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A06B-0142-B675

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A06B-0142-B675
May 13, 2026

A06B-0142-B675

FANUC AC Servo Motor Model: A06B-0142-B675 αi A12/2000 Series, Medium‑Inertia, 2.1kW, Tapered Shaft with Brake, Incremental Encoder 1. Product Overview 1.1 General Description The A06B-0142-B675 is a high‑performance, medium‑inertia AC servo motor from the FANUC αi A12/2000 series. It is designed for heavy‑duty industrial motion control applications requiring high torque, precise positioning, and integrated holding brake. This model features a tapered shaft, integrated holding brake, aI64 incremental encoder, and forced air cooling, suitable for machine tools, vertical axes, and automation systems demanding high reliability. 1.2 Part Number Definition A06B：FANUC servo motor series prefix 0142：αi A12 frame size, medium inertia, 2000 rpm base motor B675：Tapered shaft (TPR), holding brake, aI64 incremental encoder, flying leads #0003/#0006：Standard specifications (IP54/IP65) 1.3 Key Applications CNC machining centers, heavy‑duty lathes, grinding machines Vertical/Z‑axis applications requiring brake holding Industrial robots, gantry systems, heavy automation lines High‑torque, medium‑speed applications (2000 rpm) Metalworking, packaging, textile machinery General automation and material handling

Description

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2. Technical Specifications

2.1 Electrical & Performance

  • Rated Output Power：2.1 kW

  • Rated Speed：2000 rpm

  • Rated Voltage：186 VAC (3‑phase)

  • Rated Current：7.4 A

  • Rated Frequency：133 Hz

  • Continuous Torque：13.4 Nm

  • Stall Torque：Approx. 30 Nm

  • Stall Current：Approx. 22 A

  • Rotor Inertia：Medium

  • Encoder：aI64 incremental encoder (65,536 ppr)

  • Shaft：Tapered shaft (TPR)

  • Brake：Integrated DC holding brake

  • Insulation Class：F (155°C)

  • Cooling：Forced air cooling

  • Protection Grade：IP54 standard; IP65 optional

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

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

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

  • Vibration Resistance：Up to 5G

  • Weight：Approx. 24.94 kg

3. Mechanical Dimensions & Mounting

3.1 Shaft & Flange

  • Flange：Standard A12 flange (110 mm × 110 mm)

  • Shaft：Tapered shaft (TPR), no keyway

  • Mounting：Flange‑mounted, 4 × M8 bolts on 85 mm pitch circle

3.2 Cable Connections

  • Power：Flying leads (U, V, W, PE)

  • Encoder：20‑pin connector (aI64 encoder)

  • Brake：2‑pin connector (DC brake)

  • Cooling：Integrated fan connector

4. Product Features

4.1 High‑Torque Density

13.4 Nm continuous torque, 30 Nm peak torque, suitable for heavy loads and high‑force applications.

4.2 Incremental aI64 Encoder

65,536 ppr provides precise position/speed feedback for closed‑loop control; compatible with FANUC αi‑B series amplifiers.

4.3 Medium‑Inertia Rotor

Balances dynamic response and load stability; suitable for variable inertia or frequent speed changes.

4.4 Integrated Holding Brake

DC brake holds vertical axes at rest, prevents free fall when power is off; released by 24 VDC.

4.5 Tapered Shaft Design

Tapered shaft (TPR) enables secure, backlash‑free connection to loads; ideal for high‑precision applications.

4.6 Forced Air Cooling

Integrated fan improves heat dissipation, allowing higher continuous duty cycles and reduced thermal stress.

4.7 Rigid Construction

Cast aluminum housing, reinforced bearings, sealed design ensures long life under heavy load and high vibration.

5. Installation Instructions

5.1 Safety Precautions

  • Disconnect all power before installation, wiring or maintenance.

  • Ensure motor and amplifier are properly grounded to prevent electric shock.

  • Never operate motor beyond rated specifications.

