MSK071C-0450-FN-S1-UP0-NNNN

MSK IndraDyn S Synchronous Motors

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The Bosch Rexroth Indramat MSK071C-0450-FN-S1-UP0-NNNN synchronous servomotor from the MSK IndraDyn S Synchronous Motors series is a standard-design IndraDyn S Synchronous Servomotor featuring a liquid cooling system and a shaft with keyway. This MSK071C-0450-FN-S1-UP0-NNNN unit provides a continuous torque at standstill of 14.0 Nm and continuous current of 10.4 A at 100 K, with a maximum torque of 44.0 Nm and maximum current of 40.1 A. The optically based, singleturn Hiperface encoder delivers 128 signal periods through a rotatable 240° encoder connector. With a winding inductivity of 6,700 mH, motor size 071 and length C, and rated speed code 0450, this motor operates without holding brake, ensuring precise motion control and reliable performance in demanding industrial applications.

Technical Specifications

Cooling
Liquid cooling

Encoder Connector
Rotatable, 240°

Encoder Technology
Optical

Encoder Turn Type
Singleturn

Encoder Interface
Hiperface

Encoder Resolution
128 signal periods

Motor Length
C

Motor Size
071

Holding Brake
Without holding brake

Design
Standard

Product Type
IndraDyn S Synchronous Servomotor

Shaft Type
Shaft with keyway

Rated Speed Code
0450

Continuous Current at Standstill 100 K
10.4 A

Continuous Torque at Standstill 100 K
14.0 Nm

Maximum Current
40.1 A

Maximum Torque
44.0 Nm

Winding Inductivity
6,700 mH

Frequently Asked Questions

How does the liquid-cooling path in MSK071C-0450-FN-S1-UP0-NNNN influence continuous duty and thermal stability on tightly loaded axes?

The liquid cooling removes copper and core losses efficiently for helping the motor sustain its 10.4 A standstill current with less derating over long cycles. It preserves servo stiffness and position repeatability in dense enclosures and elevated ambient conditions.

How does the 6,700 mH winding inductivity affect current ripple, drive selection, and current-loop tuning?

The higher inductivity reduces PWM ripple and harmonic heating but slows current rise time, which can limit very fast torque steps. Its drive with adequate DC-bus voltage/switching frequency and retune current-loop bandwidth balances responsiveness and thermal behavior.

What is the practical value of the 240° rotatable encoder connector for cabinet and cable-chain design?

The adjustable exit angle eases routing in constrained machines for reducing bend stress and avoiding EMI-sensitive zones. It also helps maintain service loops for vibration isolation while keeping minimum bend radius within cable specifications.

What controller/feedback compatibility considerations exist when interfacing the motor’s Hiperface encoder with Rexroth drives?

The Rexroth IndraDrive controllers auto-detect Hiperface encoders on the designated feedback slot for streamlining setup and diagnostics. It is important to ensure firmware supports S1 Hiperface then select the correct interpolation and verify STO/SafeMotion options as needed.

How should 14.0 Nm standstill torque and 44.0 Nm peak on MSK071C-0450-FN-S1-UP0-NNNN be used for axis sizing and safety margins?

The standstill torque for thermal/RMS checks and the peak for acceleration transients for applying duty-cycle-weighted RMS calculations. It maintains margin for friction variance and tool wear.

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Internal Product Review

The Indramat’s MSK IndraDyn series servomotor MSK071C-0450-FN-S1-UP0-NNNN uses liquid cooling for thermal management and includes a mechanically balanced keyed design of shaft. It has no holding brake and possess a singleturn encoder of 128 periods for streamlined feedback. This motor is built to deliver 14.0 Nm of stall and 44.0 Nm peak torque to fit into machine-tool, robotics and printing/packaging axes.