R911325541 (MSK071D-0300-NN-S2-UG1-RNNN)

Name: R911325541 (MSK071D-0300-NN-S2-UG1-RNNN)
Brand: Indramat Motors
SKU: MSK071D-0300-NN-S2-UG1-RNNN
Price: 270.00 USD
Availability: InStock

MSK IndraDyn S Synchronous Motors

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Phone:
1-888-551-3082

Email:
sales@indramat-usa.com

The digitally controlled synchronous servo motor R911325541 (MSK071D-0300-NN-S2-UG1-RNNN) is designed for natural convection cooling and supports operation with surface cooling. It functions within 0–40°C ambient temperature and up to 1000 meters altitude. The motor provides a maximum torque of 66 Nm with a maximum current of 40.5 A. Continuous torque at standstill is 17.5 Nm at 60K and 20 Nm at 100K overtemperature, increasing to 26.3 Nm with surface cooling. It features a torque constant of 2.12 Nm/A, voltage constant of 134 V/1000 RPM, and rated speed of 3800 RPM. The shaft is plain, mass is 19.6 kg, and it incorporates a rotatable connector and singleturn optical EnDat2.1 encoder with 2048 signal periods resolution. The holding brake provides 23 Nm torque and is electrically released. Additional data includes a winding inductivity of 10,700 mH, a thermal time constant of 54 minutes, and leakage capacitance of 7.2 nF.

Technical Specifications

Cooling Method
Convection Cooling

Ambient Conditions
0 to 40 degrees Celsius, 0 to 1000 meters altitude

Continuous Torque at Standstill for 60K
17.5 Nm

Continuous Current at Standstill for 60K
9.1 Amps

Continuous Torque at Standstill for 100K
20 Nm

Continuous Current at Standstill for 100K
10.7 Amps

Max Motor Torque
66 Nm

Max Current
40.5 Amps

Torque Constant
2.12 Nm/A at 20 Celsius

Voltage Constant
134 V/1000 RPM at 20 Celsius

Motor Winding Resistance
1.26 Ohms at 20 Celsius

Motor Winding Inductance
10.7 millihenry

Leakage Capacitance
7.2 nanofarads

Pole Pairs
4

Thermal Time Constant
54 minutes

Rated Speed
3800 RPM

Motor Weight Including Brake
19.6 kilograms

Holding Torque of Brake
23 Nm

Encoder
Optical singleturn

Housing
Increased Concentricity and Run Out

Shaft Type
Plain with Seal

Connector
240 Degree Rotation

Frequently Asked Questions

How does natural convection cooling affect motor performance in continuous use?

The motor uses natural airflow to manage heat which avoids the need for external fans. The design ensures stable torque delivery but may limit output compared to forced cooling.

Why is high encoder resolution important for industrial automation systems?

The encoder provides precise feedback which improves accuracy in positioning tasks. The high resolution minimizes error and supports smooth motion in demanding automation.

What is the role of winding inductivity in dynamic response of the motor?

The winding inductivity helps smooth current flow during rapid changes in load. The stable current profile supports fast acceleration without instability.

How does the holding brake support safety in vertical or inclined applications?

The holding brake secures the axis when power is removed. The feature prevents unintended movement and ensures reliable positioning under gravity loads.

What are the installation benefits of a plain shaft with a sealing system?

The plain shaft allows compatibility with standard couplings. The integrated seal protects against dust and fluids extending motor service life.

Common Misspellings

MSK071D0300NNS2UG1RNNN

MSK071D 0300 NN S2 UG1 RNNN

MSK-071D-0300-NN-S2-UG1-RNNN

MSK71D-0300-NN-S2-UG1-RNNN

Internal Product Review

The MSK071D-0300-NN-S2-UG1-RNNN servomotor from Rexroth Indramat delivers a continuous torque of 20 Nm and peak torque of 66 Nm. It has an EnDat2.1 singleturn encoder with 2048 signal periods and a holding brake with 23 Nm torque. Ideal for industries such as robotics and automation it ensures precise motion control and reliability in demanding applications.