The Bosch Rexroth Indramat MSK103D-0300-NN-M2-UG2-RNNN from the MSK IndraDyn S Synchronous Motors series is a high-precision IndraDyn S Synchronous Servomotor. It features a motor size 103 frame with a motor length D housing and a rated speed code 0300, optimizing torque density and dynamic response. The compact design incorporates increased concentricity for reduced vibration and enhanced bearing life, ensuring consistent performance under load. Note that this model is only available with length D, which standardizes installation dimensions across MSK series deployments.
At standstill and 100 K cooling conditions, the motor delivers a continuous torque of 53.0 Nm at continuous current of 30.8 A, while its maximum torque of 138.0 Nm is achieved at a maximum current of 94.7 A, offering a broad operational range. The stator winding exhibits a substantial inductivity of 4,870 mH, smoothing current ripple and improving drive stability. Thermal exchange relies on natural convection, and the plain shaft interface simplifies coupling to gearboxes and load shafts. Safety and positioning are enhanced by an integrated holding brake with 60 Nm torque that is electrically released for reliable clamping when power is removed.
Precision motion feedback is provided by an optical encoder with multiturn absolute counting, delivering 2048 signal periods via a rotatable 240° connector and robust EnDat2.1 interface. This servomotor’s standardized footprint, combined with its advanced feedback and brake features, makes it ideal for machine tools, robotics, and indexing applications requiring repeatable accuracy and torque hold. Integrators benefit from the MSK103D’s balance of compact size and high dynamic performance.
Cooling
Natural convection
Encoder Connector
Rotatable, 240°
Encoder Technology
Optical
Encoder Turn Type
Multiturn Absolute
Encoder Interface
EnDat2.1
Encoder Resolution
2048 signal periods
Motor Length
D
Motor Size
103
Holding Brake
With holding brake, electrically-released
Holding Brake Torque
60 Nm
Constraint
Only available with length D
Design
Increased concentricity
Product Type
IndraDyn S Synchronous Servomotor
Shaft Type
Plain shaft
Rated Speed Code
0300
Continuous Current at Standstill 100 K
30.8 A
Continuous Torque at Standstill 100 K
53.0 Nm
Maximum Current
94.7 A
Maximum Torque
138.0 Nm
Winding Inductivity
4,870 mH