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Genuine New Synchronous Servo Motor Rexroth R911316328 MSK030B-0900-NN-M1-UG1-NSNN For Light-Load Application
| Place of Origin | Germany |
| Brand Name | REXROTH |
| Certification | CE |
| Model Number | R911316328 MSK030B-0900-NN-M1-UG1-NSNN |
The REXROTH R911316328 MSK030B-0900-NN-M1-UG1-NSNN is a compact synchronous servo motor from the Rexroth MSK / IndraDyn S motor series. It is designed for precision motion-control applications where a small motor body, high speed capability, accurate encoder feedback, and reliable industrial performance are required. This model is especially suitable for compact automation modules, light-load positioning axes, small handling systems, laboratory equipment, electronics manufacturing machines, packaging equipment, indexing mechanisms, and auxiliary servo axes.
Unlike larger MSK071, MSK100, and MSK101 motors, the MSK030B frame is a small-size servo motor intended for applications where installation space and motor weight are important. The full type code MSK030B-0900-NN-M1-UG1-NSNN identifies a motor with MSK030B frame size, 0900 winding, natural convection cooling, M1 multiturn encoder feedback, shaft with keyway and shaft sealing ring, and holding brake 1. The order number R911316328 should be used together with the complete model code when checking replacement compatibility or preparing a purchase request.
For product weight, MSK030B brake-equipped versions are generally treated as compact motors around 1.6 kg net weight in public MSK030B references. Some reseller listings may show higher values such as 9.0 kg, but those are more likely logistics or packed-weight references rather than the bare motor mass. For this complete UG1 brake-equipped configuration, the recommended product listing should state: net product weight approximately 1.6 kg; packed shipping weight to be confirmed before shipment. Public MSK030B listings also confirm that UG1 brake versions use a 1 Nm holding brake, natural convection cooling, and IP65 protection in comparable MSK030B-0900 configurations.
Main Product Information
| Item | Specification |
|---|---|
| Brand | REXROTH |
| Order Number | R911316328 |
| Full Model | MSK030B-0900-NN-M1-UG1-NSNN |
| Product Family | MSK / IndraDyn S |
| Product Type | Synchronous Servo Motor |
| Frame Size | MSK030B |
| Winding Code | 0900 |
| Cooling Method | Natural Convection |
| Encoder Configuration | M1 Multiturn Encoder |
| Shaft Design | Shaft With Keyway |
| Shaft Seal | Included |
| Holding Brake | Yes, Holding Brake 1 |
| Net Product Weight | 1.6 kg |
| Protection Rating | IP65 |
| Thermal Class Reference | 155 |
| Typical Application | Compact Precision Servo Axis |
Type Code Interpretation
The complete Rexroth MSK type code should be checked carefully before replacement. A motor with the same basic MSK030B frame may still differ in encoder type, brake option, shaft design, sealing, connector arrangement, and additional configuration. For this reason, the complete code MSK030B-0900-NN-M1-UG1-NSNN is more useful than only the shortened reference MSK030B-0900.
| Code Section | Meaning |
|---|---|
| MSK | Rexroth IndraDyn S synchronous servo motor series |
| 030B | Motor size 030 with B-length construction |
| 0900 | High-speed winding variant |
| NN | Natural convection cooling |
| M1 | Multiturn encoder configuration |
| UG1 | Shaft with keyway and shaft sealing ring, with holding brake 1 |
| NSNN | Additional configuration code |
The M1 encoder configuration is important for applications where the servo system requires precise rotor position feedback. Multiturn feedback can help retain position information across multiple shaft revolutions, depending on the drive configuration and application design. This can reduce homing requirements and improve restart behavior in compact automation systems.
Technical Performance Reference
The MSK030B-0900 motor class is a small-frame, high-speed servo motor. Public MSK030B-0900 references list a maximum torque of approximately 1.8 Nm, maximum current around 6.8 A, torque constant around 0.29 Nm/A, winding resistance around 7.2 Ohm, and pole-pair count of 3 in comparable MSK030B-0900 configurations. Some references also state a maximum speed of 9000 rpm for comparable MSK030B-0900 models.
| Technical Parameter | Reference Value |
|---|---|
| Motor Frame | MSK030B |
| Winding Variant | 0900 |
| Cooling Type | Natural Convection |
| Maximum Speed Reference | 9000 rpm |
| Maximum Torque Reference | Approximately 1.8 Nm |
| Maximum Current Reference | Approximately 6.8 A |
| Torque Constant Reference | Approximately 0.29 Nm/A |
| Winding Resistance Reference | Approximately 7.2 Ohm |
| Pole Pairs | 3 |
| Encoder Type | M1 Multiturn Encoder |
| Holding Brake | 1 Nm Brake Reference |
| Protection Rating | IP65 |
| Net Weight | 1.6 kg |
These values should be used as practical product-page reference data. For final machine commissioning or engineering replacement, the official motor nameplate, drive parameters, and Rexroth project planning documentation should be checked.
