SE-LB3.075.030-14.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-LB3.075.030-14.000 is a synchronous servo motor from the SE Synchronous Servo Motors series. It has a nominal speed of 3000 rpm, a static torque of 9.3 Nm, and a peak current of 57 A. The motor features a mass with brake of 13.5 kg and a brake on time of 25 milliseconds.
Internal Product Review
The SE-LB3.075.030-14.000 is a Bosch Rexroth Indramat synchronous servo motor with a nominal speed of 3000 rpm and static torque of 9.3 Nm. Brake response is especially impressive, with a 25 ms brake-on time and 55 ms brake-off time supporting precise machine control. A torque constant of 0.98 Nm/A makes this unit a strong choice for efficient servo performance.
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Product Description:
The SE-LB3.075.030-14.000 is a synchronous servo motor produced by Bosch Rexroth Indramat within the SE Synchronous Servo Motors series. Designed for closed-loop positioning and speed control in automated machinery, the unit converts electrical input from a drive into precise rotary motion for tooling, conveyors, or axis modules. An integrated holding brake and resolver feedback package suit the motor for vertical loads and coordinated multi-axis tasks. Its electrical constants align with mainstream Rexroth digital drive controllers, making it suitable for repeatable motion in automated systems.
At its rated operating point, the rotor reaches 3000 rpm, and the shaft can deliver a continuous static torque of 9.3 Nm. The motor can tolerate a peak demand of up to 57 A during acceleration, while the continuous standstill current is limited to 9.5 A to reduce thermal stress. The torque constant of 0.98 Nm/A links drive current to output torque, and a back-EMF value of 113 V/1000 rpm assists the controller in field-oriented regulation. Electrical dynamics are influenced by a winding inductance of 21 mH and a winding resistance of 2.1 Ω, which affect current ripple and copper losses. From rest, the rotor reaches nominal speed in 30 ms, supporting frequent indexing, and the total motor length including the brake is 327 mm, which helps with machine layout where installation space is limited.
The motor also has specified electrical and thermal time constants that describe how quickly it responds to command changes and heat buildup. A coil electrical time constant of 10.2 ms couples with a rotor mechanical time constant of 3.3 ms, so current transients are quickly translated into speed changes. Heat accumulation is moderated by a thermal time constant of 32 min, allowing intermittent overloads before steady-state limits are reached. The built-in holding brake engages in 25 ms and releases in 55 ms, helping secure suspended or vertical loads during stop conditions. With the brake fitted, the assembly weighs 13.5 kg.
