eSM13B Servo Motor

The eSM13B is a high-performance AC servo motor in ABB's eSM series, offering a compact size with high torque density for precise motion control. A model such as ESM13B-302-304-T1N0A00 is a frame size 130 mm servo motor approximately in the 3 kW class, capable of delivering around 10–12 Nm of continuous torque at base speed (typically 3000 rpm). The motor features a 7-pole pair design for smooth rotation and comes equipped with a high-resolution absolute encoder (denoted by "T1" in the code) that provides precise position feedback without needing homing on startup. It has a standard flange mount and shaft per IEC metrics and usually includes an optional holding brake variant (though "N0" indicates no brake on this particular code). The eSM13B motor construction emphasizes low inertia for fast acceleration (allowing up to 300% peak torque for short bursts) and includes Class F insulation for windings allowing continuous operation with high efficiency. The motor is low-maintenance with sealed bearings and an IP65 enclosure, suitable for demanding industrial environments. When paired with ABB servo drives (like MotiFlex e180 or MicroFlex e190), eSM motors offer excellent dynamic performance – minimal cogging, accurate speed holding, and repeatable positioning – making them ideal for robotics, machine tools, packaging, and other motion-intensive applications.