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Bestselling New Synchronous Servo Motor Rexroth R911313027 MSK100D-0300-NN-S1-BG2-NNNN For Industrial Machinery
| Place of Origin | Germany |
| Brand Name | REXROTH |
| Certification | CE |
| Model Number | R911313027 MSK100D-0300-NN-S1-BG2-NNNN |
The REXROTH R911313027 MSK100D-0300-NN-S1-BG2-NNNN is a high-torque synchronous servo motor from the Rexroth MSK / IndraDyn S motor family. It is designed for precision motion-control systems where high torque output, stable speed regulation, accurate feedback, and reliable industrial operation are required. This model is suitable for demanding servo axes in packaging machinery, printing equipment, machine tools, plastics processing lines, material handling systems, converting equipment, and automated production machinery.
This motor belongs to the MSK100D frame size and uses the 0300 winding variant. The complete model code MSK100D-0300-NN-S1-BG2-NNNN identifies a configuration with natural convection cooling, S1 optical encoder feedback, plain shaft with shaft sealing ring, and holding brake 2. The order number R911313027 should be used together with the full model code when checking replacement compatibility or preparing a purchase order. Public supplier listings identify this exact order number as MSK100D-0300-NN-S1-BG2-NNNN, an IndraDyn S synchronous servo motor.
For product weight, the MSK100D technical reference gives 56.0 kg without holding brake and 59.5 kg with holding brake. Because this exact model contains BG2, it should be treated as a brake-equipped version. Therefore, the recommended net motor weight for the REXROTH R911313027 MSK100D-0300-NN-S1-BG2-NNNN is approximately 59.5 kg. Some supplier pages list approximate weight around 123 lb, which is about 55.8 kg, but that appears closer to a base motor or catalog logistics value; for this brake-equipped BG2 configuration, 59.5 kg is the safer technical listing weight.
Main Product Information
| Item | Specification |
|---|---|
| Brand | REXROTH |
| Order Number | R911313027 |
| Full Model | MSK100D-0300-NN-S1-BG2-NNNN |
| Product Family | MSK / IndraDyn S |
| Product Type | Synchronous Servo Motor |
| Frame Size | MSK100D |
| Winding Code | 0300 |
| Cooling Method | Natural Convection |
| Encoder Type | S1 Optical Encoder Feedback |
| Shaft Design | Plain Shaft With Shaft Sealing Ring |
| Holding Brake | Yes, Holding Brake 2 |
| Net Product Weight | 59.5 kg |
| Maximum Speed | 3000 rpm |
| Protection Rating | IP65 |
| Insulation Class | F |
| Typical Application | High-Torque Industrial Servo Axis |
Type Code Interpretation
For Rexroth MSK motors, the full type code is critical. A motor with the same visible frame size may not be a direct replacement if the encoder, brake, shaft, connector, or cooling code is different. The model MSK100D-0300-NN-S1-BG2-NNNN should therefore be checked as a complete code, not shortened to only “MSK100D-0300.”
| Code Section | Meaning |
|---|---|
| MSK | Rexroth IndraDyn S synchronous servo motor series |
| 100D | Motor size 100 with D-length construction |
| 0300 | Winding variant |
| NN | Natural convection cooling |
| S1 | Optical singleturn encoder configuration |
| BG2 | Plain shaft with shaft sealing ring and holding brake 2 |
| NNNN | Standard additional configuration |
The S1 encoder configuration is suitable for precise servo feedback in controlled industrial axes. It is different from M1 multiturn variants and S2 encoder versions, so replacement work should verify the drive feedback interface and parameter set before installation. The BG2 configuration is also important because it means the motor includes a holding brake, which affects weight, wiring, axis safety logic, and replacement compatibility.
