MSK103D-0300-NN-M1-UG2-NNNN Bosch Rexroth Indramat
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MPN: R911330881
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The Bosch Rexroth Indramat MSK103D-0300-NN-M1-UG2-NNNN is part of the MSK IndraDyn S Synchronous Motors series. This synchronous servomotor has a plain shaft, motor size 103, and motor length D. It features natural convection cooling, an IP65 protection rating, and operates in temperatures from 0 to 40 degrees Celsius. The motor includes a multiturn absolute optical encoder with Hiperface interface and a holding brake providing 60 Nm torque.
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Product Description:
The MSK103D-0300-NN-M1-UG2-NNNN is an IndraDyn S synchronous servo motor manufactured by Bosch Rexroth Indramat and supplied within the MSK IndraDyn S Synchronous Motors series. It is intended for precise position and velocity control in industrial automation, where compact dimensions and high torque density are needed. In automated equipment, it converts electrical commands from a matched drive into controlled rotary motion for indexing axes, handling systems, and similar servo applications. The motor uses size 103 with D length, so the mounting geometry stays consistent within that frame. It also has a plain shaft and a standard mechanical design, while winding code 0300 is matched to compatible drive controllers.
Thermal management relies on natural convection, which removes heat without forced airflow and keeps the external layout simple. The housing is rated IP65, so it resists dust ingress and low-pressure water jets when installed correctly. An electrically released holding brake provides 60 Nm of static torque to hold vertical or oscillating axes during a power loss. The encoder connects through a rotatable 240° connector, delivers 128 signal periods per revolution, and communicates over Hiperface for accurate closed-loop feedback. This arrangement supports reliable signal transmission while allowing more flexible cable routing in confined machine spaces.
The feedback system includes a multi-turn absolute function, so stored position data remains available over multiple revolutions and homing is not required after shutdowns. Continuous operation is permitted in ambient temperatures from 0 to 40 °C, which suits many controlled industrial environments. Coil insulation is rated at Class 155, allowing the windings to tolerate elevated internal temperature before thermal limits are reached. The encoder and thermal design support stable servo operation in applications that require accurate restart behavior, repeatable positioning, and dependable motion control throughout normal machine duty.
Frequently Asked Questions about MSK103D-0300-NN-M1-UG2-NNNN:
Q: What length options are available for the MSK103D-0300-NN-M1-UG2-NNNN motor?
A: This model is only available in length D, and no other length options are offered.
Q: What type of encoder is built into the MSK103D-0300-NN-M1-UG2-NNNN?
A: The MSK103D-0300-NN-M1-UG2-NNNN uses a multiturn absolute optical encoder with a Hiperface interface.
Q: Does the MSK103D-0300-NN-M1-UG2-NNNN include a holding brake, and what is its torque rating?
A: This motor is equipped with an electrically-released holding brake that provides a holding torque of 60 Nm.
Q: How is the MSK103D-0300-NN-M1-UG2-NNNN cooled during operation?
A: The cooling method for this motor is natural convection, requiring no external cooling devices.
Q: What level of protection does the MSK103D-0300-NN-M1-UG2-NNNN offer against dust and water?
A: With a protection rating of IP65, this motor is dust-tight and protected against water jets from any direction.
