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Product Description
The Allen-Bradley MPL-B4540F-MJ72AA is an AC servo motor from the low-inertia MPL series, compatible with Kinetix 7000, Ultra 3000, and Kinetix 6000 servo drives, and ideal for electronic assembly, automotive, and material handling. It boasts features like low rotor inertia, 0.16 to 18.6 kW power range, and speeds up to 8000 rpm. This 400V AC motor achieves a max speed of 3000 rpm, rotor inertia of 0.00052 kg-m2, continuous stall torque of 240 in-lbs, peak stall torque of 90 in-lbs, and 2.6 kW output power. Axial load force at 500, 2000, and 3000 RPM is 49, 27, and 22 kg, respectively. It has a 130mm frame size and 101.6mm magnet stack length, featuring a 1024 sin/cos absolute multi-turn encoder with Hiperface, a shaft key, IEC metric flange (type FF), and a 180 rotatable DIN connector. While a motor brake and shaft seal are not standard, they are available as optional add-on kits from Allen-Bradley.
Is Your Device Showing These Signs?
The Allen Bradley MPL-B4540F-MJ72AA servo motor commonly experiences issues such as resolver feedback errors, often stemming from damaged resolver windings or faulty resolver cables. Overheating due to excessive load or inadequate cooling is a frequent problem, leading to thermal shutdown and decreased performance. Bearing failures, indicated by excessive noise or vibration, require immediate attention to prevent rotor damage. Insulation breakdown within the motor windings results in ground faults and short circuits, necessitating motor replacement or rewinding. Finally, connector pin corrosion or damage disrupts signal transmission, causing intermittent operation and control system faults.
Technical specifications
The Allen-Bradley MPL-B4540F-MJ72AA is a 400V AC servo motor from the MPL series, designed for applications like electronic assembly and material handling, and compatible with Kinetix servo drives. Key features include low rotor inertia, speeds up to 8000 rpm, a 130mm frame, and a 1024 sin/cos absolute multi-turn encoder. It delivers 2.6 kW output power, a continuous stall torque of 240 in-lbs, and a peak stall torque of 90 in-lbs. Optional add-ons include a motor brake and shaft seal.
Our Repair Process for the
MPL-B4540F-MJ72AA
Our repair process for the Allen Bradley MPL-B4540F-MJ72AA servo motor begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the reported issue, be it resolver feedback errors traced to damaged windings or cables, overheating attributed to overload or cooling deficiencies, bearing failures identified through noise or vibration analysis, insulation breakdown causing ground faults and short circuits, or connector pin corrosion disrupting signal transmission. Upon identifying the fault, we proceed with the necessary repairs, which include resolver replacement or cable repair, cooling system enhancements, bearing replacement, motor rewinding or replacement in cases of insulation failure, and connector repair or replacement to ensure proper signal integrity. Rigorous testing and quality control measures are implemented post-repair to guarantee optimal performance and reliability before the motor is returned.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.


Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.

Ships from Rochester, NY