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Allen Bradley RDB Direct Drive Motors RDB-B21539-7B72AA

Product image is representative; revision or series may vary. Contact us to request a specific version.

RDB-B21539-7B72AA

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The RDB-B21539-7B72AA is a direct-drive servo motor from the Allen-Bradley RDB Direct Drive Motors series. It operates at 400 volts and has a frame size of 215 mm, making it suitable for various automation tasks.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for RDB-B21539-7B72AA

ManufacturerAllen Bradley
Product TypeDirect-Drive Servo Motor
Product LineRDB Direct Drive Motors
Part NumberRDB-B21539-7B72AA
UPC884951111929
Weight32.00 lbs (14.51 kg)
Housing TypeBearingless Housing
Voltage400V
Frame Size215 mm
Magnet Stacks3
Base Speed750 rpm
FeedbackMulti-turn, 2048 sin/cos, absolute encoder (EnDat protocol)
EnclosureIP65
ConnectorsCircular (SpeedTec) DIN

The RDB-B21539-7B72AA from Allen-Bradley falls under the RDB Direct Drive Motors range and functions as a direct-drive servo motor. This motor has been engineered to operate at a voltage of 400V, which is suitable for various industrial applications. Its frame size measures 215 mm, and it contains three magnet stacks, contributing to its effective performance.

A base speed of 750 rpm allows this servo motor to meet diverse operational requirements. Additionally, it incorporates a multi-turn encoder featuring a resolution of 2048 sin/cos, utilizing the EnDat protocol for high-precision feedback. This capability is essential for ensuring accurate positioning and control.

The RDB-B21539-7B72AA motor is housed in a bearingless construction, enhancing its reliability. It boasts an IP65 enclosure rating, indicating resistance to dust and water ingress, which makes it suitable for challenging environments. The motor connects via Circular DIN SpeedTec connectors to facilitate simple integration with existing systems.

Revision Part #Also known as
RDB-B21539-7B72AA Ser ARDB-B21539-7B72AA/A, Series A, Rev A
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