A06B-0075-B203
May 13, 2026

A06B-0075-B203

A06B-0075-B203 FANUC AC Servo Motor Detailed Specification Manual (English Version) 1. General Information Model Number: A06B-0075-B203 Manufacturer: FANUC Product Type: AC Servo Motor Series: βiS 8/2000 Low Inertia Shaft Type: Straight shaft with keyway Holding Brake: Without brake Encoder: Built-in βiA 128K high-resolution incremental encoder Protection Class: IP65 Net Weight: Approximately 7.4 kg

Description

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2. Electrical Specifications

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

  • Rated Output Power: 1.2 kW

  • Rated Torque: 7.0 N·m

  • Rated Speed: 2000 RPM

  • Maximum Speed: 2000 RPM

  • Rated Current: 4.9 A

  • Insulation Class: F

  • Winding Type: Three-phase brushless winding

3. Mechanical Specifications

  • Mounting Method: Flange mounting

  • Cooling Method: Natural air cooling

  • Bearing Type: Sealed bearing with lifetime pre-lubrication

  • Shaft Structure: Standard straight shaft with keyway

  • Noise Level: ≤ 68 dB(A)

  • Structure Type: Fully enclosed fanless design

4. Environmental Conditions

  • Operating 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 (10 Hz – 100 Hz)

  • Application Environment: Not applicable for explosive, flammable or strong corrosive atmosphere without protective measures

5. Key Features

  1. Low inertia rotor design, fast dynamic response and excellent acceleration and deceleration performance.

  2. Equipped with 128K high-resolution incremental encoder to achieve high-precision position and speed control.

  3. IP65 protection grade, dustproof and splashproof, suitable for ordinary industrial workshop environment.

  4. Straight shaft with keyway design, convenient for coupling installation and reliable torque transmission.

  5. Brushless motor structure, low running noise, no carbon brush loss, long service life and maintenance-free in normal operation.

  6. Natural air cooling design without external fan, simple structure and high operation reliability.

  7. Compact structure with high power density, easy installation and mechanical matching.

6. Application Fields

  • CNC lathe, milling machine and machining center feed axes

  • Industrial automated production lines and positioning equipment

  • High-precision motion control systems

  • Industrial robot transmission joints

  • Packaging machinery, printing machinery and automated conveying equipment

  • Horizontal axis and non-drop load servo control occasions

7. Installation Guidelines

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

  2. Keep precise alignment between motor shaft and load shaft to reduce vibration, noise and premature bearing wear.

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

  4. Reserve enough space around the motor for heat dissipation; do not block the heat dissipation area of the motor housing.

  5. Avoid strong impact, dropping and extrusion on the motor body and encoder rear cover during handling and installation.

8. Maintenance Instructions

  1. Regularly check the motor operating status including abnormal noise, vibration and temperature rise.

  2. Keep the motor surface clean, remove dust, metal chips and oil stains periodically.

  3. The built-in sealed bearings adopt lifetime lubrication, no regular refueling is required under normal working conditions.

  4. Inspect encoder cable integrity, connector tightness and aging status regularly.

  5. Avoid long-term overload operation and frequent start-stop beyond the allowable load range.

9. Safety Precautions

  1. Disconnect all power supply before installation, wiring and maintenance. Wait at least 15 minutes for internal capacitors to discharge to prevent electric shock.

  2. Do not touch the rotating shaft and moving parts during motor operation.

  3. This model is not equipped with a holding brake; it is prohibited to use it for vertical axes or suspended loads with falling risks without additional mechanical locking devices.

  4. Do not disassemble the motor and encoder privately; unauthorized disassembly will void the warranty and damage assembly precision.

  5. Do not use the motor in environments with conductive dust, heavy condensation and chemical corrosion without special protection.

10. Troubleshooting

  • Motor fails to start: Check three-phase power supply, wiring tightness, servo amplifier alarm codes and enable signals.

  • Abnormal noise and vibration: Check mounting rigidity, shaft alignment, bearing aging and mechanical load jamming.

  • Motor overheating: Inspect overload operation, excessive ambient temperature, poor ventilation and winding insulation aging.

  • Positioning deviation: Check encoder cable damage, loose connectors, mismatched servo parameters and mechanical transmission backlash.

  • Unstable speed: Check power supply voltage fluctuation, sudden load change and encoder signal interference.


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