Kinetix MP-Series

The Kinetix MP-Series is Allen-Bradley's family of premium permanent-magnet rotary servo motors, spanning bulletins MPL (low inertia), MPM (medium inertia), MPF (food-grade epoxy), and MPS (stainless), with 516 catalog numbers covering a broad range of frame sizes, voltage classes, and feedback options. Decoding the catalog number reveals the motor's core attributes: the series-type letter following the "MP" prefix identifies the inertia class or construction (L = low, M = medium, F = food-grade, S = stainless); the next character (A or B) sets the voltage class (A = 200V-class, B = 400V-class); the frame/BCD code (e.g., 3, 4, 45, 5, 6, 8) indicates bolt-circle diameter and physical frame size; the magnet-stack digit (1–6) scales torque and inertia; and the rated-speed letter (e.g., F = 4500 rpm, M = 6000 rpm, U = 8000 rpm) defines top speed. Feedback code characters such as S, P, or R specify resolver or encoder type, while the shaft-key suffix (J = keyed, K = smooth) rounds out the selection. Popular stocked examples include the MPL-B430P-RK72AA (115 mm frame, 400V, 5000 rpm), the high-torque MPL-B1520U-EJ74AA (400V, 7000 rpm), and the MPL-B680F-SJ74AA (400V, 3000 rpm, 165 mm frame). Accessory kits such as the MPF-SST-A45B45 shaft seal are also available. Consult the Kinetix MP-Series Technical Data (KNX-TD001) for complete torque curves, feedback wiring, and mounting dimensions.