Technical Performance Data
The MSK100D-0300-NN motor class is designed for high-torque servo operation. Technical references for the MSK100D-0300 version show a maximum torque of 187 Nm and a maximum speed of 3000 rpm. Rexroth MSK100D-0300 data also lists 48.0 Nm continuous standstill torque at 60 K, 57.0 Nm continuous standstill torque at 100 K, and 93.2 A maximum current for the standard motor technical table.
| Technical Parameter | Value |
|---|---|
| Continuous Torque at Standstill 60 K | 48.0 Nm |
| Continuous Current at Standstill 60 K | 20.7 A |
| Continuous Torque at Standstill 100 K | 57.0 Nm |
| Continuous Current at Standstill 100 K | 24.8 A |
| Continuous Torque With Surface Cooling Reference | 72.0 Nm |
| Maximum Torque | 187.0 Nm |
| Maximum Current | 93.2 A |
| Torque Constant at 20 °C | 2.55 Nm/A |
| Voltage Constant at 20 °C | 157.0 V/min⁻¹ |
| Winding Resistance at 20 °C | 0.35 Ohm |
| Winding Inductance | 5.650 mH |
| Number of Pole Pairs | 4 |
| Maximum Speed | 3000 rpm |
| Cooling Method | Natural Convection |
| Degree of Protection | IP65 |
| Insulation Class | F |
The values above should be used as technical reference data for the MSK100D-0300-NN motor family. Final machine performance also depends on the connected Rexroth drive, cable system, parameter setup, ambient temperature, mechanical load, coupling method, and duty cycle.
Product Weight and Packing Reference
The product weight should be handled carefully because this model includes a holding brake. The correct net motor weight reference for R911313027 MSK100D-0300-NN-S1-BG2-NNNN is approximately 59.5 kg. This is different from non-brake MSK100D models, which are typically around 56.0 kg.
| Weight Item | Reference Value |
|---|---|
| MSK100D Net Weight Without Holding Brake | Approximately 56.0 kg |
| MSK100D Net Weight With Holding Brake | Approximately 59.5 kg |
| Correct Net Weight for R911313027 | Approximately 59.5 kg |
| Supplier Approximate Weight Listing | Around 123 lb on some pages |
| Recommended Listing Weight | 59.5 kg net motor weight |
| Gross Shipping Weight | Confirm according to final packing method |
For international shipment, the gross weight may be higher than the net motor weight. Export packaging may include wooden case protection, foam support, shaft-end protection, moisture-proof wrapping, connector protection, and pallet reinforcement. For a product page, quotation, or Google-indexed listing, the safest wording is net motor weight approximately 59.5 kg; gross packed weight to be confirmed before shipment.
Holding Brake and Safety Considerations
The BG2 configuration includes a holding brake. This is useful for machine axes that need to maintain position when the drive is disabled, when the machine stops, or when power is removed. Public listings for this same model describe it as having a 70 Nm holding brake, which aligns with the brake-equipped nature of the BG2 configuration.
| Brake-Related Item | Description |
|---|---|
| Brake Configuration | Holding Brake 2 |
| Brake Function | Holds the motor shaft when the drive is disabled |
| Typical Brake Use | Position holding, axis security, stop-state holding |
| Important Limitation | Not intended as a repeated dynamic service brake |
| Suitable Axes | Vertical or load-holding axes subject to correct safety design |
| Verification Needed | Brake voltage, control logic, load holding requirement, and machine safety design |
The holding brake should not be used as the primary method for repeated dynamic stopping under load. In vertical axes, lifting systems, or suspended-load mechanisms, the complete machine design must include appropriate safety logic, brake control timing, mechanical risk assessment, and verification of the actual holding requirement.
