A06B-0273-B501 Fanuc AC Servo Motor Model Alpha iS 40/4000HV Brake

Buy online your A06B-0273-B501 Fanuc AC Servo Motor Model Alpha iS 40/4000HV from our US e-store Cnc-shopping USA, specialist in CNC machine-tools spare parts.

The Fanuc A06B-0273-B501 is an Alpha iS series AC servo motor designed for precise CNC axis control. Equipped with an integrated holding brake, it is particularly suitable for vertical axes that require load retention during emergency stops or power failures.

Rated at 5.5 kW with a nominal speed of 3000 rpm at 200 Hz, this motor is commonly used on machining centers and CNC lathes equipped with FANUC control systems. It operates with FANUC Alpha iS high-voltage digital servo amplifiers and incorporates a FANUC Alpha iI1000 serial pulse coder (A860-2005-T301) for accurate position feedback and excellent repeatability.

The motor 40/4000HV version is designed for applications requiring high dynamic performance, precise axis control and reliable operation in demanding production environments. The integrated brake secures vertical axes while the closed-loop control architecture ensures smooth and accurate motion.

This reference is frequently selected as a replacement motor for machines originally equipped with the same model. Matching the complete A06B-0273-B501 part number ensures mechanical, electrical and communication compatibility with the existing amplifier and CNC system.

Each motor can be tested before dispatch to verify encoder communication, brake operation and insulation condition. Repair services, exchange programs and refurbished units may also be available depending on stock and service options.

Frequently asked questions about A06B-0273-B501:

Which FANUC amplifiers does the 40/4000HV version typically run with?
It is commonly paired with FANUC high-voltage Alpha i servo amplifiers. Always confirm the amplifier class and ratings against your machine nameplate and maintenance records before ordering.

Does this unit include a holding brake and where is it usually used?
Yes, it includes an integrated holding brake. It is frequently used on Z-axes or other vertical axes where load holding is required at power off.

What encoder feedback is used on this motor?
Alpha iS motors are supplied with a FANUC serial encoder, and many installations use absolute mode with a battery-backed system. Verify encoder specification and parameters on your CNC to match the original setup.

Is it a drop-in replacement for the same code?
When the nameplate matches A06B-0273-B501, it is intended as a direct field replacement. Check flange size, shaft details and keying, as well as connector orientation, to confirm mechanical and electrical compatibility.

Can I substitute an HV motor for a non-HV variant?
Do not mix high-voltage and 200 V class variants. Match the exact motor code and amplifier class to avoid incompatibility or damage.