Product Description:

The SE-B4.170.050-04.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. It converts controlled three-phase electrical energy from a compatible drive into accurate rotary motion for industrial automation tasks such as pick-and-place modules, labeling heads, and lightweight spindle axes. Its sealed frame protects internal components in demanding machine environments. The 21 kg construction also provides stability during rapid operating cycles in compact machine layouts.

At a rated speed of 5000 rpm, the motor delivers a continuous torque of 14 Nm. The electromagnetic section has a torque constant of 0.58 Nm/A, so each ampere of phase current produces more than half a newton-meter of torque. Short-term acceleration is supported by a peak current of 145 A, whereas continuous standstill operation requires 24 A. Drive tuning must account for a phase resistance of 0.37 Ω and a leakage inductance of 4.5 mH, which affect current response and filtering requirements. The 362 mm overall length accommodates an internal brake that applies 21 Nm to hold the shaft when power is removed. A feather key measuring A8 × 7 × 40 secures the attached coupling against rotational slip.

The rotor and stator geometry permits a peak torque of 37.5 Nm during brief overload intervals commanded by the controller. The rotor inertia is 4.08 × 10⁻³ kg·m², supporting quick acceleration and reversal in indexing applications. A mechanical time constant of 12.3 ms contributes to responsive speed changes when the drive adjusts the commanded current. The voltage constant is 67 V per 1000 rpm, providing the back electromotive force value needed when selecting the DC-bus voltage and evaluating regenerative braking. Mechanical power is transferred through a shaft measuring 24 mm in diameter and 50 mm in usable length, allowing direct attachment to compatible gearboxes, timing pulleys, or rigid couplings.