Product Description:

The MSK071E-0300-NN-S1-UP1-NNNN from Bosch Rexroth Indramat belongs to the MSK IndraDyn S Synchronous Motors series and serves as a servo actuator for closed-loop motion axes in automated machinery. Classified as a synchronous servomotor, it converts drive-controller current into precise torque and speed without intermediate mechanical transmissions. The unit follows the standard design of the series and is intended for installations where direct coupling to gearboxes, ball screws, or linear stages is required.

Thermal management is handled by natural convection, so the motor relies on ambient airflow across its housing rather than forced fans. Position feedback is supplied through a Hiperface interface, which sends absolute data over a bidirectional serial link to the drive. Within the encoder, 128 signal periods per mechanical revolution are generated by an optical scanning head for fine incremental interpolation in high-resolution control loops. The feedback assembly uses a rotatable 240° connector, allowing the cable exit to be aligned within tight machine frames. Because the encoder is single-turn, the drive receives one absolute position value for each complete shaft revolution without multi-turn counting.

Winding code 0300 identifies the electromechanical setup used for this version and supports axes that require quick acceleration. A factory-installed holding brake provides 23 Nm of torque and is electrically released, so the axis can remain locked when power is removed and disengage during motion. The motor uses motor size 071 with motor length E, which gives a predictable installation envelope when several axes are mounted on a common plate. A shaft with a keyway transmits torque without slip and maintains synchronous phasing with couplings or pulleys during repetitive indexing tasks.