Product Description:

The SE-LB3.055.030-00.015 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It supplies closed-loop rotary motion to positioning tables, pick-and-place axes, and other industrial automation stages that require accurate speed regulation and repeatable torque generation. The motor face is sealed to an IP67 level, so particles and temporary water immersion do not reach the internal bearings or windings.

An electrical time constant of 8.4 ms indicates how quickly current builds in the stator coils and supports fast control-loop tuning. At its nominal operating point of 3000 rpm, the rotor tracks command frequency without excessive slip. Acceleration is supported by a ramp-up time of 27 ms, allowing the axis to reach its set speed quickly. A static torque capacity of 6.8 Nm keeps loads stationary when motion is halted, while a standstill current of 6.7 A and a winding resistance of 3.5 Ω determine the thermal load placed on the drive. The cylindrical shaft measures 19 mm in diameter and 40 mm in length, and it accepts an A6 × 6 × 32 mm feather key for positive coupling. The overall motor length is limited to 287 mm, helping the unit fit into compact machine layouts.

The combined rotor and tachogenerator inertia is 1.21 × 10⁻³ kg·m², supporting controlled acceleration during dynamic moves, and the complete assembly weighs 10.6 kg. A torque constant of 1.02 Nm/A links drive current to mechanical output, while a voltage constant of 110 V/1000 rpm establishes the back electromotive force that the inverter must accommodate. Heat builds gradually because the thermal time constant is 29 minutes, giving the drive time to respond before the windings reach their temperature limits. The integral tachogenerator delivers 2.7 V/1000 rpm with a tolerance of ±5% for speed feedback. This feedback signal helps the controller maintain stable velocity loops and limit overshoot during rapid changes in speed.