Product Description:

The SE-B4.170.050-00.101 is a brushless synchronous servo motor engineered by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. It acts as the rotary actuator in closed-loop motion axes, converting drive current into precise torque and speed. Typical applications include automated assembly stations, packaging modules, and indexing tables used across industrial automation.

The nominal speed reaches 5000 rpm, allowing fast cycle execution when commanded by the drive. Under transient demand, the rotor can supply up to 37.5 Nm while absorbing a peak phase current of 145 A. Continuous torque generation per ampere is represented by a constant of 0.58 Nm/A, linking current-loop tuning to load response. Dynamic electrical behavior is characterized by an electrical time constant of 12.3 ms and a mechanical time constant of 4.1 ms; together, they shape acceleration along with the ramp-up interval of 66 ms. At standstill, the windings draw 24 A to hold a static torque of 14 Nm without shaft movement. The drive must offset copper losses caused by a winding resistance of 0.37 Ω, while speed feedback is provided by a tachogenerator that outputs 1.8 V per 1000 rpm within a ±5% tolerance.

Integration with machine frames is simplified by a square flange that measures 142 mm and a shaft measuring 24 mm in diameter and 50 mm in length for direct coupling to gears or pulleys. The laminated rotor has an inertia of 4.08 × 10⁻³ kg·m², balancing quick positioning with stability after the axis settles. The stator coils have an inductance of 4.5 mH, which influences current-ripple suppression during operation. They also generate a back EMF of 67 V/1000 rpm that the inverter must overcome during high-speed operation.