Product Description:

The SE-KB4.065.030-00.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. It is installed on closed-loop motion axes in packaging equipment, pick-and-place gantries, and other automated stations that require precise torque and speed regulation. When connected to a compatible drive controller, the motor converts commanded phase current into mechanical power, allowing coupling to belts, gearboxes, or load shafts.

At nominal load, the rotor reaches 3000 rpm and produces a continuous torque of 4.9 Nm. Torque output scales linearly with current because the electromagnetic design provides a torque constant of 1.01 Nm/A, giving the controller a predictable relationship between current and delivered torque. When the shaft is stationary, the windings draw a standstill current of 7.5 A, so drive-side current limiting helps keep the motor within its thermal limits during holding modes. Rapid acceleration is supported by a rotor moment of inertia of 1.71 × 10^-3 kg·m², which permits responsive speed changes while maintaining stability with medium load-inertia ratios.

The motor has a back electromotive force constant of 114 V/1000 rpm, an electrical time constant of 5.3 ms, and a winding inductance of 30 mH. These electrical properties affect current rise and the voltage margin required from the inverter during rapid torque commands. Copper loss is influenced by a phase resistance of 3.39 Ω, while the 11 kg housing dissipates the resulting heat. The motor uses a 185 mm flange and a 19 × 28 mm shaft fitted with an A6 × 6 × 20 feather key, and its overall length is 236 mm. An internal tachogenerator supplies 2.7 V per 1000 rpm for analog speed feedback, while the 8.5 ms mechanical time constant supports smooth and responsive velocity control.