The FANUC A06B-0371-B577#7000 is an Alpha 1/3000 AC servo motor configured with a straight shaft, no holding brake, and an I64 incremental pulse coder. It provides controlled rotary motion and feedback for compatible FANUC CNC machine-axis applications.

• 100% function tested before shipment
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• Testing video provided upon request

Product Details

Brand: FANUC
Part Number: A06B-0371-B577#7000
Base Number: A06B-0371-B577
Alternative Formats: A06B0371B577#7000 / A06B0371B5777000
Product Type: AC Servo Motor
Motor Model: Alpha 1/3000
Motor Output: 0.3 kW / 0.4 hp
Output Speed: 3,000 min⁻¹
Rated Torque at Stall: 1.0 Nm
Shaft Type: Straight Shaft
Shaft Modification: Smooth/non-keyed configuration associated with #7000
Holding Brake: Not Included
Feedback Detector: I64 Incremental Pulse Coder
Modification Suffix: #7000
Product Family: A06B-0371
Availability: Contact us for current stock and lead time

Servo and Feedback Function

The A06B-0371-B577#7000 receives commands from a compatible FANUC servo amplifier and produces accurately controlled movement for a machine axis. Its I64 incremental pulse coder supplies position and speed feedback to the servo-control system.

Because the I64 is an incremental feedback device, this motor should not be substituted with an A64 absolute-pulse-coder version solely because the motor frame and output rating appear similar. The CNC feedback configuration, servo parameters and machine reference-return requirements must be checked.

Model Configuration Differences

FANUC designation information distinguishes these related Alpha 1/3000 motors:

• A06B-0371-B077: Taper shaft, no brake, I64 pulse coder
• A06B-0371-B575: Straight shaft, no brake, A64 absolute pulse coder
• A06B-0371-B577: Straight shaft, no brake, I64 incremental pulse coder
• A06B-0371-B677: Straight shaft with brake, I64 pulse coder

The A06B-0371-B577#7000 must therefore not be advertised as an A64 absolute-encoder motor or a braked servo motor.

Full-Suffix Verification

The #7000 suffix is part of the complete ordering number and should be retained in the product title, quotation and compatibility check. Other B577 variants may carry suffixes such as #0075, #7023 or #C076 with different sealing, approval, shaft-keyway or production modifications.

Before purchasing, compare the full number on the original motor nameplate. A similar A06B-0371-B577 motor with another suffix is not automatically an exact replacement for the #7000 configuration.

Compatibility Check

Please verify:

• Complete part number A06B-0371-B577#7000
• Straight-shaft and non-keyed coupling requirements
• I64 incremental pulse-coder compatibility
• No-brake motor configuration
• Motor and feedback connector arrangement
• Mounting flange and shaft dimensions
• FANUC servo-amplifier model
• CNC parameters and reference-return procedure
• Original machine-tool motor specification

Replacement and Support

This motor may be considered when diagnosing I64 pulse-coder alarms, unstable positioning, loss of feedback, abnormal bearing noise, overheating, winding faults, damaged connectors or shaft damage. The encoder cable, power cable, servo amplifier, coupling and mechanical load should also be inspected before replacement.

REACO CNC supplies tested FANUC servo motors with warranty support, testing-video service and worldwide express delivery. Please send a clear photo of the original nameplate and shaft before ordering so the complete configuration can be confirmed.