Product Description:

The SE-KB4.040.030-10.000 is a synchronous servo motor built by Bosch Rexroth Indramat as part of the SE Synchronous Servo Motors series. In industrial automation systems, this motor supplies closed-loop torque and velocity so that indexing tables, feeder arms, and light material-handling axes can follow precise motion profiles commanded by the drive controller. Its synchronous design supports accurate response to changing command signals during repetitive motion.

The shaft can rotate at a nominal speed of 3000 rpm, giving a fixed relationship between electrical frequency and mechanical output for repeatable cycle times. When the rotor is locked, the motor develops 4.9 Nm of static torque, which is useful when sizing holding brakes or external locking devices. Transient overloads are supported by a peak phase current of 32 A, which the inverter may deliver for short accelerations. Current in the windings rises to its target in 7.0 ms, and this electrical time constant affects how quickly the control loop can establish commanded torque. The stator’s behavior is influenced largely by a winding inductance of 42.5 mH and a winding resistance of 5.89 Ω, which affect copper losses and the drive’s voltage demand during dynamic operation.

The back electromotive force generated during rotation is quantified by a voltage constant of 106 V/1000 rpm, a parameter used by the drive for speed estimation and field-weakening limits. Mechanical responsiveness is aided by a rotor inertia of 1.22×10⁻³ kg·m², allowing the motor to meet a 50 ms ramp-up time without overshoot while still withstanding load disturbances. Overall unit mass is 9 kg, and the housing length of 220 mm helps the motor fit into compact machine frames. The motor can deliver 8.8 Nm of maximum torque for short duty, has a 7.8 ms mechanical time constant, and uses a 0.91 Nm/A torque constant for current-to-force conversion. A standstill current of 5.4 A is also relevant for thermal sizing in continuous stall applications.