A06B-0078-B203
May 13, 2026

A06B-0078-B203

. General Information Model Number: A06B-0078-B203 Manufacturer: FANUC Corporation Product Type: AC Servo Motor Series: βiS 30/2000 Medium-High Inertia Shaft Type: Straight shaft with keyway Holding Brake: Without brake Built-in Encoder: βiA 128K high-resolution incremental encoder Protection Class: IP65 Cooling Method: Natural air cooling, fanless design Mounting Type: Flange mounting Net Weight: Approximately 18 kg

Description

1

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2. Electrical Specifications

  • Rated Input Voltage: 200–240 VAC, 3-phase, 50/60 Hz

  • Rated Output Power: 3.0 kW

  • Rated Torque: 28.6 N·m

  • Rated Speed: 2000 RPM

  • Maximum Speed: 2500 RPM

  • Rated Current: 11.5 A

  • Rated Frequency: 133 Hz

  • Insulation Class: F

  • Winding Type: Three-phase permanent magnet brushless

3. Mechanical Specifications

  • Rotor Characteristic: Medium-high inertia rotor

  • Bearing Structure: Sealed bearing with lifetime pre-lubrication

  • Noise Level: ≤ 75 dB(A) at rated operation

  • Shaft Precision: Low runout tolerance

  • Rotation Direction: Standard counterclockwise viewed from shaft end

  • Mechanical Structure: Fully enclosed fanless construction

4. Environmental Conditions

  • Operating Ambient Temperature: 0°C to +40°C

  • Storage Temperature: -20°C to +60°C

  • Relative Humidity: 40% ~ 80% RH, non-condensing

  • Installation Altitude: ≤ 1000 meters above sea level

  • Vibration Resistance: 0.5g within 10 Hz – 100 Hz

  • Application Environment: Indoor industrial use; not suitable for explosive, flammable or strong corrosive atmosphere without protective measures

5. Key Features

  1. Medium-high inertia rotor design delivers high rigidity and stable performance for heavy-load and high-precision applications.

  2. Built-in βiA 128K high-resolution incremental encoder ensures precise speed and position feedback for closed-loop control.

  3. IP65 protection grade provides excellent dust and splash resistance, suitable for harsh workshop environments.

  4. Straight shaft with keyway enables easy installation and reliable torque transmission.

  5. Brushless motor design offers low noise, long service life, and maintenance-free operation under normal conditions.

  6. Natural air cooling with fanless design reduces failure rates and enhances operational reliability.

6. Application Scope

  • CNC lathes, milling machines, and machining centers (heavy-load feed axes)

  • Industrial robots (heavy-duty joint drives)

  • Heavy-duty positioning mechanisms in industrial automation lines

  • Packaging, printing, and textile machinery transmission systems

  • General industrial equipment requiring high torque at low-to-medium speeds

7. Installation Guidelines

  1. Mount the motor on a rigid, flat base to avoid resonance and mechanical stress.

  2. Ensure precise alignment between motor shaft and load shaft to minimize vibration and bearing wear.

  3. Use dedicated shielded power and encoder cables; separate power and signal wiring to reduce electromagnetic interference.

  4. Reserve sufficient space around the motor for heat dissipation; do not block cooling areas.

  5. Avoid strong impact or dropping during handling and installation.

8. Maintenance Instructions

  1. Regularly inspect for abnormal noise, vibration, or overheating during operation.

  2. Keep the motor surface clean of dust, metal chips, and oil contamination.

  3. Sealed bearings are lifetime-lubricated; no regular refueling required.

  4. Periodically check encoder cable integrity and connector tightness.

  5. Avoid prolonged overload or frequent start-stop cycles beyond rated limits.

9. Safety Precautions

  1. Disconnect all power before installation, wiring, or maintenance. Wait 15 minutes for capacitor discharge to prevent electric shock.

  2. Do not touch rotating shafts or moving parts during operation.

  3. Do not disassemble the motor or encoder; unauthorized disassembly voids warranty.

  4. Avoid use in conductive dust, heavy condensation, or corrosive environments without protection.

10. Troubleshooting

  • Motor fails to start: Check 3-phase power, wiring, servo amplifier alarms, and enable signals.

  • Abnormal noise/vibration: Verify mounting rigidity, shaft alignment, bearing condition, and load jamming.

  • Overheating: Check for overload, high ambient temperature, poor ventilation, or brake drag (if applicable).

  • Positioning deviation: Inspect encoder cables, connectors, servo parameters, and mechanical backlash.

  • Unstable speed: Check voltage fluctuations, load changes, or encoder signal interference.


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