder compatibility
• No-brake configuration
• Power and feedback connectors
• Mounting flange and machine coupling
• FANUC servo-amplifier model
• CNC parameters and absolute-position battery status

Sales and Support

This motor may be considered when diagnosing A1000 feedback alarms, absolute-position errors, unstable axis movement, abnormal bearing noise, overheating, winding faults, connector damage or shaft wear. The cables, servo amplifier, coupling and mechanical load should also be checked before replacement.

REACO CNC supplies tested FANUC servo motors with warranty support, testing-video service and worldwide express delivery. Please send clear photos of the complete nameplate, shaft and connectors when requesting a quotation.