A06B-0086-B503
May 13, 2026

A06B-0086-B503

FANUC AC Servo Motor Model: A06B-0086-B503 Full English Specification Manual (Text Only, No Images) 1. General Information Model Number: A06B-0086-B503 Manufacturer: FANUC Corporation Motor Type: βiS 22/2000 HV Medium-Inertia High-Voltage Permanent Magnet AC Servo Motor Configuration: With electromagnetic holding brake Shaft Style: Straight shaft with keyway Built-in Encoder: βiA 128K incremental high-resolution encoder (A860-2020-T321) Protection Grade: IP65 (dustproof & splash-proof) Cooling: Natural convection, fanless fully enclosed structure Mounting: Standard flange installation Net Weight: Approx. 20.5 kg Brake Feature: Power-off automatic holding brake, suitable for vertical axis load locking

Description

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2. Electrical Specifications

  • Rated Input Voltage: 380–400 VAC, 3-phase, 50/60 Hz

  • Rated Output Power: 2.2 kW

  • Rated Torque: 10.5 N·m

  • Rated Speed: 2000 RPM

  • Max Continuous Speed: 2500 RPM

  • Rated Phase Current: 3.8 A

  • Insulation Class: Class F

  • Winding: 3-phase HV brushless permanent magnet winding

  • Rated Frequency: 200 Hz

  • Brake Voltage: DC 24 V

3. Mechanical Specifications

  • Rotor: Medium inertia, balanced dynamic response & operation stability

  • Bearing: Lifetime sealed pre-lubricated bearings, no periodic greasing

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

  • Shaft Runout: Ultra-low precision tolerance, high transmission accuracy

  • Rotation Direction: Counterclockwise (view from shaft end)

  • Structure: Fully enclosed industrial heavy-duty design

  • Brake Holding Torque: Matched motor rated torque, reliable vertical load static locking

4. Ambient Operating Conditions

  • Working Temperature: 0 ℃ ~ +40 ℃

  • Storage Temperature: -20 ℃ ~ +60 ℃

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

  • Installation Altitude: ≤ 1000 m above sea level

  • Vibration Resistance: 0.5g, 10–100 Hz

  • Environment: Indoor CNC workshop; not for explosive, flammable, strong corrosive atmosphere

5. Core Features

  1. 400V High-voltage design, low working current, low cable voltage drop, long-distance wiring adaptable

  2. Built-in power-off brake, safely lock vertical axis load after power failure, prevent falling accidents

  3. 128K high-precision encoder, ultra-accurate position & speed closed-loop control

  4. IP65 protection, resistant to dust, oil mist and cutting fluid splash

  5. Keyway solid shaft, stable torque transmission, easy coupling assembly

  6. Brushless structure, low noise, no carbon wear, long service life, maintenance-free routine operation

  7. Fanless cooling, fewer fault points, higher overall system reliability

6. Typical Applications

  • Vertical feed axes of 400V FANUC CNC lathes, milling machines, machining centers

  • Vertical lifting & positioning mechanisms of high-voltage automation production lines

  • Packaging, printing, textile special servo vertical motion equipment

  • Medium-load precision motion systems requiring power-off load protection

  • Long-wiring CNC servo feeding applications

7. Installation Requirements

  1. Install on rigid flat base, avoid resonance and mechanical deformation

  2. Strict coaxial alignment between motor shaft and load shaft, reduce vibration and bearing wear

  3. Use dedicated shielded servo power cable, brake cable and encoder signal cable; separate strong & weak electricity wiring to avoid EMI interference

  4. Keep enough heat dissipation space, do not block motor shell

  5. Handle gently, avoid impact and drop to protect internal encoder and brake components

8. Daily Maintenance

  1. Regular check abnormal noise, vibration and overheating status

  2. Keep motor surface clean from iron dust, chips and oil pollution

  3. Sealed bearings lifelong lubrication, no regular oil filling required

  4. Inspect encoder connector, brake wire harness integrity and fastening status periodically

  5. Prohibit long-time overload and frequent frequent forward-reverse start-stop beyond rated parameters

9. Safety Regulations

  1. Cut off all 400V high-voltage power supply before maintenance; wait 15 minutes for servo drive capacitor discharge to avoid electric shock

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

  3. Do not disassemble motor shell, brake and encoder privately; unauthorized disassembly invalidates warranty and damages precision parts

  4. Avoid use in conductive dust, heavy condensation and corrosive environment without additional protection

  5. Vertical axis must confirm brake reliability before power-on debugging to prevent load falling

10. Common Troubleshooting

  • Motor cannot start: Check 3-phase 400V power supply, wiring connection, servo alarm code and axis enable signal

  • Abnormal noise & vibration: Check mounting rigidity, coupling concentricity, bearing damage and load jamming

  • Motor overheating: Caused by long overload, high ambient temperature or poor heat dissipation

  • Position deviation: Encoder cable damage, loose connector, parameter mismatch or mechanical backlash

  • Brake failure & load slipping: DC24V brake power abnormality, brake wear or brake parameter mismatch


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