Product Description:

The SE-B4.090.050-00.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. It converts electrical power into regulated rotary motion. This function allows machinery to position loads or follow speed commands with closed-loop accuracy in industrial automation cells such as pick-and-place stations, packaging axes, and spindle drives.

The motor attaches through a 142 mm flange and measures 252 mm in overall length, providing a compact profile with a mass of 13.0 kg for thermal capacity and rigidity. During continuous operation, it reaches a nominal speed of 5000 rpm, while its static torque of 8.0 Nm combines with a standstill current of 14 A to hold loads at zero speed. The motor has a torque constant of 0.57 Nm/A, indicating that the shaft develops just over half a newton-meter for every ampere of phase current. Dynamic operation is supported by a peak current capability of 85 A and a corresponding short-term torque ceiling of 23.0 Nm. Current rise inside the windings occurs within 9.5 ms, so the drive can issue rapid torque corrections without excessive overshoot.

The servo motor has a back-EMF gradient of 68 V/1000 rpm, which the drive uses to predict induced voltage during deceleration and select an appropriate DC-bus capacity. Magnetic energy storage is characterized by a phase inductance of 9.0 mH. Together with a winding resistance of 0.94 Ω, this value affects electrical filtering and heat generation across different duty cycles. Rotor inertia, including the built-in tachogenerator, is limited to 2.18 × 10^-3 kg·m², allowing high acceleration without requiring excessive control gains. The resulting response supports smooth interpolation and helps limit shaft oscillation when the axis is paired with precision gearheads or direct-drive loads.