Buy now the A06B-0032-B075 — Atlantechdrives provides this FANUC Beta B2/3000 AC Servo Motor, a compact 0.5 kW brushless servo motor from the FANUC Beta series designed for precision axis control in small and medium CNC machine tools. Straight shaft with A32B absolute encoder. Express worldwide delivery with 12-month warranty.
What Is the A06B-0032-B075?
The A06B-0032-B075 is a FANUC AC Servo Motor from the Beta (β) series, model B2/3000 — FANUC’s economical, compact servo motor family designed for cost-sensitive CNC machine tools where smaller axis loads and lower power requirements make the larger Alpha series unnecessary. The model B2/3000 encodes the key performance parameters: 2 Nm stall torque and 3000 RPM rated speed. The -B075 suffix indicates a straight shaft (no keyway in the base variant, keyed in #0008 and #7008 sub-variants), with the A32B absolute encoder fitted inside the motor’s red cap. The motor produces 0.5 kW continuous output, operating at 3-phase 176V motor input, 200–230 VAC amplifier supply, 200 Hz electrical frequency, 8-pole design with star (Y) winding connection, 2.8 A rated current and 3.2 A stall current. The motor carries IP65 ingress protection, Insulation Class F, and is rated for 0–40°C ambient operating temperature. It weighs approximately 3.5 kg, making it one of the most compact AC servo motors in the FANUC portfolio. The A06B-0032-B075 is part of the original Beta series (non-i generation), designed in conjunction with FANUC Beta servo amplifiers (SVU Beta series) to provide a complete, cost-effective servo solution for turret axes, tailstock axes, sub-spindle positioning axes, and tool magazine index axes in CNC turning centres and machining centres from the late 1990s and 2000s.
Key Technical Specifications
- Part Number: A06B-0032-B075
- Motor Series: FANUC Beta (β) — 200V
- Motor Model: B2/3000
- Continuous Output Power: 0.5 kW
- Stall Torque: 2 Nm
- Rated Speed: 3000 RPM
- Rated Current: 2.8 A
- Stall Current: 3.2 A
- Motor Input Voltage: 176 V (3-phase)
- Amplifier Input: 200–230 VAC, 50/60 Hz
- Electrical Frequency at Rated Speed: 200 Hz
- Poles: 8
- Winding Connection: Y (star)
- Power Factor: 95%
- Back-EMF Constant: 21.4 V / 1000 RPM
- Winding Resistance: 1.45 Ω
- Shaft Type: Straight
- Encoder: A32B (absolute, 32,000 PPR, inside red cap)
- Connectors: 15-pin male (encoder) + 4-pin male (power)
- Ingress Protection: IP65
- Insulation Class: F
- Weight: 3.5 kg
- Ambient Temperature: 0–40°C
- Manual Reference: B-65232 (FANUC Beta Motor Descriptions)
- Manufacturer: FANUC Ltd., Japan
Beta Series Motor Architecture and CNC Applications
The FANUC Beta series was developed as a lower-cost complement to the Alpha series, sharing the same brushless permanent magnet AC architecture but optimised for lower power applications where the additional performance headroom of Alpha motors would add unnecessary cost. Beta motors use the same FSSB-based servo bus communication infrastructure as Alpha series motors when paired with FANUC Beta i series amplifiers, but the original Beta (non-i) generation uses the SVU Beta (Servo Velocity Unit) amplifier with Type A/B interface. The A06B-0032-B075 with its A32B absolute encoder provides 32,000 pulses per revolution of absolute position feedback — sufficient for the positioning accuracy requirements of turret indexing, pallet changer positioning, and sub-spindle synchronisation. Common machine tools fitted with this motor include: 2-axis CNC turning centres using this motor for C-axis positioning or turret drive, small vertical machining centres where the B075 drives the 4th axis rotary table, and gang-tool lathes where a low-power servo axis drives the tool post positioning. The motor is also found in PCB drilling machines, where its compact form factor and 3000 RPM speed suit the fast Z-axis movements required for high-speed drilling cycles.
Maintenance Tips
The A32B encoder in the A06B-0032-B075 is an absolute encoder requiring a backup battery in the CNC controller to maintain the absolute position count when the machine is powered off. If the machine has not been used for an extended period or if the encoder battery alarm (SV-365) is present, replace the CNC’s encoder backup battery immediately — failure to do so will result in loss of absolute position on the next power cycle, requiring a zero-return operation. The backup battery is typically a 3V lithium cell located in the FANUC controller’s battery holder, not inside the motor itself. The A06B-0032-B075 uses the same Red Cap encoder design as the larger Alpha series, making the Oldham coupling inspection relevant here too — check the coupling condition if intermittent SV-380 (excessive position error) alarms appear during specific motion profiles. For the straight-shaft variant, verify the shaft coupling set-screw torque after initial installation, as the 2 Nm stall torque is low enough that under-torqued couplings can slip without triggering a servo alarm, resulting in gradual position offset that appears as dimensional errors in machined parts.
Frequently Asked Questions
Q: What is the difference between A06B-0032-B075, A06B-0032-B075#0008, and A06B-0032-B075#7008?
A: All are B2/3000 Beta motors with the same electrical specifications. The base A06B-0032-B075 has a straight shaft without a keyway. The #0008 variant adds a keyway to the straight shaft for positive torque transmission via a keyed coupling. The #7008 variant similarly has a keyed straight shaft. Select the variant that matches your machine’s coupling design — a keyed shaft is necessary for applications where the full stall torque must be transmitted without relying on shaft friction alone.
Q: Which FANUC servo amplifier is compatible with the A06B-0032-B075?
A: The A06B-0032-B075 (Beta, non-i series) is designed for use with FANUC Beta SVU (Servo Velocity Unit) amplifiers, specifically the SVU1-4 (A06B-6093-H101) for the 2.8A motor. If your system has been upgraded to Alpha i series amplifiers, the motor may also work with an SVM1-12 (A06B-6096-H101) or SVM1-20 (A06B-6096-H102) module, provided the motor type parameter in the CNC is set correctly for the B2/3000 model.
Q: What FANUC servo alarms indicate encoder failure on the A06B-0032-B075?
A: The A32B encoder failure generates SV-364 (battery voltage zero — replace backup battery immediately), SV-365 (battery low warning), SV-366 (pulse coder communication error — hardware encoder fault), and SV-369 (pulse count error). SV-364 and SV-365 are battery alarms only; SV-366 and SV-369 require encoder or cable replacement.
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