Product Description:

The SE-LB3.075.030-14.015 is a synchronous servo motor produced by Bosch Rexroth Indramat as part of the SE Synchronous Servo Motors series. The motor is intended for industrial automation applications that require tight position and speed control, such as indexing tables, packaging axes, or light machining spindles. It accepts command signals from a digital drive controller and delivers controlled rotary output for systems that rely on feedback-based motion regulation.

At a nominal speed of 3000 rpm, the rotor can follow typical servo command profiles without requiring mechanical gearbox reduction. The drive may supply up to 57 A of phase current during peak demand, which affects cable sizing and thermal design inside the cabinet. Under steady load, the motor develops 9.3 Nm of static torque, providing sufficient holding force for braking or dwell segments in a cycle. Electromagnetic efficiency is reflected in a torque constant of 0.98 Nm/A; nearly one newton-meter is produced for every ampere in the windings. The generated back EMF reaches 113 V/1000 rpm, so a compatible drive must provide adequate voltage headroom. The motor uses a 2.5 mm² connection cross section and has a winding inductance of 21 mH. Its phase resistance is 2.1 Ω, while the mechanical interface includes a 95 j6 mm pilot diameter and a 19 k5 mm shaft.

The electrical time constant of 10.2 ms indicates how quickly current rises within the coils, while the mechanical time constant of 3.3 ms indicates the rotor’s acceleration response to a torque step. During standstill, the windings can carry 9.5 A to hold position within the motor’s 32-minute thermal time constant. This thermal value governs the rate of temperature rise during sustained operation. The motor withstands shocks up to 6 g, allowing it to operate on moving carriages or vibration-prone frames without damage under the stated shock limit.