Product Description:

The SE-B5.320.030-04.000 is a synchronous servo motor produced by Bosch Rexroth Indramat and belongs to the SE Synchronous Servo Motors series. This motor is intended for closed-loop positioning and velocity control on automated machinery where rapid response and repeatable accuracy are required. A Ø32 × 58 mm keyed shaft with a feather key provides positive coupling to gearboxes or pulleys.

During continuous operation, the rotor can reach a nominal speed of 3000 rpm, and each ampere delivered by the drive contributes torque in line with a constant of 1.11 Nm/A. At rated velocity, the back-electromotive force rises at 118 V/1000 rpm, a value used by the amplifier to regulate current. The stator’s phase winding presents an inductance of 4.6 mH, damping current transients and influencing control-loop bandwidth, while its total copper resistance is 0.22 Ω, which contributes to steady-state losses. Mechanical responsiveness is set by a rotor inertia of 13.6 ×10⁻³ kg·m², and this moderate mass allows fast acceleration without excessive drive current. When stationary under field excitation, the motor draws 34 A of standstill current to develop 38 Nm of static torque.

Short-duration load surges can be supplied with 256 A of peak current, enabling dynamic moves beyond continuous ratings. For holding, the integrated brake provides 56 Nm and uses 24 V at 1.5 A. Thermal saturation develops slowly because the winding system has a thermal time constant of 40 min, giving ample margin for intermittent overloads before reaching insulation limits. A square mounting interface with a flange size of 190 mm simplifies attachment to standard machinery frames. The keyway and feather-key shaft style secures torsional load transfer, and the low winding resistance pairs with the stated inductance to minimize I²R heating during sustained cyclic motion.