MSK103A-0300-NN-M2-UG0-NNNN Bosch Rexroth Indramat
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MPN: R911324494
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The Bosch Rexroth Indramat MSK103A-0300-NN-M2-UG0-NNNN is part of the MSK IndraDyn S Synchronous Motors series. This servomotor features a plain shaft design and natural convection cooling. It is equipped with a multiturn absolute optical encoder with EnDat2.1 interface and 2048 signal periods of resolution.
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Product Description:
The MSK103A-0300-NN-M2-UG0-NNNN synchronous motor is manufactured by Bosch Rexroth Indramat and belongs to the MSK IndraDyn S Synchronous Motors series. As a compact servomotor, it delivers precise torque and speed control for indexing tables, gantry axes, and other motion tasks within automated machinery. The unit follows the series’ modular concept, allowing users to match winding codes, feedback devices, and mechanical options to the exact performance envelope required by a drive system. Combined with IndraDrive controllers, it forms closed-loop servo axes that maintain position accuracy under varying loads.
Heat is removed through natural convection, so no external fan or liquid circuit is necessary. This simplifies enclosure design and supports continuous operation within the motor’s thermal limits. The motor uses a connector that is rotatable through 240°, letting cable exits align with the cabinet layout while maintaining strain relief. Position feedback travels over the EnDat2.1 digital interface, providing bidirectional communication for parameter storage and condition data. Inside the encoder, an optical disk delivers 2048 signal periods, giving fine angular granularity before interpolation. The sensing principle is optical, which avoids magnet aging effects that can alter long-term accuracy.
With a multiturn absolute encoder, the drive retains up to 4096 mechanical revolutions of position information even after power loss, eliminating the need for homing routines at startup. The motor is built without a holding brake, so static load retention must be handled by drive torque or external clamps. Frame size 103 indicates the motor’s stator outer diameter, and the A length code keeps the axial dimension short where installation depth is limited. A plain shaft permits direct coupling to gearboxes or timing pulleys, and winding code 0300 matches the stator to IndraDrive power modules used for medium current ranges. The standard design also allows the motor to use common MSK accessories without mechanical modification.
Frequently Asked Questions about MSK103A-0300-NN-M2-UG0-NNNN:
Q: How is the MSK103A-0300-NN-M2-UG0-NNNN motor cooled?
A: The MSK103A-0300-NN-M2-UG0-NNNN features natural convection cooling for heat dissipation.
Q: Does the MSK103A-0300-NN-M2-UG0-NNNN motor have a holding brake?
A: This model comes without a holding brake, so it does not provide a mechanical brake for holding position.
Q: What is the capability of the encoder connector on the MSK103A-0300-NN-M2-UG0-NNNN motor?
A: The encoder connector on this motor is rotatable up to 240 degrees, allowing flexible cable orientation during installation.
Q: What kind of feedback does the MSK103A-0300-NN-M2-UG0-NNNN motor encoder provide?
A: It is equipped with an optical multiturn absolute encoder using EnDat2.1, providing precise position feedback with 2048 signal periods of resolution.
Q: What type of shaft is used on the MSK103A-0300-NN-M2-UG0-NNNN motor?
A: The shaft type for this motor is a plain shaft, which does not include a keyway or other modifications.
