MSK101D-0300-FN-S1-BP0-NNNN

MSK IndraDyn S Synchronous Motors

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The MSK101D-0300-FN-S1-BP0-NNNN servomotor from Bosch Rexroth Indramat’s MSK IndraDyn S Synchronous Motors series features liquid cooling. It employs optical singleturn encoder technology with a Hiperface interface and 128 signal periods resolution. At 100 K it delivers 57.0 Nm continuous torque and achieves up to 160.0 Nm maximum torque. The standard model lacks a holding brake and has a winding inductivity of 3,200 mH.

Technical Specifications

Cooling
Liquid cooling

Power Connector
B-Side

Encoder Technology
Optical

Encoder Turn Type
Singleturn

Encoder Interface
Hiperface

Encoder Resolution
128 signal periods

Motor Length
D

Motor Size
101

Holding Brake
Without holding brake

Design
Standard

Product Type
IndraDyn S Synchronous Servomotor

Shaft Type
Shaft with keyway

Rated Speed 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

Frequently Asked Questions

What are the installation constraints due to the winding inductance of 3,200 mH?

The relatively high inductance slows current build-up, which may limit torque responsiveness at higher dynamics unless the drive compensates with voltage headroom and control tuning. In multi-axis systems, cable length and stray inductance add further phase lag, so keep leads short and properly sized.

How does the Hiperface optical singleturn encoder with 128 signal periods impact precision?

The 128 signal periods means there are 128 cycles per revolution to interpolate within, giving fine angular resolution when used with interpolation in the drive. Combined with absolute positioning, this approach simplifies initialization while retaining high dynamic control accuracy.

In robotics or CNC, how does the lack of a holding brake influence safety or system design?

Without a holding brake, the motor cannot passively resist load when unpowered, so you’ll need external mechanical locks or zero-torque safety strategies. In multi-axis machines, you might require brakes on gearboxes or cams to maintain fail-safe stance.

What mechanical stresses (radial/axial) can the rotor support, and how should shaft loads be managed?

In the MSK series, allowable radial and axial shaft loads are specified in the Project Planning Manual; exceeding them shortens bearing life or causes misalignment. Always apply loads within those limits and use proper bearings or couplings to isolate misalignment.

How do cable routing and EMC considerations affect performance and noise in a liquid-cooled servo?

High currents (peak ~137.7 A) demand low-impedance, screened cables to reduce voltage drop and noise coupling; avoiding cable loops and keeping cable separation from fragile analog signals is critical. Use common-mode chokes and grounding strategies to suppress noise back into the drive.

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Internal Product Review

The MSK101D-0300-FN-S1-BP0-NNNN servomotor by Bosch Rexroth is used in CNC machines, robotics, and packaging systems. It delivers 57.0 Nm continuous torque at standstill and 160.0 Nm maximum torque. The motor features liquid cooling, a keyed shaft, and an optical singleturn encoder with Hiperface interface.