Product Description:

Bosch Rexroth Indramat manufactures the SE-B4.210.050-10.000 servo motor for the SE Synchronous Servo Motors series. This brushless unit supplies rotary motion for positioning axes, pick-and-place heads, and other precision automation stages. A flange size of 142 mm allows direct mounting to gearboxes or machine frames, and the smooth shaft measuring 24 mm by 50 mm is supplied without a keyway, so torque is transferred through compression couplings. The overall length is 347 mm, and the cast housing brings the motor mass to 22 kg, giving a compact package for tightly integrated machines. Its layout suits installations where accurate motion, direct coupling, and a clean exterior are important.

During continuous operation, the rotor can hold a 18 Nm static torque at standstill while drawing a steady 28 A from the drive. Once energized, the motor reaches its nominal mechanical speed of 5000 rpm, and the stator windings have an inductance of 3.3 mH. The electromagnetic design converts current to torque at a rate of 0.64 Nm/A, so the drive can respond predictably to changing load demands. A phase resistance of 0.27 Ω helps limit copper losses and supports the class F insulation system during sustained operation. These electrical characteristics make the motor suitable for repeatable acceleration, controlled holding, and stable closed-loop motion.

Short bursts are covered by a maximum torque reserve of 52.0 Nm, enabled when the inverter delivers up to 174 A for acceleration or shock loads. At those peaks, the combined rotor and tachogenerator inertia of 4.98 × 10⁻³ kg·m² supports a balance between quick response and smooth axis behavior. A back-EMF constant of 68 V/1000 rpm helps the drive match voltage demand to motor speed during operation. The sealed flange, smooth shaft, and lack of a keyway reduce particle traps on exposed surfaces. That arrangement fits clean assembly cells and electronic handling systems where simple exterior geometry is preferred.