Product Description:

The SE-KB4.020.030-00.000 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. The unit converts precisely modulated drive current into repeatable rotary motion, allowing machine tools, conveyors, and pick-and-place stations to reach commanded positions quickly. Its frame suits medium-duty axes that require closed-loop speed regulation without occupying excessive machine space, making it suitable for automated packaging and material-handling equipment.

For dynamic tasks, the motor delivers a peak torque of 4.7 Nm, while its continuous standstill torque is 2.0 Nm for holding stationary loads when the motor is energized. The rotor inertia of 0.74 × 10⁻³ kg·m² works with a mechanical time constant of 4.6 ms to permit rapid acceleration and responsive motion. At a nominal shaft speed of 3000 rpm, the motor has a standstill current of 2.5 A. Its torque constant of 0.80 Nm/A indicates the torque produced for each ampere of motor current. Back EMF rises by 85 V per 1000 rpm, providing the drive with an electrical response that corresponds to shaft speed. A 185 mm mounting flange supports secure installation, while an A6 × 6 × 20 parallel key transfers torque from the shaft to a compatible coupling. The motor weighs 7 kg, which supports installation on vertical or moving machine assemblies.

The housing has an IP67 protection rating, allowing operation where washdown spray or airborne coolant may be present. The shaft measures 19 × 28 mm and connects to a keyed hub, while the overall body length is 204 mm to accommodate compact machine layouts. The copper windings have an inductance of 81.0 mH. Combined with a phase resistance of 17.30 ohms, this inductance establishes the electrical response that the servo drive must accommodate when regulating current. The winding values help the controller manage current changes and associated heat generation during repeated acceleration, deceleration, and positioning cycles.