Product Description:

The SE-KB4.090.030-10.000 is a three-phase AC synchronous servo motor produced by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It converts commanded currents from a compatible drive into precise shaft rotation for positioning and indexing tasks in automated production cells. The motor also supports continuous-speed operation on conveyors, pick-and-place axes, and other controlled machinery.

The motor has a nominal speed of 3000 rpm and a standstill current of 10 A. During acceleration, the current can rise to a peak of 62 A to provide the torque required for rapid changes in motion. The motor has a torque constant of 0.90 Nm/A, so each ampere delivered at the terminals produces approximately 0.90 newton-meter of torque. Dynamic electrical behavior is characterized by a time constant of 9.0 ms and an armature winding inductance of 17.1 mH, which affect how quickly the drive can regulate current and torque. The copper windings have a resistance of 1.90 ohms, while the integrated tachogenerator returns 2.7 V per 1000 rpm to the control loop. These electrical values support responsive velocity regulation in machinery with frequent acceleration and deceleration cycles.

The housing has an IP67 protection rating, which prevents dust ingress and protects the motor during temporary immersion. The rotor inertia is 2.18 × 10⁻³ kg·m², providing a balance between quick acceleration and the ability to handle connected loads. A total mass of 13 kg keeps the mounting load moderate for a motor of this capacity. The housing has an overall length of 252 mm, and its smooth 19 × 28 mm shaft is supplied without a keyway for use with clamp-style couplings. A voltage constant of 98 V/1000 rpm relates the generated back electromotive force to rotational speed. This electrical relationship allows the drive to track motor motion if tachogenerator feedback is unavailable.