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

5.2 Mechanical Installation

  1. Inspection：Check housing, flange, shaft for damage, deformation or corrosion.

  2. Mounting：Align flange with machine surface. Tighten 4 × M8 bolts evenly to 20–22 Nm for flatness and concentricity.

  3. Shaft Connection：Use tapered hub or coupling for TPR shaft. Ensure full contact and proper torque to avoid slippage.

  4. Shaft Protection：Avoid heavy impact, excessive radial load or axial pressure.

5.3 Electrical Wiring

  1. Cable Selection：Use FANUC‑specified power/encoder/brake cables with adequate current rating and shielding.

  2. Power Wiring：Connect flying leads U, V, W, PE per phase sequence; torque terminals to 1.5–1.8 Nm.

  3. Encoder Wiring：Connect encoder cable to 20‑pin connector; verify pin assignment per FANUC diagram.

  4. Brake Wiring：Connect 24 VDC to brake terminals; brake engages when power is off, releases when energized.

  5. Fan Wiring：Connect cooling fan to specified power supply for forced air operation.

  6. Cable Routing：Avoid sharp bends (min. 10 × cable diameter), heavy compression or crossing with high‑voltage cables.

  7. Grounding：Connect motor frame PE terminal to system ground bus.

5.4 Pre‑Operation Check

  • Confirm all mounting bolts and cable connections are secure.

  • Verify correct encoder, power, brake and fan wiring.

  • Perform servo amplifier initialization, homing and no‑load test run at low speed to confirm smooth operation.

  • Check brake operation: motor stop → brake hold; motor run → brake release.

  • Verify cooling fan operates during motor run.

6. Operation Precautions

6.1 Do Not Exceed Ratings

Avoid operation above rated voltage, speed or torque. Continuous overload causes overheating, demagnetization or permanent damage.

6.2 Avoid Frequent Reversals

Minimize prolonged rapid forward/reverse jogging to reduce overcurrent and thermal stress.

6.3 Environmental Limits

Do not use in explosive, corrosive or conductive dust environments. Ambient temperature 0°C to +55°C.

6.4 Brake Usage

Brake is for static holding only. Do not use for dynamic braking or emergency stop. Release brake before motor operation.

6.5 Cooling Fan Maintenance

Ensure cooling fan is operational during high‑load or continuous duty; clean fan and vents periodically.

6.6 No Unauthorized Disassembly

Do not open motor housing or tamper with encoder/rotor. Warranty void if disassembled or modified.

6.7 Abnormal Conditions

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

7. Maintenance & Storage

7.1 Regular Maintenance

  • Cleaning：Wipe dust, oil and debris from motor surface; keep cooling fan and vents unobstructed.

  • Monthly Inspection：Check mounting bolts, couplings, cable terminals for looseness; tighten as required.

  • Bearing Lubrication：Factory‑lubricated for life under normal conditions; replace bearings if noise/vibration increases.

  • Encoder Check：Verify encoder cable connections and seal integrity.

  • Brake Check：Test brake holding force and release function periodically.

  • Fan Check：Inspect cooling fan operation and clean blades regularly.

7.2 Storage

  • Store in dry, cool, clean indoor space: temperature 5°C–35°C, relative humidity ≤85% (non‑condensing).

  • Keep in original packaging if possible. Avoid direct sunlight, moisture and dust.

  • Do not stack heavy objects on motor.

  • Shelf Life：12 months in original sealed packaging under recommended conditions.

8. Quality & Warranty

8.1 Compliance

Manufactured to FANUC’s stringent industrial quality and safety standards.

8.2 Testing

100% factory‑tested for dynamic balance, electrical performance, insulation resistance, brake function and cooling fan operation before shipment.

8.3 Warranty

12 months from delivery date under normal use and proper installation. Warranty void if motor is disassembled, modified or damaged by misuse.

9. Ordering Information

  • Model Number：A06B-0142-B675

  • Description：AC Servo Motor, αi A12/2000, 2.1kW, 2000rpm, Medium Inertia, Tapered Shaft, Holding Brake, aI64 Incremental Encoder, Forced Air Cooling, Flying Leads


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