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R911321738 (MSK100A-0300-NN-S1-BP0-NNNN)

MSK IndraDyn S Synchronous Motors

Rated 4.1 stars (11 total reviews)
  In-Stock, Ships 3-5 Days
Expedited Lead Times on Select Parts
1 Year Warranty Included
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Expedited Lead Times on Select Parts
1 Year Warranty Included
Free Ground Shipping
The Bosch Rexroth MPN R911321738 (MSK100A-0300-NN-S1-BP0-NNNN) is an IndraDyn S series synchronous servomotor with natural convection cooling, standard design, and a motor size of 100 in length A configuration. It employs a shaft with keyway and is built to IP65 environmental protection standards with insulation class 155. The motor provides continuous torque of 17.0 Nm and a continuous current of 11.6 A at standstill (100 K), and achieves a maximum torque of 54.0 Nm at a maximum speed of 5200 rpm. The power connector is located on the B-side, and the unit does not include a holding brake. Rotor position is tracked by a singleturn optical Hiperface encoder providing 128 signal periods. The MSK100A-0300 variant operates optimally in ambient temperatures from 0 to +40 °C and can be installed up to 1000 m above sea level. The unit features a winding inductivity of 11,200 mH and a thermal time constant for surface cooling of 39 minutes. A sealing ring on the output shaft protects against lubricant ingress.

Technical Specifications

IP Rating
IP65

Insulation Class
155

Maximum Speed
5200 rpm

Maximum Torque Output
54 Nm

Working Temperature Range
0 to +40 degrees Celsius

Shipping Temperature Range
-20 to +80 degrees Celsius

Maximum Installation Height
1,000 meters above mean sea level

Continuous Torque at 100K
17 Nm

Constant Current
11.6 A

Polar Pairs
4

Thermal Time Constant
39 minutes

High Constant Torque
22.5 Nm

Low Constant Current
15.3 A

Encoder Type
Single-Turn Hiperface

Sealing Ring
Yes

Electrical Connection
B side of housing.

Why choose the B-side power connector orientation in dense machine frames and how does it affect EMC/EMI compliance?

Its B-side routing can shorten cable runs to drives and separate power from feedback harnesses for reducing loop area and radiated emissions. Its maintained segregation and proper shielding/grounding improves noise immunity of encoder channels and current sensors.

How does the 11,200 mH winding inductivity on MSK100A-0300-NN-S1-BP0-NNNN influence current ripple and achievable servo bandwidth?

The high phase inductance attenuates PWM ripple and smooths torque production at the expense of higher electrical time constants. Its current-loop tuning accounts for L/R limits, inverter switching frequency and desired crossover to avoid phase-lag instability.

What are the mechanical trade-offs of the shaft-with-keyway interface compared to taper or spline couplings on precision axes?

The keyed shafts simplifies hub alignment and transmit torque reliably but can introduce micro-backlash if key fit isn’t controlled. The spline or shrink-fit couplings can raise torsional stiffness, yet require tighter machining and installation tooling.

What mounting and fastening guidance applies to MSK size-100 frames to preserve alignment under dynamic torque?

The Rexroth’s flange assembly is appropriate for grade fasteners, torque values and flatness checks that sustains both static load and operational forces. Its proper mechanical seating and strain-relieved cabling reduces bearing loads and vibration-induced drift.

How does the Hiperface singleturn optical encoder on MSK100A-0300-NN-S1-BP0-NNNN improve commutation alignment and position fidelity during startup and cyclic motion?

The Hiperface scheme provides absolute position over one revolution plus high-resolution sin/cos incremental tracks for simplifying phase initialization and minimizing index searches. Its hybrid analog/digital channeling yields precise interpolation and controller-synchronous updates for smooth servo loops.

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Internal Product Review

The MSK100A-0300-NN-S1-BP0-NNNN servomotor from Indramat is sized 100 and it relies on natural convection cooling. It is equipped with optical feedback encoder of 128 signal periods for motion and speed control. This unit provides 17.0 Nm torque at stationary and up to a peak value of 54.0 Nm by utilizing 45.9 A of current. It has keyway shaft and B-side power connector. It is widely deployed in systems like machine tools, packaging and printing.

Warranty

1-year-warranty
Indramat USA 1 Year Warranty

Repair

product repair We offer a repair service for the MSK100A-0300-NN-S1-BP0-NNNN.
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