Product Description:

The SE-LB3.055.030-10.100 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. It serves as a closed-loop rotary actuator that delivers commanded velocity and torque to machine axes in packaging lines, pick-and-place modules, and similar automation equipment. An oil-tight drive-end plate helps keep lubricant away from the windings, and the smooth Ø19 × 40 mm shaft is supplied without a keyway for use with compression couplings or shrink discs.

The motor’s nominal speed is 3000 rpm, allowing direct connection to common gear ratios or belt drives without overspeeding the rotor. At standstill, it can apply 6.8 Nm of static torque to hold loads when motion is inhibited. Dynamic peaks reach 40 A during fast accelerations, while continuous current remains limited to 6.7 A to reduce copper heating. Its torque constant of 1.02 Nm/A means each ampere produces approximately one newton-meter of shaft torque. The voltage constant is 113 V/1000 rpm, which helps the drive predict back EMF and size the DC link. A rotor inertia of 1.21 × 10⁻³ kg·m² balances quick response with load stability, and the 8.4 ms electrical time constant shows how quickly phase current reaches its commanded value.

The motor weighs 10.6 kg and has an overall length of 287 mm, which supports installation where axial space is limited. Its thermal time constant is 29 min, so winding temperature rises gradually during changing load conditions. Stator inductance of 30 mH helps smooth high-frequency ripple in the phase current. A winding resistance of 3.53 Ohm contributes to steady-state copper losses during continuous operation. The unit does not include an integrated brake, so holding force must be supplied by an external mechanism when the axis must remain fixed at rest.