R911324104 (MSK071C-0300-NN-M1-UP1-NNNN)

MSK IndraDyn S Synchronous Motors

MSK071C-0300-NN-M1-UP1-NNNN Series Image

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The Bosch Rexroth R911324104 (MSK071C-0300-NN-M1-UP1-NNNN) is an IndraDyn S series synchronous servo motor engineered for high-precision, closed-loop motion control. It features a multiturn absolute optical encoder with Hiperface interface, providing 128 signal periods, operating at 7–12 V DC and up to 60 mA. The motor supports a maximum speed of 9000 RPM and produces a continuous torque of 14.0 Nm at standstill (100 K), with a maximum torque of 44.0 Nm. The holding brake is electrically released, delivers 23 Nm torque, and has a peak connection time of 35 ms with a disconnection time of 180 ms. Shaft construction includes a keyway and sealing element, with cooling achieved by natural convection or optional surface cooling. The unit is rated IP65, accommodates ambient temperatures from 0 to 40 °C, and features a rotatable encoder connector (240°). Additional specifications include winding code 0300, inductivity of 10,900 mH, maximum current of 32.9 A, and a motor length designation 'C' in size 071 format.

Technical Specifications

Motor Type
Synchronous Servo Motor

Encoder Type
Optical Multiturn Encoder with Hiperface support

Maximum Encoder Speed
9000 RPM

Encoder Voltage Range
7-12 Volts DC

Maximum Current Consumption
60 milliamps

Integrated Brake Type
Electrical Release Holding Brake

Holding Brake Peak Connection Time
35 milliseconds

Holding Brake Peak Disconnection Time
180 milliseconds

Main Shaft Features
Keyway and Seal

Cooling Method
Convection (Optional Surface Cooling)

Rated Torque at Standstill with Convection
12 Nm

Rated Current with Convection
7.3 Amps

Rated Torque at Standstill with Surface Cooling
18 Nm

Rated Current with Surface Cooling
11 Amps

Sound Pressure Level
Not exceeding 75 dB

Ambient Temperature Range
0-40 degrees Celsius

Protection Class
IP65

Optional Liquid Cooled Continuous Torque
22.8 Nm

Frequently Asked Questions

How is the 23 Nm electrically-released holding brake on MSK071C-0300-NN-M1-UP1-NNNN intended to be used?

It is designed to secure axes at standstill (e.g., vertical loads) and for safe retention during power loss, not as a service brake to stop moving masses. Its dynamic deceleration requires sizing beyond static torque.

Does the 240° rotatable plug on MSK071C-0300-NN-M1-UP1-NNNN simplify cabinet and cable routing?

Yes, being able to rotate the power/encoder plug over 240° allows exit orientation to be matched to machine geometry for reducing bend stress and improving sealing. It also eases service in dense enclosures and multi-motor arrays.

What does the keyway per DIN 6885-1 (“P” option) on MSK071C-0300-NN-M1-UP1-NNNN mean for coupling selection and sealing?

The keyed shaft conforms to DIN 6885-1 dimensions for standard hubs, making torsionally rigid or elastomer couplings straightforward. Its paired shaft-sealing ring improves ingress protection around the journal that is useful for dusty packaging and machining cells.

How does a winding inductivity of 10,900 mH influence drive tuning and current loop dynamics?

Its higher inductivity smooths current ripple and linearizes torque production for aiding low-ripple interpolation with the optical encoder. Its trade-off is a slower current rise, so aggressive bandwidths may require careful voltage headroom and well-tuned feed-forward terms.

How should the 8.5 A/14.0 Nm (100 K, standstill) ratings guide servo sizing for this model?

The continuous standstill ratings validates thermal equilibrium at low duty cycles or holding torque requirements, while 14 Nm at 8.5 A is thermal anchor. Its transient moves can leverage 32.9 A maximum current and 44 Nm peak torque if RMS limits remain compliant.

Common Misspellings

Internal Product Review

The servo motor MSK071C-0300-NN-M1-UP1-NNNN from Indramat integrates a multiturn-absolute Hiperface encoder that offers 128 periods for precise speed and motion control. It has a 240° rotatable plug for easy connectivity and its 23 Nm electrically-released brake ensures safe operations. This unit is designed in a fan-less size-071 structure that delivers 14 Nm by utilizing 8.5 A at standstill and 44 Nm peak torque to fit into packaging, printing, assembly/handling 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

Indramat USA sells factory new and pre-owned surplus products and maintains channels to procure supply. Indramat USA is not affiliated with nor an authorized distributor or representative of any manufacturers, brands or products listed. Designated trademarks, brand names, and brands appearing herein are the property of their respective owners.