1326AB-B720F-S2K7L Servo Motor by ALLEN BRADLEY

326AB-B720F-S2K7L is an Allen‑Bradley Rockwell Automation Bulletin 1326AB Torque Plus three‑phase brushless AC servo motor, high‑resolution encoder feedback variant with 24VDC holding brake, widely used as spare part for legacy 1394 and 1391 servo drive platforms on machine tools, printing presses, metal forming and automated production lines.

This B720F frame model is rated for 460V three‑phase input, maximum speed up to 5000 RPM, medium inertia rotor design delivering stable high continuous torque and strong dynamic response for synchronized positioning, cam profiling and indexing motion tasks. The suffix S2 indicates high‑resolution digital encoder feedback, different from resolver‑based 1326AB versions; K7L stands for integrated 24V holding brake plus special shaft / connector configuration. The brake locks the shaft reliably when power drops out, ideal for vertical axes to prevent load dropping during emergency stop or power failure.

The motor housing follows rugged cast construction, sealed to IP65 standard for protection against dust, coolant splash and workshop contaminants. Precision rotor balancing minimizes vibration at high speed. It belongs to the discontinued 1326AB legacy family, so it is mostly purchased for replacement of existing installed equipment instead of new machine build. It pairs natively with Allen‑Bradley 1394 digital servo systems and 1391‑DES drives. Retrofit to modern Kinetix drives requires feedback conversion and mechanical adaptation; direct drop‑in substitution with newer MP‑series motors is not possible.

ESD precautions are mandatory when handling the high‑resolution encoder assembly inside 1326AB-B720F-S2K7L. Improper disassembly of the feedback endcap will damage the encoder and void sealing integrity. Special dedicated power cable and encoder feedback cable assemblies are required for correct wiring.

We supply Allen‑Bradley 1326AB-B720F-S2K7L servo motor, including original surplus stock, fully inspected and tested refurbished units. Each motor will undergo insulation resistance test, encoder signal verification, brake pull‑in test and no‑load run‑in before anti‑static packaging and shipment. We support compatibility review against your existing 1394 rack, cross reference lookup and bulk quotation. Contact us for dimension drawing, wiring pinout, motor personality data and lead time for 1326AB-B720F-S2K7L.

1326AB-B410G-21

Our products are widely used in CNC mechanical metallurgy, petroleum and natural gas, and petrochemical industries,Chemical industry, paper and printing, textile printing and dyeing, machinery, electronic manufacturing, automobile manufacturing,Plastic machinery, electricity, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution.The quoted price is not the actual price. Please contact the shopkeeper before placing the order to confirm the price and delivery time!!!

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