Recision New Synchronous Servo Motor Rexroth R911391206 MSK100B-0200-NN-S1-RP0-NSNN For Industrial Automation Systems

The REXROTH R911391206 MSK100B-0200-NN-S1-RP0-NSNN is a heavy-duty synchronous servo motor from the IndraDyn S MSK series, designed for industrial automation systems that require strong torque output, controlled acceleration, accurate positioning, and dependable long-term operation. Public catalog references map order number R911391206 to the exact model MSK100B-0200-NN-S1-RP0-NSNN, while published MSK100B-0200 technical data places this motor platform in the upper range of the MSK family for demanding servo-axis applications.

This motor belongs to a class of servo products typically selected for machine tools, heavy conveying systems, rotary tables, packaging equipment, converting machinery, and other automated production equipment where dynamic response must be combined with real load-handling capability. The published MSK100B-0200 baseline data shows a maximum speed of 4100 rpm, continuous standstill torque of 28 Nm, maximum torque of 102 Nm, maximum current of 66.2 A, and moment of inertia of 0.0192 kg·m². The same Rexroth MSK dimensional data also lists the weight of the MSK100B-0200 platform as 35 kg for the S1 basic motor reference, which is the practical weight normally cited for this configuration family.

Key Specifications

The specification summary above is compiled from the exact order-number mapping for R911391206 and the published Rexroth MSK100B-0200 technical and dimensional data. The weight figure of 35 kg comes from the MSK100B-0200 size reference in the Rexroth MSK documentation.

Product Positioning in Industrial Motion Systems

The MSK100B-0200 platform is not a light compact servo for miniature handling units. It is a substantially built motor intended for higher-load industrial axes where stability, torque reserve, and precision must exist together. In many industrial machines, the motor is expected to do more than simply rotate. It must accelerate mechanical loads smoothly, hold position under controlled conditions, recover from changing load demand, and remain consistent over extended operating cycles. The published torque values of 28 Nm continuous and 102 Nm peak show that this motor is intended for applications where real mechanical resistance exists and where overload capability matters in daily production.

The maximum speed of 4100 rpm gives the motor enough operating range for both direct-coupled and transmission-assisted machine concepts. In direct-drive arrangements, it can support controlled and accurate motion on axes that need torque and positional consistency. In geared systems, the same motor can serve applications that demand stronger output at the mechanism level while still maintaining servo precision. That combination of torque class and speed capability is one of the reasons MSK100-frame motors are often used in serious OEM equipment rather than only in simple constant-speed drive duties. This is an engineering interpretation based on the published torque-speed data of the MSK100B-0200 family.

Why the Weight Matters

In industrial procurement, maintenance planning, and machine design, weight is not a secondary detail. A motor weight of 35 kg affects mounting structure, bracket selection, shipping arrangements, installation handling, and even service planning in the field. For replacement jobs, the correct weight helps service teams prepare proper lifting and alignment procedures. For machine builders, it affects the mechanical layout of the axis, especially in applications where the motor is mounted on moving assemblies or where structural vibration must be controlled.

The 35 kg figure also reflects the mechanical seriousness of the MSK100B frame. Compared with smaller servo motors used on light-duty automation cells, this model clearly belongs to a more robust class. That does not make it oversized; rather, it indicates that the motor is intended to operate in industrial scenarios where sustained torque capability, rigid construction, and long-term reliability are more important than minimizing every kilogram. In practical terms, this makes the MSK100B-0200 a good candidate for medium-to-heavy servo axes in production machinery. This conclusion is based on the published frame size, torque class, and weight data.

Functional Advantages

The functional advantages listed above are grounded in the official MSK100B-0200 performance and dimensional data and in standard motion-control application practice.

Typical Industrial Applications

From an application perspective, the REXROTH R911391206 MSK100B-0200-NN-S1-RP0-NSNN is well suited for equipment where repeatable torque delivery and controlled motion quality are essential. Typical examples include servo-driven conveyor sections, rotary indexing stations, web-handling machines, packaging lines with larger driven assemblies, machine tools, and process machinery with high-load positioning tasks. In these environments, the motor is expected to move more than a light mechanism; it often has to manage inertia from tooling, rollers, or process-side mechanical components while still maintaining accurate command response. The published torque and inertia values make that type of positioning realistic for this motor class.

Its IP65 protection class is also commercially important. In ordinary factory environments, motors are exposed to dust, coolant mist, oil vapor, and general industrial contamination. IP65 does not remove the need for proper installation, cabling, and sealing discipline, but it does indicate that the motor is built for normal industrial-duty conditions rather than delicate indoor laboratory use only. That makes the product more attractive for OEMs and end users who require reliability in real production environments.

Purchasing and Replacement Considerations

For buyers, the most important identification point is the combination of the exact order number R911391206 and the full model code MSK100B-0200-NN-S1-RP0-NSNN. In Rexroth systems, suffix differences are not cosmetic. They can affect execution details, compatibility, and replacement suitability. For that reason, purchase orders, quotation sheets, warehouse records, and maintenance documents should always preserve the full code instead of simplifying the motor to only “MSK100B” or “MSK100B-0200.” The available catalog references clearly show that R911391206 corresponds to this exact full model designation.

For system integrators, the better approach is not to ask whether the motor is merely “powerful enough,” but whether its torque-speed behavior, inertia level, protection class, and execution code match the drive system and machine mechanics already in use. The published MSK100B-0200 data shows a motor designed for substantial servo duty. That makes it suitable for serious automation projects, but correct application still depends on amplifier matching, machine load characteristics, mounting arrangement, and exact configuration compatibility. That is a professional engineering recommendation based on the product family data and exact order-number mapping, not a guess.

Technical Reference Table for Commercial Use

This commercial-use summary is derived from the same published product mapping and MSK100B-0200 technical reference data.

Conclusion

The REXROTH R911391206 MSK100B-0200-NN-S1-RP0-NSNN is a robust industrial synchronous servo motor built for demanding motion-control tasks where precision, torque reserve, and mechanical reliability are all required. Based on publicly available Rexroth MSK100B-0200 data, it offers 4100 rpm maximum speed, 28 Nm continuous standstill torque, 102 Nm peak torque, 0.0192 kg·m² inertia, IP65 protection, and an approximate product weight of 35 kg. Those figures place it in a strong position for medium-to-heavy industrial servo applications rather than light automation duty. For OEM projects, spare-parts sourcing, and industrial sales documentation, this model should be presented as a serious Rexroth motion product for equipment that demands both control accuracy and real mechanical capability.