R911391203 (MSK100B-0200-NN-S1-LP0-NSNN)

MSK IndraDyn S Synchronous Motors

MSK100B-0200-NN-S1-LP0-NSNN Series Image

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The R911391203 (MSK100B-0200-NN-S1-LP0-NSNN) is a Bosch Rexroth IndraDyn S synchronous servomotor with a mass of 34 kg. It features a single-turn optical Hiperface encoder with 128 signal periods and a shaft equipped with keyway and sealing ring. The unit is designed for natural convection cooling, presents a thermal time constant of 40 minutes, and is configured without a holding brake. Key specifications include a continuous standstill torque of 33.0 Nm at 17.3 A (100 K), maximum torque of 102 Nm, winding inductivity of 7,600 mH, and a maximum speed of 4100 rpm. The motor is rated IP65 and supports operation from 0 to 40 °C. The power connector is positioned on the left side, and the device exhibits a sound pressure level of 75 dB with four pole pairs.

Technical Specifications

Encoder Type
Single-Turn Position-Tracking Hiperface Optical

Shaft Type
Keyways with Sealing Ring

Inertia Moment
0.01920kgm2

Temperature Sensor
Included

Thermal Time Constant
40mins

Heat Dissipation Method
Natural Convection

Maximum Torque
102Nm

Continuous Torque
42Nm

Weight
34kg

Motor Type
Servo

Protection Rating
IP65

Insulation Class
155

Maximum Speed
4100 RPM

Power Connector Position
Left Side

Sound Pressure Level
75 decibels

Polar Pairs
4

Continuous Torque at 60 K
28Nm

Continuous Torque at 100 K
33Nm

Winding Inductance
7.600mH

Winding Resistance
0.58 ohms

Operating Temperature
0 to +40 degrees Celsius

Voltage Constant at 20 degrees Celsius
129.5 V/1000min-1

Torque Constant at 20 degrees Celsius
2.10 Nm/A

Frequently Asked Questions

Why choose natural-convection cooling on this MSK100B variant, and when would retrofitting auxiliary cooling make sense?

Its natural convection streamlines installation and reduces maintenance where continuous power density is moderate. Its axial/radial blower kits or liquid cooling options are for elevated continuous outputs.

How do 7,600 mH winding inductivity and 17.3 A standstill current shape current control and torque ripple? (MSK100B-0200-NN-S1-LP0-NSNN)

The higher inductivity filters switching harmonics for easing current regulator tuning and reducing ripple torque, while the specified standstill current maps predictably to torque via the motor’s torque constant. It supports stable low-speed servo behavior under load.

What are practical differences between single-turn (S1) and multi-turn (M1/Mx) encoders in the MSK series, and when is S1 adequate?

The single-turn gives absolute angle within one rev, while multi-turn adds turn count via gear or electronic counting. Its S1 configuration is adequate when axis never loses power mid-cycle or homing routines are acceptable across power cycles.

How should I interpret the 33 Nm continuous and 102 Nm maximum torque ratings for MSK100B-0200-NN-S1-LP0-NSNN in cycle design?

The 33 Nm (100 K) for thermal steady-state sizing is important, while short motion segments may draw up to ~102 Nm provided RMS torque respects thermal limits and drive current stays within short-term envelopes from Rexroth curves.

Does the left-side power connector on MSK100B-0200-NN-S1-LP0-NSNN affect EMC or cable planning in multi-axis cabinets?

Yes, the connector orientation simplifies segregation of power and feedback harnesses and helps maintain shield routing and bend radii per Rexroth wiring diagrams for improving EMC compliance and serviceability. It follows IndraDrive connection practices for MSK/QSK motors.

Common Misspellings

Internal Product Review

The MSK100B-0200-NN-S1-LP0-NSNN servomotor from Bosch Rexroth is used in packaging, printing, robotics, and metal-forming industries for precise motion control. It features natural convection cooling and a single-turn optical Hiperface encoder. The motor delivers 33 Nm continuous torque, 102 Nm maximum torque, and has a 7,600 mH winding inductivity.

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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