SE-LB3.055.030-04.019 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-LB3.055.030-04.019 is a synchronous servo motor from the SE Synchronous Servo Motors series with a nominal speed of 3000 rpm and a static torque of 6.8 Nm. It features a peak current of 40 Amps and a brake supply of 24 V DC, with brake on and off times of 40 ms and 55 ms. The motor has a winding inductance of 30 mH and a winding resistance of 3.53 Ohm.
Internal Product Review
The SE-LB3.055.030-04.019 is a Bosch Rexroth Indramat synchronous servo motor with 3000 rpm nominal speed and 6.8 Nm static torque. A 1.02 Nm/A torque constant and 30 mH winding inductance support stable, responsive axis control in precision motion applications. A strong choice for servo systems requiring dependable performance and clean motion behavior.
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Product Description:
The SE-LB3.055.030-04.019 is a drive motor manufactured by Bosch Rexroth Indramat as part of the SE Synchronous Servo Motors series. It is intended for positioning and velocity control in automated machinery, where the integrated tachogenerator and holding brake simplify feedback and brake wiring. By converting electrical commands from a servo drive into mechanical shaft motion, the unit helps coordinate axes in packaging, material-handling, and assembly stations.
The rotor has a nominal speed of 3000 rpm and produces a continuous static torque of 6.8 Nm, indicating the torque available to hold a load without motion. Electromagnetic performance is characterized by a torque constant of 1.02 Nm/A; multiplying this factor by the standstill current of 6.7 A indicates the stall torque available during low-speed moves. Dynamic events are supported by a peak current limit of 40 A, allowing short accelerations without demagnetizing the rotor. The drive electronics receive a back EMF gradient of 113 V/1000 rpm, while the integrated tachogenerator outputs 2.7 V/1000 rpm for speed feedback. Copper losses are governed by a phase resistance of 3.53 Ω. The magnetic circuit has an inductance of 30 mH, which the controller uses for current-loop tuning. Power conductors reach the stator through leads with a cross-sectional area of 2.5 mm².
The electromagnetic brake operates from a 24 V DC supply and engages in 40 ms, while it releases completely after 55 ms; these response times help prevent drift on vertical axes while minimizing cycle delays. A ramp-up time of 27 ms represents the rotor’s acceleration to rated speed under no-load conditions and can be used when setting drive sequences. The shaft follows DIN dimensions of Ø19 × 40 mm and centers against a pilot diameter of Ø95 j6 for repeatable coupling alignment.
