SE-B3.055.030-00.000 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B3.055.030-00.000 is part of the SE Synchronous Servo Motors series and has a mass of 10.2 kg with a maximum length of 256 mm. This motor features a nominal speed of 3000 rpm and a static torque rating of 6.8 Nm. It is equipped with a shaft that has a diameter of 19 mm, length of 40 mm, and uses a keyway and feather key design.
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Product Description:
The SE-B3.055.030-00.000 is a synchronous servo motor built by Bosch Rexroth Indramat as part of the SE Synchronous Servo Motors series. Designed for closed-loop positioning and velocity tasks in industrial automation, the unit converts drive current into controlled rotary motion for pick-and-place axes, packaging equipment, and other precision stations. Its compact envelope and integrated feedback interface let it mount directly to gearboxes or machine frames while supporting demanding cycle times. When used with a compatible controller, it provides stable torque output across the commanded speed range and supports accurate speed and position control during repeated starts and stops.
At rated load, the rotor turns at 3000 rpm, and the stator delivers 6.8 Nm of continuous torque so indexing moves can be executed without stall. A torque constant of 1.02 Nm/A links commanded current to produced torque, while a back EMF of 113 V/1000 rpm indicates the generated voltage level the drive must handle during regeneration. Electrical dynamics are shaped by a 30 mH winding inductance, a winding resistance of 3.53 ohms, and an electrical time constant of 3.8 ms, which affect current-loop response. The mechanical time constant of 8.4 ms shows that the rotor can accelerate quickly, which helps the motor follow changing motion commands with good precision.
The motor weighs 10.2 kg and measures 256 mm in overall length, which helps it fit into compact machine layouts. A pilot diameter of 110 mm centers the housing, and the output shaft measures 19 mm in diameter with a 40 mm keyway for standard hub connections. The shaft is supplied with a key and an A6 × 6 × 32 mm feather key, providing a ready mechanical interface for torque transmission. Thermal behavior is moderated by a 29-minute thermal time constant, so the winding temperature rises gradually during short overload periods instead of changing immediately.
