New Synchronous Servo Motor Rexroth R911299935 MSK050B-0600-NN-M1-UG0-NNNN Designed For Industrial Motion Controlling

The REXROTH R911299935 MSK050B-0600-NN-M1-UG0-NNNN is a compact synchronous servo motor designed for high-precision industrial motion control. As part of the IndraDyn S MSK motor family, this model is intended for machines that require accurate positioning, stable torque output, responsive acceleration, and dependable long-term operation in demanding automation environments. Its combination of compact mechanical dimensions, natural convection cooling, sealed shaft design, and multi-turn absolute feedback makes it suitable for OEM machine building, retrofit projects, and spare-part replacement planning. Publicly available Rexroth-related documentation identifies this exact order number and confirms that the motor belongs to the MSK050B-0600-NN-M1-UG0-NNNN configuration.

Product Overview

The product information in the table above is based on the exact order-number page, the nameplate image for the motor, and Rexroth family coding references for the MSK platform.

One of the most practical strengths of this motor is that it sits in a very useful middle range for compact servo applications. It is not an oversized motor intended for heavy-axis torque demand, but it is also not a minimal low-duty unit. Instead, it offers a strong balance between frame size, servo responsiveness, and industrial sealing. This is often the range machine designers prefer for feeders, indexing units, light packaging axes, rotary handling modules, and compact transfer systems where installation space is limited but motion quality still needs to be professional and repeatable. That application positioning is an engineering inference drawn from the published torque, speed, protection, and feedback characteristics of the model.

Technical Specifications

The specifications above come from the Rexroth MSK technical documentation for MSK050B-0600-NN and the exact model nameplate for R911299935, which shows the matching type code and weight.

From a selection standpoint, the numbers are significant. A 3.0 Nm continuous standstill torque with a 9.0 Nm maximum torque means the motor can handle stable continuous servo operation while still providing a useful overload margin for acceleration, indexing, or short dynamic peaks. The 6000 rpm maximum speed expands its usefulness across both positioning and moderate-speed rotary applications. In practice, this combination helps engineers cover a broad range of axis requirements without stepping into a physically larger motor class too early. That usually translates into easier mechanical packaging, reduced installation constraints, and a more efficient machine layout.

Configuration Code Interpretation

This configuration interpretation is derived from Rexroth MSK family coding references and the exact product identification sources for the order number R911299935.

A particularly important aspect of this model is the M1 feedback version. In Rexroth MSK coding, M1 refers to a multi-turn absolute encoder based on Hiperface technology. For many automation systems, this is more valuable than a basic incremental solution because it supports reliable position feedback and improves restart behavior after power cycles or machine interruptions. In systems where precise repeatability matters, such as pick-and-place devices, assembly stations, or compact handling equipment, multi-turn absolute feedback can simplify homing strategy and improve operational consistency.

The UG0 part of the configuration is also commercially and technically meaningful. This code indicates a plain shaft with shaft sealing ring and no holding brake. A no-brake configuration is often preferred when the mechanical system already provides sufficient retention, when vertical load holding is not required, or when the designer wants to keep motor mass lower and reduce brake-related wear components. Since the exact nameplate shows a product mass of 3.9 kg, this version remains relatively manageable both for installation and for moving-axis designs where every kilogram matters.

Mechanical and System Advantages

The advantages listed above are based on the combination of published MSK050B-0600-NN technical data, family coding documentation, and the exact motor identification for R911299935.

In real industrial use, reliability is not determined by a single number such as torque or speed. It depends on whether the motor can fit cleanly into the machine concept, work stably with the drive system, maintain good encoder behavior, and survive day-to-day production conditions. This is where the MSK platform has value. Rexroth designed the IndraDyn S MSK family as a modular servo range with multiple frame sizes, feedback options, shaft variants, and cooling concepts. For plant users and maintenance teams, that modularity helps standardize spare parts, reduce engineering variation, and make replacement planning more straightforward. When a motor family is well structured, lifecycle support is easier and stocking strategy becomes more rational.

Typical Application Suitability

The application suitability above is a reasoned engineering assessment based on the motor’s published torque, speed, encoder, sealing, cooling, and no-brake configuration rather than a model-specific official application list.

For buyers, integrators, and maintenance departments, another benefit of the REXROTH R911299935 MSK050B-0600-NN-M1-UG0-NNNN is replacement clarity. Because the order number and type code are clearly linked in public sources, procurement teams can identify the motor more confidently when checking interchangeability, requesting quotations, or preparing spare stock. That reduces the risk of ordering the wrong encoder version, wrong brake version, or wrong shaft execution. In industrial automation, those differences matter a great deal. A servo motor that looks similar externally can still be unsuitable if the feedback system, shaft design, or brake option does not match the original machine requirements.

Conclusion

The REXROTH R911299935 MSK050B-0600-NN-M1-UG0-NNNN is a compact and technically balanced synchronous servo motor for industrial automation. It combines 3.0 Nm continuous standstill torque, 9.0 Nm maximum torque, 6000 rpm maximum speed, IP65 protection, multi-turn absolute feedback, and an exact published weight of 3.9 kg in a configuration that is practical for many precision motion tasks. Its natural convection design and no-brake shaft version make it especially attractive where compact installation, clean mechanical integration, and dependable feedback performance are more important than brake holding capability. For machine builders and end users seeking a reliable Rexroth servo motor for compact high-precision applications, this model remains a highly credible choice.