Product Description:

The SE-LB3.055.030-10.015 is a synchronous servo motor produced by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. In automated machinery, this motor provides closed-loop rotational positioning and speed control. It allows axes such as pick-and-place heads, indexing tables, and packaging spindles to follow precise motion profiles generated by a matching drive controller.

At full load, the unit can deliver up to 16.2 Nm of torque, while continuous operation at its nominal shaft speed of 3000 rpm supports stable throughput in cyclic applications. Momentary demands are met by a peak current of 40 A, while steady holding conditions draw only 6.7 A of standstill current. Current rise inside the windings follows an electrical time constant of 8.4 ms, and the rotor accelerates to the commanded velocity with a mechanical time constant of 3.8 ms. A 30 mH phase inductance and 3.53 Ω winding resistance limit ripple and heat during pulse-width modulated operation. The motor uses a smooth shaft measuring 19 mm in diameter and 40 mm in length without a keyway, so torque is transmitted through clamped couplings or shrink discs. Its static holding capability is 6.8 Nm, providing position retention when motion is paused.

The rotor has an inertia of 1.21 × 10⁻³ kg·m², balancing quick reversals with damping for lightly loaded mechanisms. Heat generated in the copper and laminations dissipates over a thermal time constant of 29 min, allowing intermittent overloads without immediate derating. Electromagnetic conversion is characterized by a torque constant of 1.02 Nm/A, meaning approximately one newton-meter is produced for each ampere of phase current, and a back-EMF voltage constant of 113 V/1000 rpm, which the drive must counteract at speed.