SE-B5.320.030-00.101 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B5.320.030-00.101 is a servo motor from the SE Synchronous Servo Motors series. It has a nominal speed of 3000 rpm, a static torque of 38 Nm, and a maximum torque of 92 Nm. The motor features a peak current of 256 A and a torque constant of 1.11 Nm per Ampere.
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Product Description:
Bosch Rexroth Indramat manufactures the SE-B5.320.030-00.101, a member of the SE Synchronous Servo Motors series. This two-phase permanent-magnet motor is intended for closed-loop positioning and velocity control in machine tools, pick-and-place gantries, and automated packaging equipment. Within an Indramat drive system, the rotor couples directly to the load, allowing high acceleration rates without mechanical gear reduction while the stator windings receive modulated current from a compatible inverter to generate the required electromagnetic torque. Its direct-drive arrangement also helps reduce backlash that can appear in geared axis systems.
The continuous operating point is set at 3000 rpm, a speed that matches most servo drive modulation frequencies without oversaturation. Under this condition, the motor can hold 38 Nm of static torque, and it can reach a maximum of 92 Nm during brief load spikes. Such peaks are supported by a permissible phase current of 256 A, while average power loss is limited by a winding resistance of 0.22 Ω and a winding inductance of 4.6 mH. Torque rises roughly proportionally with current because the magnetic coupling factor is 1.11 Nm/A. A voltage constant of 118 V per 1000 rpm represents the back EMF that the inverter must overcome when the rotor reaches nominal speed, and it helps determine suitable supply voltage margin during regenerative events. These electrical values suit motion axes that need fast response while maintaining stable torque production across repeated cycles.
Dynamic behavior is governed by an electrical time constant of 20.4 ms and a rotor mechanical time constant of 2.4 ms, so current and speed can be tuned quickly without instability. Commanded accelerations are aided by a ramp-up time of 54 ms to nominal speed, making the motor suitable for indexing cycles and short travel moves. During duty-cycle operation, the thermal model allows 40 minutes of heat accumulation, expressed by a thermal time constant of 40 min; this window lets the motor absorb intermittent overloads while the cooling circuit equalizes temperature. That behavior is useful in applications where rapid starts and stops alternate with brief dwell periods.