Design and Functional Characteristics
The REXROTH R911313027 MSK100D-0300-NN-S1-BG2-NNNN is built for controlled movement rather than simple constant-speed rotation. It provides high peak torque, reliable feedback, and strong mechanical construction for servo-driven industrial systems.
| Design Feature | Practical Benefit |
|---|---|
| MSK100D Large Frame | Suitable for medium-to-heavy-duty servo axes |
| 0300 Winding | Provides high torque and 3000 rpm speed class |
| Natural Convection Cooling | Simplifies installation without external fan or liquid cooling |
| S1 Optical Encoder | Supports accurate position and speed feedback |
| Plain Shaft With Seal | Suitable for coupling-based mechanical installation |
| Holding Brake 2 | Helps hold axis position when power is removed |
| IP65 Housing | Supports use in many industrial machine environments |
| High Maximum Torque | Supports acceleration, deceleration, and intermittent overload cycles |
Typical Application Areas
This servo motor is suitable for equipment that requires high torque and precise servo control. It can be used for both spare-part replacement and machine retrofit projects, provided the complete type code and drive configuration match the original system.
| Industry | Typical Application |
|---|---|
| Packaging Machinery | Main drive axis, sealing axis, cutting axis, rotary station |
| Printing Equipment | Roller synchronization, web feed, tension-related control |
| Machine Tools | Feed axis, rotary table, automatic loading mechanism |
| Plastics Machinery | Winding axis, cutting unit, extrusion auxiliary motion |
| Material Handling | Conveyor drive, transfer mechanism, gantry movement |
| Converting Machinery | Slitting, laminating, rewinding, synchronized line control |
| Metalworking Equipment | Positioning axis, forming support movement, feed drive |
| General Automation | High-load servo replacement and production-line retrofit |
Replacement and Compatibility Notes
When replacing this motor, the order number and full type code should be checked carefully. A similar MSK100D motor may not be directly interchangeable if the encoder, brake, shaft, or standard configuration is different.
| Compatibility Check | Reason |
|---|---|
| Order Number R911313027 | Confirms the exact Rexroth material reference |
| Full Type Code | Prevents encoder, shaft, brake, or option mismatch |
| Encoder Type | S1 feedback must match the drive feedback interface |
| Brake Configuration | BG2 includes holding brake 2 |
| Shaft Design | Plain shaft with seal must match coupling and machine design |
| Cooling Method | NN natural convection must match thermal requirements |
| Drive Controller | Drive parameters must match MSK100D-0300 motor data |
| Motor Cable Set | Power, encoder, and brake wiring must be compatible |
Procurement and Inspection Guidance
For purchasing, the buyer should specify both R911313027 and MSK100D-0300-NN-S1-BG2-NNNN. If buying used or refurbished stock, visual and electrical inspection should be performed before installation.
| Inspection Item | Recommended Check |
|---|---|
| Nameplate | Confirm R911313027 and full MSK100D-0300-NN-S1-BG2-NNNN code |
| Encoder | Verify S1 encoder feedback and connector condition |
| Holding Brake | Check brake release and holding function |
| Shaft | Inspect for wear, impact marks, corrosion, or deformation |
| Bearings | Check smooth rotation, noise, and mechanical play |
| Insulation | Perform insulation resistance test before commissioning |
| Connectors | Inspect pins, seals, threads, and cable interface |
| Housing | Check for dents, cracks, corrosion, or improper repair |
| Packing | Protect shaft, encoder connector, power connector, and brake wiring during shipment |
SEO-Oriented Product Summary
The REXROTH R911313027 MSK100D-0300-NN-S1-BG2-NNNN synchronous servo motor is a high-torque IndraDyn S servo motor for industrial automation and precision motion-control systems. It features an MSK100D frame, 0300 winding, natural convection cooling, S1 optical encoder, plain shaft with shaft sealing ring, holding brake 2, IP65 protection, and an approximate net product weight of 59.5 kg. With 57.0 Nm continuous standstill torque at 100 K, 187.0 Nm maximum torque, and 3000 rpm maximum speed, this motor is suitable for packaging machinery, printing equipment, machine tools, plastics machinery, material handling systems, converting machinery, and other high-load servo applications. For accurate replacement and procurement, buyers should confirm both the Rexroth order number R911313027 and the complete model code MSK100D-0300-NN-S1-BG2-NNNN before ordering.
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