Product Description:

The SE-B4.210.050-00.000 is a synchronous servo motor built by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. In industrial automation, it converts drive current into tightly regulated motion, allowing precise speed and torque control on positioning axes, gantries, and high-cycle pick-and-place heads. The motor couples to machine shafts through its Ø24 × 50 mm tapered shaft and uses an A8×7×40 feather key for positive engagement, while a DIN 332-DS M8 centering hole helps align the rotor with the driven load.

The unit reaches a nominal speed of 5000 rpm, so fast indexing moves can be executed without gear reduction. At standstill, it produces 18 Nm of continuous torque and can deliver up to 52.0 Nm during short overload events such as rapid acceleration. A stator current of 28 A corresponds to the standstill operating point, and each ampere produces 0.64 Nm/A of torque. The winding has a self-inductance of 3.3 mH, which helps moderate current rise and limit ripple when the drive applies high-frequency PWM pulses. The tacho generator outputs 1.8 V per 1000 rpm to provide analog speed feedback for legacy controllers. A cable cross-section of 6.0 mm² helps keep conductor heating within normal limits at rated current.

Thermal behavior and rotor inertia affect both drive tuning and mechanical integration. Copper losses are influenced by a phase resistance of 0.27 ohm, so voltage drop across the winding must be considered during operation. The rotor has a mass moment of inertia of 4.98 × 10⁻³ kg·m², which supports responsive acceleration while maintaining stable motion under changing loads. Overall mass is 22.0 kg, and the housing length does not exceed 347 mm, allowing installation where servo bay depth is limited. A concentric centering pilot and the specified shaft hardware help simplify alignment during assembly and support accurate coupling to the driven machine element.