Allen-Bradley MPL-B420P-SK72AA Low-Inertia Brushless AC Servo Motor
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||

Allen-Bradley MPL-B420P-SK72AA Low-Inertia Brushless AC Servo Motor
The Allen-Bradley MPL-B420P-SK72AA is a low-inertia brushless AC servo motor from the MP-Series MPL family, designed for precise motion control in industrial automation systems. It features a 115 mm frame, a 50.8 mm magnet stack, and a rated speed of 5,000 RPM.
This model uses a single-turn high-resolution absolute encoder, a keyless shaft extension, and a right-angle SpeedTEC DIN connector that can be rotated up to 180 degrees. It does not include an integrated holding brake, making it suitable for applications where external holding mechanisms are not required.
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley |
| Manufacturer | Rockwell Automation |
| Model | MPL-B420P-SK72AA |
| Product Type | Low-Inertia Brushless AC Servo Motor |
| Product Series | MP-Series MPL |
| Voltage Class | 460 V AC |
| Rated Power | 1.9 kW |
| Rated Speed | 5,000 RPM |
| Maximum Speed | 5,000 RPM |
| Continuous Stall Torque | 4.74 Nm |
| Peak Torque | 13.5 Nm |
| Rotor Inertia | 0.00026 kg·m² |
| Frame Size | 115 mm |
| Magnet Stack Length | 50.8 mm |
| Feedback Type | Single-Turn High-Resolution Absolute Encoder |
| Feedback Resolution | 1,024 Sin/Cos cycles per revolution |
| Feedback Protocol | Hiperface |
| Shaft Type | Keyless Shaft Extension |
| Brake | No Integrated Brake |
| Connector | SpeedTEC DIN, Right-Angle |
| Connector Orientation | 180° Rotatable |
| Mounting | IEC Metric, Free Mounting Holes (Type FF) |
| Shaft Seal | Not Included |
| Protection Rating | IP50; protection can be IP66 with the appropriate shaft seal and installation |
| Operating Temperature | 0°C to 40°C |
| Dimensions | Frame size: 115 mm; magnet stack: 50.8 mm. Confirm overall length and shaft dimensions using the manufacturer’s mechanical drawing |
| Weight | Approximately 5.44 kg |
FAQ
Q1: What is the Allen-Bradley MPL-B420P-SK72AA?
A1: It is a low-inertia brushless AC servo motor designed for precision positioning, automated machinery, and industrial motion-control applications.
Q2: What is the rated speed of this motor?
A2: It has a rated speed of 5,000 RPM and a maximum speed of 5,000 RPM.
Q3: Does this model include a holding brake?
A3: No. The MPL-B420P-SK72AA is supplied without an integrated holding brake.
Q4: What type of encoder does it use?
A4: It uses a single-turn high-resolution absolute encoder with Hiperface feedback and 1,024 Sin/Cos cycles per revolution.
Q5: Does the motor have a keyed shaft?
A5: No. It features a keyless shaft extension, so the mating coupling must be compatible with the specified shaft interface.
Q6: What is its continuous stall torque?
A6: The motor has a continuous stall torque of 4.74 Nm and a peak torque of 13.5 Nm.
Q7: What connector does this model use?
A7: It uses a right-angle SpeedTEC DIN connector that can be rotated up to 180 degrees to simplify installation and cable routing.
Q8: What should be checked before replacing this motor?
A8: Confirm the voltage class, encoder protocol, keyless shaft dimensions, connector configuration, mounting dimensions, shaft-seal requirements, and servo drive compatibility before installation.
Allen-Bradley MPL-B420P-SK72AA Low-Inertia Brushless AC Servo Motor is in stock. Please contact us for a quick quote and competitive pricing.
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666084105 | |||||||
| +8613666084105 | ||||||||
| 13666084105 | ||||||||
| Add to | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Company Introduction
Xiamen Shengruite Trading Co., Ltd. is a company specializing in the supply of industrial PLC spare parts.
We provide high-quality PLC spare parts to customers in the global manufacturing, energy and power, chemical and other fields.
Since its establishment in 2011, after 13 years of rapid development, the cumulative global shipments have reached 223,650 pieces, with an annual output value of US$50 million.
Successfully served more than 500 customers in more than 100 countries and regions including Saudi Arabia, UAE, the United States, Europe, Africa, and Southeast Asia
Our Mission
Provide customers with the best quality PLC spare parts and the fastest delivery service to ensure that their industrial automation systems are always in the best operating condition.
We provide a 1-year warranty service, and we support returns and exchanges for any issues to ensure your rights and interests are fully protected.
We can provide detailed product images upon request, and our team can arrange warehouse photos for confirmation to ensure you have all the information you need before making a purchase.
Shipping times vary depending on your location. With the support of our 16 global warehouses, we strive to deliver orders as quickly as possible. Contact us to get an estimated delivery time for your specific location.
The minimum order quantity (MOQ) is typically one unit. However, for larger orders, please contact us for potential discounts and pricing details.
Yes, we offer competitive pricing for bulk purchases. Please reach out to our sales team with the specifics of your order to receive a custom quote.
We accept various payment methods for wholesale orders, including bank transfers (T/T), letters of credit, and other options upon agreement. For large transactions, please contact us directly for payment terms.
Yes, we offer flexible ordering options for both small and large quantities. Whether youre looking for a single unit or a large batch, we can accommodate your needs.
We occasionally offer promotional discounts for new wholesale customers. Contact us to learn more about any current offers available for first-time buyers.
If you are unsure of compatibility with your existing setup please provide your system details and our support team can verify compatibility prior to purchase.
Returns are accepted within 30 days if the product is unused, unopened, and in its original packaging. Please note that return shipping and associated costs are the buyer\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\’s responsibility.
Yes, we offer technical support for the installation and integration of our products. Our team can assist with setup, configuration, and troubleshooting to ensure a smooth installation.








