Product Description:

The SE-B4.130.030-04.150 is a synchronous servo motor produced by Bosch Rexroth Indramat as part of the SE Synchronous Servo Motors series. In positioning or velocity-regulated axes, the motor converts drive current into controlled mechanical rotation for industrial automation and machine tools. The compact electromagnetic design and integrated brake allow installation on linear stages, pick-and-place gantries, and packaging lines where precise torque and speed regulation are required.

The motor reaches a nominal speed of 3000 rpm at rated conditions, allowing synchronization with common drive controllers. The motor provides a static torque of 13 Nm, while a standstill current of 15 A energizes the stator windings. Dynamic events are handled by a peak current capability of 84 A measured at 20 °C, supplying short bursts of power for acceleration. Magnetic circuit behavior is influenced by a winding inductance of 9.7 mH, which shapes the current rise profile, and by a voltage constant of 99 V/1000 rpm, which links back EMF to shaft speed for drive commutation. The rotor-feedback assembly carries an inertia of 3.08 × 10⁻³ kg·m² including the tachogenerator, and the mechanical time constant of 3.8 ms shows how quickly the rotor reaches a commanded velocity.

The motor’s thermal time constant of 37 min shows how long it can absorb heat before reaching equilibrium, while the electrical time constant of 9.7 ms describes current decay in the windings during PWM modulation. A torque constant of 0.80 Nm/A provides a linear relationship between applied current and developed torque, which supports closed-loop tuning. For position holding, an integrated spring-applied brake supplies 18 Nm of holding torque and is released by 24 V DC ±10% with 1.0 A coil current. The brake adds 0.90 × 10⁻³ kg·m² to rotor inertia, and the copper winding resistance is 0.96 Ω, which contributes to I²R losses during continuous operation.