Product Description:

The SE-B4.090.050-14.010 is a brushless synchronous servo motor built by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. In automated production lines, the unit converts drive current from a matched inverter into controlled mechanical rotation, allowing loads to be positioned with repeatable accuracy and high dynamic response. Its feedback options allow the motor to integrate with Rexroth control platforms and provide the torque density needed for compact pick-and-place heads, linear transfer modules, and packaging stations.

Under rated conditions, the rotor reaches a nominal speed of 5000 rpm while supplying a static torque of 8.0 Nm; this combination establishes the continuous operating point. Starting sequences or load surges can be supported by a peak current of 60 A, whereas normal standstill regulation draws 14 A. A torque constant of 0.57 Nm/A links commanded phase current to shaft torque, allowing the controller to predict load behavior. Current rise inside the windings follows an electrical time constant of 9.5 ms, while mechanical acceleration follows a mechanical time constant of 5.2 ms, giving the axis short settling times. The motor generates back EMF in proportion to speed according to a voltage constant of 68 V/1000 rpm. With 9.0 mH of winding inductance and 0.94 Ω of resistance, the stator limits ripple current and thermal loss during operation.

The flange measures 142 mm and has R-grade accuracy, so dowel pins can locate the housing without additional shimming. Power is transferred through a 24 mm shaft that projects 50 mm beyond the bearing set, making it suitable for standard couplings and timing pulleys. Rotor response is influenced by an inertia of 2.18 × 10⁻³ kg·m², which helps limit overshoot when the shaft reverses direction. For brief indexing moves, the motor can deliver a maximum torque of 23.0 Nm, providing additional capacity before the drive applies its current limits.