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A06B-0143

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A06B-0143
May 13, 2026

A06B-0143

FANUC AC Servo Motor Model: A06B-0143 Series αi A12/3000 Series, Medium‑Inertia, 2.8kW, 3000rpm 1. Product Overview 1.1 General Description The A06B-0143 series is a high‑speed, medium‑inertia AC servo motor from the FANUC αi A12/3000 platform. Designed for high‑speed machining and dynamic automation, it delivers 2.8kW rated power, 12Nm continuous torque, and a 3000rpm base speed. Common variants include straight/tapered shaft, with/without brake, and absolute/incremental encoders. 1.2 Part Number Definition (A06B‑0143‑B■♣♣) A06B: FANUC servo motor prefix 0143: αi A12 frame, medium inertia, 3000rpm B: Motor type (AC servo) ■ (Shaft/Brake): 0: Straight shaft, no brake 1: Straight shaft, with brake 5: Tapered shaft, no brake 6: Tapered shaft, with brake ♣♣ (Encoder): 75: aA64 absolute encoder (65,536ppr) 77: aI64 incremental encoder (65,536ppr) 84: αA serial absolute encoder 88: αA1000 high‑resolution serial encoder #0003: IP54; #0006: IP65 1.3 Key Applications High‑speed CNC machining centers, lathes, grinders High‑speed automation and gantry systems Rotary axes requiring 3000rpm General high‑speed, medium‑torque applications

Description

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2. Technical Specifications

2.1 Electrical & Performance

  • Rated Output Power: 2.8kW

  • Rated Speed: 3000rpm

  • Rated Voltage: 155VAC (3‑phase)

  • Rated Current: 15A

  • Rated Frequency: 200Hz

  • Continuous Torque: 12Nm

  • Stall Torque: ≈26Nm

  • Rotor Inertia: Medium

  • Encoder: aA64 (abs) / aI64 (inc), 65,536ppr

  • Shaft: Straight (ST) or Tapered (TPR)

  • Brake: Optional 24VDC holding brake

  • Insulation Class: F (155°C)

  • Cooling: Natural cooling (no fan)

  • Protection Grade: IP54 (#0003) / IP65 (#0006)

  • Operating Temperature: 0°C to +55°C

  • Storage Temperature: −20°C to +70°C

  • Relative Humidity: 10%–90%, non‑condensing

  • Vibration Resistance: Up to 5G

  • Weight: ≈24kg

3. Mechanical Dimensions & Mounting

3.1 Shaft & Flange

  • Flange: A12 (110mm × 110mm)

  • Mounting: 4 × M8 bolts, 85mm pitch circle

  • Shaft Options:

    • Straight (ST): φ22mm, keyway

    • Tapered (TPR): 1:10, no keyway

3.2 Cable Connections

  • Power: Flying leads (U, V, W, PE)

  • Encoder: 20‑pin connector

  • Brake: 2‑pin connector (if equipped)

4. Product Features

4.1 High‑Speed Performance

3000rpm base speed for high‑productivity machining.

4.2 Medium‑Inertia Rotor

Balances dynamic response and load stability.

4.3 High‑Resolution Encoder

65,536ppr (aI64/aA64) for precise positioning.

4.4 Optional Holding Brake

24VDC brake for vertical‑axis static holding.

4.5 Shaft Flexibility

Straight or tapered shaft for diverse coupling needs.

4.6 Compact & Sturdy

Aluminum housing, reinforced bearings for industrial durability.

5. Installation Instructions

5.1 Safety Precautions

  • Disconnect power before installation/wiring/maintenance.

  • Properly ground motor and amplifier.

  • Do not exceed rated specs.

  • Brake is for static holding only; not for dynamic stopping.

5.2 Mechanical Installation

  1. Inspect housing, flange, shaft for damage.

  2. Mount with 4 × M8 bolts (20–22Nm torque).

  3. Align coupling/load; avoid impact and excessive radial load.

5.3 Electrical Wiring

  1. Use FANUC‑specified shielded cables.

  2. Connect U/V/W/PE; torque terminals to 1.5–1.8Nm.

  3. Connect encoder cable; verify pinout.

  4. Connect 24VDC brake (if equipped).

  5. Route cables with min. 10× diameter bend radius; separate from high‑voltage lines.

  6. Ground motor frame to system ground.

5.4 Pre‑Operation Check

  • Secure mounting and connections.

  • Correct encoder/power/brake wiring.

  • Initialize amplifier, home axis, test low‑speed no‑load run.

  • Verify brake operation (stop=hold, run=release).

6. Operation Precautions

6.1 Do Not Exceed Ratings

Avoid overvoltage, overspeed, or overtorque; overload causes overheating/demagnetization.

6.2 Avoid Frequent Reversals

Minimize rapid forward/reverse jogging to reduce thermal stress.

6.3 Environmental Limits

Not for explosive/corrosive/dusty environments; 0°C to +55°C.

6.4 Brake Usage

Static holding only; release before operation.

6.5 No Unauthorized Disassembly

Tampering voids warranty.

6.6 Abnormal Conditions

Stop and cut power if noise, vibration, overheating (>80°C), or servo alarms occur.

7. Maintenance & Storage

7.1 Regular Maintenance

  • Clean surface; keep vents clear.

  • Monthly: Check bolts, couplings, terminals.

  • Bearings: Factory‑lubricated; replace if noise/vibration rises.

  • Encoder: Check connections and seals.

  • Brake: Test holding force/release function.

7.2 Storage

  • 5°C–35°C, ≤85% RH, non‑condensing.

  • Store in original packaging; avoid sunlight/moisture/dust.

  • Shelf life: 12 months sealed.

8. Quality & Warranty

8.1 Compliance

Manufactured to FANUC industrial standards.

8.2 Testing

100% factory‑tested for balance, electrical performance, insulation, and brake function.

8.3 Warranty

12 months from delivery (normal use/proper installation). Void if disassembled/modified/misused.

9. Common Ordering Codes

  • A06B‑0143‑B075: Straight shaft, no brake, aA64 absolute encoder

  • A06B‑0143‑B077: Straight shaft, no brake, aI64 incremental encoder

  • A06B‑0143‑B175: Straight shaft, with brake, aA64 absolute encoder

  • A06B‑0143‑B177: Straight shaft, with brake, aI64 incremental encoder

  • A06B‑0143‑B675: Tapered shaft, with brake, aI64 incremental encoder

  • #0003: IP54; #0006: IP65


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