FANUC A06B-0114-B855#0048 AC Servo Motor

Description

Key Technical Specifications

• Manufacturer: FANUC
• Part Number: A06B-0114-B855#0048
• Motor Type: AC Servo Motor
• Motor Model: BiSR0.4/5000
• Rated Output Power: 0.13 kW
• Rated Speed: 4,000 RPM (verify application-specific configuration)
• Encoder Type: B64IA feedback configuration
• Shaft Type: Straight shaft with keyway
• Brake: 90 V electromagnetic brake
• Input Voltage: 200–240 V AC class
• Rated Current: Approximately 2.7 A
• Protection Rating: IP65
• Pole Number: 8 poles
• Shaft Diameter: 9 mm
• Flange Diameter: 50 mm
• Weight: Approximately 0.9 kg–1 kg
• Application: FANUC CNC machine tools and industrial motion systems

Technical descriptions for this model identify it as a FANUC AC servo motor with BiSR0.4/5000 configuration, straight shaft, keyway, brake, and B64IA encoder.

Product Introduction

FANUC A06B-0114-B855#0048 is an AC servo motor designed for CNC machine tool axis control and industrial motion applications. This BiSR0.4/5000 servo motor configuration includes a straight shaft, keyway, 90 V brake, and B64IA encoder feedback interface.

This motor is commonly used as a replacement component for FANUC-controlled machining equipment where maintaining original axis performance and mechanical compatibility is required. Before installation, confirm the servo amplifier model, encoder feedback type, mechanical mounting dimensions, and motor parameters stored in the CNC control.

A06B-0114-B855#0048

A06B-0114-B855#0048

Installation & Configuration Guide

Stage 1: Pre-Installation Preparation (Approx. 15 minutes)

⚠️ Safety First:

• Notify production personnel before stopping the machine.
• Move the machine axis to a safe maintenance position.
• Apply lockout/tagout procedures.
• Disconnect servo power supply.
• Wait for DC bus capacitors to discharge before handling motor wiring.

Tools Required:

• ESD wrist strap
• Metric socket set
• Torque wrench
• Multimeter
• Wire labels
• Smartphone/camera for reference photos

Data Backup:

• Record CNC parameter settings.
• Save servo tuning parameters if available.
• Photograph motor wiring and connector orientation.
• Record the existing motor nameplate information.
• Verify the servo amplifier model before removal.

Stage 2: Removing the Existing Servo Motor (Approx. 30 minutes)

Steps:

1. Power down the CNC system completely.
2. Label motor power cables and encoder feedback cables.
3. Disconnect brake wiring if equipped.
4. Remove mechanical coupling or belt connection.
5. Support the motor weight before removing mounting bolts.
6. Remove the old servo motor carefully.
7. Inspect the coupling, shaft key, and mounting surface.

⚠️ Note:
Do not rotate the motor shaft aggressively after disconnecting feedback wiring. Encoder alignment and mechanical reference conditions must be preserved.

Stage 3: Installing the New FANUC A06B-0114-B855#0048 (Approx. 30 minutes)

Steps:

1. Verify the replacement label matches A06B-0114-B855#0048.
2. Inspect shaft, keyway, flange, and connector condition.
3. Install the motor into the original mounting position.
4. Align the coupling correctly.
5. Tighten mounting bolts using manufacturer torque specifications.
6. Connect power, encoder, and brake wiring.
7. Confirm cable routing avoids mechanical interference.

Self-Checklist:

• Correct FANUC part number confirmed
• Shaft alignment completed
• Coupling secured
• Encoder connector locked
• Brake wiring verified

Stage 4: Power-On & Testing (Approx. 30 minutes)

Pre-Power Check:

• Verify motor insulation resistance if required.
• Confirm correct phase wiring.
• Check encoder connector seating.
• Confirm servo amplifier compatibility.

Power-On Steps:

1. Power up the CNC control system.
2. Check for servo alarms.
3. Confirm encoder feedback detection.
4. Perform servo axis jog test at low speed.
5. Verify rotation direction.
6. Execute reference return operation.
7. Check axis positioning accuracy.

⚠️ Troubleshooting Note:

• Servo alarm after replacement may indicate encoder mismatch, parameter mismatch, incorrect wiring, or amplifier incompatibility.
• If the axis moves in the wrong direction, stop immediately and verify motor phase and CNC parameters.
• Always compare the replacement motor data with the original FANUC configuration.

Frequently Asked Questions (FAQ)

Q1: Is FANUC A06B-0114-B855#0048 a direct replacement motor?

Yes, when the existing machine uses the same FANUC part number and compatible servo amplifier configuration. Always verify motor series, encoder type, brake voltage, and mechanical dimensions before installation.

Q2: What type of motor is FANUC A06B-0114-B855#0048?

It is a FANUC AC servo motor from the A06B servo product family. The listed configuration is BiSR0.4/5000 with brake, straight shaft, keyway, and B64IA encoder feedback.

Q3: Can this servo motor be installed without changing CNC parameters?

Not always. FANUC systems store servo-related parameters that may need verification after motor replacement. Confirm motor ID, amplifier settings, and axis tuning values before returning the machine to production.

Q4: Can FANUC #0048 be hot-swapped?

No. Servo motors are not normally replaced under power. Disconnect servo power and follow proper electrical safety procedures before removal.

Q5: Why is this FANUC servo motor available below OEM pricing?

Legacy CNC components are frequently sourced from surplus inventory, machine rebuild projects, and tested replacement stock. The condition should always be clearly identified as New Original, New Surplus, or Refurbished Tested.

Q6: What should I confirm before ordering this motor?

Provide:

• Existing FANUC motor part number
• CNC control model
• Servo amplifier model
• Axis application
• Encoder type
• Brake requirement

These details prevent mechanical and electrical compatibility issues.

Q7: What testing should be performed on a refurbished FANUC servo motor?

A proper inspection should include:

• Visual condition inspection
• Insulation resistance testing
• Encoder feedback verification
• Brake operation testing
• Rotation test
• Load simulation where applicable

A tested replacement should include documented inspection results before installation.