The Bosch Rexroth Indramat MSK101D-0300-NN-S2-AG2-RNNN synchronous servomotor from the MSK IndraDyn S Synchronous Motors series delivers high-performance motion control with a compact, robust design. Designed for integration into the Rexroth IndraDrive drive system, this motor offers singleturn encoder operation via the EnDat2.1 interface and provides a system accuracy of ±20 angular seconds. With a nominal speed of 3000 min⁻¹ and a maximum speed of 15000 min⁻¹, it supports demanding indexing and positioning tasks. The integrated holding brake, electrically-released with a torque of 70 Nm ensures secure load retention during power interruption or emergency stops. This model features an enhanced concentricity design to maintain precision under varying loads and reduce vibration.
Technical specifications are centered on precise feedback and robust electrical performance. The motor incorporates an optical encoder technology with 2048 signal periods resolution and a singleturn encoder turn type for deterministic positioning. Its winding code 0300 enables a continuous current at standstill of 34.9 A and a continuous torque at standstill of 57.0 Nm at 100 K. Peak performance is supported by a maximum current of 137.7 A and a maximum torque of 160.0 Nm, while the winding inductivity of 3200 mH shapes current response. The motor’s 101 size and D length form factor align with standard mounting interfaces, and the plain shaft type with sealing ring minimizes backlash and ensures silent operation.
Operational features emphasize thermal management and mechanical resilience. The self-cooling design uses natural convection to dissipate heat through conduction to the ambient, eliminating the need for external fans and reducing maintenance. Built-in KTY84 temperature sensors monitor stator temperature and trigger alerts before reaching critical thresholds. The servomotor requires the Cooling FN constraint for installation to ensure adequate airflow. The rugged housing supports ambient storage temperatures between –20 °C and +80 °C, though it is not rated for use in potentially explosive atmospheres. Connectors must not be mated under load to protect internal circuits and maintain long-term reliability.
Integration into motion control systems is straightforward via the A-Side Power Connector and compatibility with Bosch Rexroth IndraDrive drives. The high concentricity design promotes smooth coupling to gearboxes, couplings, and direct-drive applications, making it suitable for packaging machines, robotics, and CNC axes. Ideal for precision positioning and dynamic motion tasks, the MSK101D-0300-NN-S2-AG2-RNNN excels in applications requiring high torque density, rapid acceleration, and reliable holding functions. The combination of Bosch Rexroth Indramat engineering and the MSK IndraDyn S Synchronous Motors platform ensures seamless integration and consistent performance in industrial automation environments.
Cooling
Natural convection
Power Connector
A-Side
Encoder Interface
EnDat2.1
Encoder Resolution
2048 signal periods
Encoder Technology
Optical
Encoder Turn Type
Singleturn
Motor Length
D
Motor Size
101
Constraint
Requires Cooling FN
Holding Brake
With holding brake, electrically-released
Holding Brake Torque
70 Nm
Design
Increased concentricity
Product Type
IndraDyn S Synchronous Servomotor
Shaft Type
Plain shaft
Winding Code
0300
Continuous Current at Standstill 100 K
34.9 A
Continuous Torque at Standstill 100 K
57.0 Nm
Maximum Current
137.7 A
Maximum Torque
160.0 Nm
Winding Inductivity
3,200 mH