SE-LB3.075.030-10.015 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-LB3.075.030-10.015 is part of the SE Synchronous Servo Motors series and offers a nominal speed of 3000 rpm with a static torque of 9.3 Nm. It features a peak current of 57 Amps and a moment of inertia of 1.66 x10^-3 kgm². The servo motor has a mounting type of IM B 5 and a shaft style without keyway or feather key.
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Product Description:
The SE-LB3.075.030-10.015 is a brushless synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. Built for precision rotary axes, it converts controlled three-phase power from a drive into repeatable shaft movement for pick-and-place robots, indexing tables, and packaging machinery. Its IM B5 flange mounting allows the motor to bolt directly to gearboxes or machine frames. The smooth shaft is supplied without a keyway or feather key, allowing the use of clamp couplings that minimize backlash in closed-loop systems.
At standstill, the motor can develop 9.3 Nm of static torque, allowing it to hold vertical or loaded shafts while energized. During acceleration, the drive must supply up to 57 A of peak current, so the inverter output stage and cabling must tolerate this brief surge. Continuous operation supports a nominal speed of 3000 rpm, making the motor suitable for midrange machinery that requires controlled rotary motion. An electrical time constant of 10.2 ms indicates how rapidly the stator current settles after a voltage step and affects the available current-loop bandwidth. The phase circuit has a winding resistance of 2.1 Ω, which contributes to copper losses under steady load and must be considered when matching the motor to a compatible drive.
Short overloads are supported by a maximum torque of 18.6 Nm, providing additional force for rapid indexing or brief cutting loads. Dynamic response is influenced by a rotor inertia of 1.66 × 10⁻³ kg·m², balancing quick reversals with mechanical stability. The torque constant is 0.98 Nm/A, allowing shaft torque to be estimated from the applied phase current. A thermal time constant of 32 min indicates that intermittent overloads cause a gradual temperature rise before reduced output becomes necessary. The winding inductance is 21 mH, helping filter pulse-width modulation ripple and shape the drive’s switching behavior. A 30 ms ramp-up time limits abrupt acceleration and reduces mechanical shock in connected couplings and driven components.
