R911315661 (MSK076C-0450-NN-S1-UG0-NNNN)

MSK IndraDyn S Synchronous Motors

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MSK076C-0450-NN-S1-UG0-NNNN Series Image

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The R911315661 (MSK076C-0450-NN-S1-UG0-NNNN) is a Bosch Rexroth IndraDyn S synchronous servomotor featuring a frame size of 076 and a length coded as C. This model operates with a 450 winding code, provides a maximum torque of 43.5 Nm, and a continuous torque at standstill (100 K) of 13.5 Nm, with a maximum current rating of 54.9 A and continuous current at standstill of 13.7 A. The motor shaft is plain with a shaft standard sealing ring. The housing is designed for natural convection cooling, maintaining functionality at ambient temperatures up to 40°C. The electrical connection is a 240-degree rotatable plug. The motor utilizes an optical singleturn Hiperface encoder with 128 signal periods. There is no holding brake included in this configuration.

Technical Specifications

Product
Rexroth IndraDyn S Motor

Max Torque
43.5 Nm

Frame Size
76

Optimum Velocity
5000/min

Winding Code
450

Shaft Seal
Standard

Holding Brake
No

Length
Factory Assigned Code C

Electrical Connection
240-degree Rotatable Plug

Ambient Temperature
40 Degrees

Cooling
Surface-Mode Convection

Frequently Asked Questions

How does the singleturn optical Hiperface (128 periods) on MSK076C-0450-NN-S1-UG0-NNNN affect control precision and commissioning?

The Sin/Cos Hiperface interface with 128 signal periods enables fine interpolation in the drive for improving commutation accuracy and low-speed smoothness. Its 240° rotatable encoder connector also eases cable routing and strain-relief during installation.

Why does the MSK076C-0450-NN-S1-UG0-NNNN specify natural-convection cooling, and how does that relate to its 100 K continuous ratings?

Its natural-convection cooling simplifies integration and lowers acoustic emissions. Its 13.5 Nm / 13.7 A at 100 K reflects thermal equilibrium under that cooling mode. It is also important to ensure enclosure airflow and mounting clearances.

What dynamic headroom do the 43.5 Nm / 54.9 A maxima provide on MSK076C-0450-NN-S1-UG0-NNNN?

These peak values permit short-duration torque surges for rapid indexing, settling or overcoming static friction without upsizing the motor. Its drive should enforce time-at-peak and thermal models to protect insulation and bearings.

Which couplings suit the plain shaft, and what misalignment tolerances should be considered?

The use of backlash-controlled elastomeric or disc couplings or keyless locking hubs is sized for the peak torque and shaft fit. Its angular/parallel misalignment capacity minimize bearing load and maintain servo bandwidth.

How does the ~4.7 mH winding inductance on MSK076C-0450-NN-S1-UG0-NNNN influence current ripple and EMC?

The moderate inductance attenuates PWM ripple to ease current loop tuning and reduce conducted emissions. It also defines the electrical time constant with phase resistance. Matching drive switching frequency and current loop gains to L/R is recommended.

Common Misspellings

Internal Product Review

The MSK076C-0450-NN-S1-UG0-NNNN motor from Bosch is designed is a size 076/Length C with natural-convection cooling and a plain shaft. It has a singleturn optical Hiperface encoder (128 periods) plus a 240° rotatable connector for streamlined alignment. At 100 K it yields 13.5 Nm/13.7 A and its peak attainable values are 43.5 Nm/54.9 A that make it applicable in packaging, robotics and machine-tool axes.

1620 Old Apex Road
Cary, NC 27513, USA

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Indramat USA
1620 Old Apex Road
Cary, NC 27513
USA

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International: 1-919-443-0207

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