Thông số kỹ thuật servo motor Allen bradley: The Allen Bradley MPL-A4520K-HK22AA smart servo is a 4000 RPM motor. This brushless servo can be connected by bayonet cable connectors that come on top of this servo. Also, this MP low inertia brushless servo motor is a 165 millimeter frame servo motor. This servo doesn’t have a no shaft key and no shaft seal built in. Additionally, it comes with a stack length of 2 in., includes a hall incremental encoder, and no braking built into the low inertia motor.