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Allen Bradley 1326 Motors 1326AB-B720E-21-K7

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

1326AB-B720E-21-K7

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The 1326AB-B720E-21-K7 servo motor is a Bulletin 1326 servo motor from Allen-Bradley/Rockwell Automation. It is AC-powered and it is built with ferrite magnet technology. The 1326AB-B720E-21-K7 servo motor’s ferrite magnets are installed in a stack that is 2 inches long inside the motor. Its voltage rating is 460/380 Volts AC. The 1326AB-B720E-21-K7 servo motor has an IEC metric flange with a keyway and a holding brake that is rated at 24 Volts DC coil voltage and 140 pounds on an inch of torque.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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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 1326AB-B720E-21-K7

ManufacturerAllen Bradley
Product TypeServo Motor
Product Line1326 Motors
Part Number1326AB-B720E-21-K7
UPC662453270791
Weight130.00 lbs (58.97 kg)
Voltage460/380V AC
Frame Diameter194 mm
Rated Motor Speed3500 rpm
Flange and Shaft SeriesIEC Metric Flange with Keyway
Motor Rated Torque30.9 Nm
Motor Rated Output6.8 kW
System Continuous Torque30.9 Nm
System Peak Stall Torque88.1 Nm
Standard Option41 Nm Holding Brake w/ 24V DC Coil.
Product Lifecycle Status*Discontinued/Obsolete

* The Allen Bradley 1326AB-B720E-21-K7 has been discontinued by the manufacturer, however we specialize in obsolete parts and can likely still supply surplus and/or refurbished replacement 1326AB-B720E-21-K7 units instead of migration.

The Allen-Bradley 1326AB-B720E-21-K7 Torque Plus Servo Motor features a 460/380V AC voltage rating, with a 194 mm frame diameter, and a rated motor speed of 3500 RPM. This product also contains a 30.9 Nm system continuous torque as well as a 6.8 kW motor rated output. This Torque Plus motor has a specially designed housing which diminishes motor length and at the same time, it increases the continuous torque ratings. This results in creating high-performance, 3-phase, AC, brushless, synchronous servo motors which are products of Rockwell Automation/Allen-Bradley that are designed to meet the stringent needs of high-performance motion systems. The 460V series of AC servo motors are intended for use as part of the Allen-Bradley 1394 Motion Control System.

Each Allen-Bradley 1326AB-B720E-21-K7 Servo Motor features a special flux profile with permanent magnets specially designed by Rockwell Automation/Allen-Bradley to enhance the servo response. It also has a 3-phase, sinusoidal-wound stator field that improves low smooth operation speeds. These servo motors feature TENV construction, the IP65 is the standard enclosure, but the IP67 (-L) is also available as an enclosure option with an optional shaft seal (1326AB-MOD-SSV-xxx) installed. The Allen-Bradley 1326AB-B720E-21-K7 servo motor has an extruded aluminum housing for enhanced heat transfer. It has a 100% continuous-rated output torque when at a stall (0 RPM), a UL-Listed insulation system, and it can be mounted vertically at any angle with the shaft angled up or down. It usually has a closed thermal switch in its motor winding with a rating of 115V AC/ 24V DC at 1A offering a thermal overload indication.

The 1326AB servo motors come in either high-resolution or resolver (standard) encoder feedback devices. The resolver-based servo motors have a rugged brushless resolver which produces perfect position feedback, thus eliminating onboard electronics and allowing it to withstand harsh shocks and vibrations and high operating temperatures. The high-resolution 1326AB-B720E-21-K7 servo motor is accessible in either single or in multi-turn configurations which produce high-resolution encoder feedback for the applications that need precise tolerance.

Revision Part #Also known as
1326AB-B720E-21-K7 Ser A1326AB-B720E-21-K7/A, Series A, Rev A
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