SE-B5.250.030-04.027 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat SE-B5.250.030-04.027 is a brushless servo motor from the SE Synchronous Servo Motors series with a nominal speed of 3000 rpm and a static torque rating of 25.0 Newton-meters. The motor includes an integrated commutation sensor, uses rare-earth magnets, and features a winding thermistor for thermal protection. It is constructed in the normal variant, supports IM B5 mounting, and uses radiation and natural convection for cooling.
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Product Description:
The SE-B5.250.030-04.027 is a synchronous servo motor manufactured by Bosch Rexroth Indramat for the SE Synchronous Servo Motors series. This frame-sized unit is intended for closed-loop industrial automation where rapid acceleration and precise positioning are required on pick-and-place heads, gantry axes, or packaging machines. When paired with a compatible digital drive, the motor converts three-phase electrical power into accurately regulated mechanical torque that keeps motion cycles synchronized with process commands. Its synchronous operation allows the controller to regulate shaft movement in response to changing position and speed commands.
The motor has a nominal speed of 3000 rpm, balancing torque density and servo bandwidth for medium-duty cyclic loads. Its continuous stall torque reaches 25.0 Nm, providing holding force while the motor is energized at zero speed. Winding heat dissipates through radiation and natural convection, allowing installation without an auxiliary fan when adequate ambient airflow is available. The end shield uses an IM B5 mounting configuration, allowing direct flange attachment to gearboxes or machine plates. A rotor fitted with rare-earth magnets provides high magnetic flux density, supporting responsive acceleration without requiring an unnecessarily long housing. The flange arrangement also provides a rigid mounting surface that helps maintain shaft alignment under cyclic loading.
Commutation feedback is supplied by an integrated rotor-position sensor that reports the absolute rotor position to the drive, eliminating the need for a separate external feedback device. A brushless tachogenerator provides additional velocity monitoring and supports precise speed regulation without brushes that can wear during operation. Thermal protection is provided by a winding thermistor, which signals the controller if the coil temperature exceeds a safe operating limit. The motor conforms to vibration grade N, making it suitable for machinery with standard balancing requirements. It uses a normal construction arrangement, and the shaft includes a keyway and feather key for positive torque transfer to a coupling, pulley, or gearbox. The keyed connection prevents relative rotation between the shaft and the attached component when the motor applies torque.
