Product Description:

The SE-LB3.033.030-10.000 is a rotary actuator produced by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. It is a permanent-magnet synchronous servo motor intended for closed-loop positioning and velocity control in machine tools, packaging lines, and assembly cells. By converting electrical drive commands into precise mechanical rotation, the unit forms the link between an electronic motion controller and the driven load in industrial automation tasks.

It develops a static torque of 4.2 Nm, meaning the shaft can hold this load at zero speed. At rated excitation it reaches a nominal speed of 3000 rpm, giving moderate top-end velocity without excessive centrifugal stress. During locked-rotor analysis, the stator windings draw a standstill current of 4.0 A, a reference value for fuse sizing and temperature rise prediction. With a torque constant of 1.02 Nm/A, each ampere supplied by the inverter generates more than one newton-meter of output torque, which helps simplify current-loop scaling in the drive. The combined rotor and tachogenerator assembly presents an inertia of 0.81 ×10⁻³ kg·m², supporting fast indexing with limited kinetic energy during emergency stops.

The motor has a voltage constant of 112 V/1000 rpm, which establishes the back-EMF slope, so the bus voltage must exceed this value at the planned top speed to maintain full torque. Its total mass of 8.5 kg limits reaction forces on lightweight machine structures. A phase inductance of 60 mH helps attenuate switching harmonics, while the winding resistance of 7.9 Ω determines copper losses that must be dissipated through the frame. These values affect cabinet ventilation, cable sizing, and protective relay settings during system integration.