Product image is representative; revision or series may vary. Contact us to request a specific version.
The 1326AB-A740B-21-K7 servo motor is an Allen-Bradley/Rockwell Automation Bulletin 1326 series servo motor that operates with AC voltage. It is equipped with permanent magnet technology that reduces its inertia as it operaties. The 1326AB-A740B-21-K7 servo motor can operate without derating at an ambient temperature of up to 40 degrees Celsius or 104 degrees Fahrenheit. Its continuous stall torque rating is 56.5 N-m or 500 pounds on an inch and its current rating with continuous torque is 38.5 Amps. The 1326AB-A740B-21-K7 servo motor can generate up to 8.3 kilowatts of output power.
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| Manufacturer | Allen Bradley |
|---|---|
| Product Type | Servo Motor |
| Product Line | 1326 Motors |
| Part Number | 1326AB-A740B-21-K7 |
| Weight | 32.00 lbs (14.51 kg) |
| Max. Op. Speed | 1600 rpm |
| Frame Diameter | 194 mm |
| Rated Motor Speed | 1600 rpm |
| Flange and Shaft Series | IEC Metric Flange with Keyway |
| Motor Rated Torque | N/A |
| Motor Rated Output | 8.3 kW |
| System Continuous Torque | 56.5 Nm |
| System Peak Stall Torque | 132 Nm |
| Standard Option | 41 Nm Holding Brake w/ 24V DC Coil |
| Product Lifecycle Status* | Discontinued/Obsolete |
* The Allen Bradley 1326AB-A740B-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-A740B-21-K7 units instead of migration.
The 1326AB-A740B-21-K7 is a Ferrite AC servo motor from the Allen-Bradley’s Torque Plus series. This servo motor runs on 230 Volts of AC voltage; it can achieve relatively modest Revolution Per Minute rates at 1600 RPM, and this servo motor has a specially designed housing which provides reduced length and increased torque for the device. The stall torque of this motor is around 56.5 N-m (500 pounds on an inch) and it gives 8.3 kW at its output. An IEC Metric Flange is used to mount this device, which has keyway on its shaft. The Allen-Bradley 1326AB-A740B-21-K7 has a 194 millimeter (5.88 inch) frame diameter. The special feature of this Torque Plus series AC drive is 45.2 N-m (400 pounds on an inch) while the spring-set holding brake has a 24 Volt DC actuated coil. A brushless resolver is integrated into the housing, that ensuring durability in harsh environments. This module is guaranteed to safely endure shocks and high ambient temperatures and the resolver supplies position feedback information; the resolution is also adjustable from 512 to 2048 ppr.
Allen-Bradley’s 1391-DES AC Servo Drive is used to control this type of servo motor. This 1391 series control modules should be used with the 1326AB-A740B-21-K7 servomotor for control purposes and to enable this servomotor to reach its optimal performance; one of the advantages for this AC servo motor is that it can be mounted either horizontally or vertically, or generally by any angle. The 1326AB-A740B-21-K7 should be kept in a robust IP65 rated enclosure. There are two thermal switches connected in the series (1A relay contact) for thermal overload signaling and this thermal overload relay is activated when the motor temperature exceeds 155 degrees Celsius (311 degrees Fahrenheit) ±10%. The approximate weight of this device is 14.515 kilograms. The dimensions of the device are 207.5 millimeters (8.17 inches) x 207.5 millimeters (8.17 inches) x 498.2 millimeters (19.61 inches).
| Revision Part # | Also known as | |
|---|---|---|
| 1326AB-A740B-21-K7 Ser A | 1326AB-A740B-21-K7/A, Series A, Rev A | |
| Don't see your particular revision? Contact us now. | ||
The Allen-Bradley 1326AB-A740B-21-K7 has a 1600 rpm Max. Op. Speed, a 194 mm Frame Diameter, and a 1600 rpm Rated Motor Speed. It also contains a 56.5 Nm System Continuous Torque and a 8.3 kW Motor Rated Output.