Product Weight and Shipping Reference
The REXROTH R911316328 MSK030B-0900-NN-M1-UG1-NSNN is a compact motor, so its net motor weight is much lower than medium and large MSK motors. A practical net-weight reference for brake-equipped MSK030B versions is approximately 1.6 kg. However, online sales platforms may show a much higher listed weight, such as 9.0 kg, because that value may include packing, stock handling, or shipping reference weight.
| Weight Item | Reference Value |
|---|---|
| Recommended Net Product Weight | Approximately 1.6 kg |
| Holding Brake Configuration | UG1 With Holding Brake 1 |
| Example Reseller Logistics Weight | 9.0 kg Listed on Some Pages |
| Gross Shipping Weight | Must Be Confirmed Before Shipment |
| Packing Note | Carton, foam, shaft protection, and connector protection may increase gross weight |
For product listings, quotation documents, and Google-indexed pages, it is better to separate net motor weight from gross packed weight. The motor itself is compact, but careful packaging is still necessary because the shaft, encoder interface, power connector, and brake connection must be protected during transportation.
Holding Brake Information
The UG1 configuration indicates a brake-equipped version. Public MSK030B references describe comparable UG1 models as using an electrically released 24 V DC holding brake with 1 Nm holding torque. This brake is useful for holding the axis when the drive is disabled or when the machine is stopped.
| Brake Item | Description |
|---|---|
| Brake Configuration | Holding Brake 1 |
| Holding Torque Reference | 1 Nm |
| Brake Voltage Reference | 24 V DC |
| Brake Function | Holds the axis when the drive is disabled |
| Suitable Use | Compact axes requiring position holding |
| Important Limitation | Not intended as a repeated dynamic service brake |
The holding brake should not be used as the main stopping device for repeated braking under load. For vertical axes, suspended loads, or safety-related movement, the machine design should include proper safety logic, brake control timing, mechanical protection, and load verification.
Functional Characteristics
The R911316328 MSK030B-0900-NN-M1-UG1-NSNN is suitable for compact servo axes that require accurate control but do not require the torque capacity of larger MSK motors. Its small size and low weight make it useful in machines where dynamic response, limited space, and lower moving mass are important.
| Design Feature | Practical Benefit |
|---|---|
| Compact MSK030B Frame | Suitable for small machines and limited installation spaces |
| 0900 Winding | Supports high-speed compact servo applications |
| Natural Convection Cooling | Simplifies installation without fan or liquid cooling |
| M1 Multiturn Encoder | Supports precise feedback and position-related applications |
| Shaft With Keyway | Helps provide positive mechanical torque transmission |
| Shaft Sealing Ring | Improves shaft-side protection |
| Holding Brake 1 | Helps hold position during stop or power-off conditions |
| IP65 Protection | Supports use in industrial machine environments |
Typical Application Areas
This motor is suitable for light-load and precision applications where controlled motion is required. It can be used in both new machine construction and spare-part replacement projects when the drive, cable, encoder, and mechanical configuration match the existing system.
| Industry | Typical Application |
|---|---|
| Packaging Machinery | Labeling axis, small feed axis, sealing adjustment axis |
| Electronics Manufacturing | Feeder module, small positioning axis, precision transfer unit |
| Assembly Automation | Fixture positioning, indexing unit, small servo actuator |
| Laboratory Equipment | Test stand movement, compact actuator control |
| Handling Systems | Small pick-and-place module, rotary positioning axis |
| Printing Equipment | Small roller drive, feed adjustment, registration axis |
| Textile Machinery | Compact feed control, winding adjustment, thread handling |
| General Automation | Small servo axis replacement and retrofit projects |
Replacement and Compatibility Notes
When replacing this motor, the buyer should verify both the order number R911316328 and the complete model code MSK030B-0900-NN-M1-UG1-NSNN. Similar MSK030 motors may not be direct replacements if the encoder, brake, shaft, or configuration code is different.
| Compatibility Check | Reason |
|---|---|
| Order Number R911316328 | Confirms the exact Rexroth material reference |
| Full Type Code | Prevents mismatch in encoder, brake, shaft, or configuration |
| Encoder Type | M1 feedback must match the drive system |
| Brake Configuration | UG1 includes holding brake 1 |
| Shaft Type | Keyway shaft must match the coupling or transmission part |
| Cooling Method | NN natural convection must match machine thermal design |
| Cable Set | Power, encoder, and brake cables must be compatible |
| Drive Controller | Motor data must match the drive parameter set |
Procurement and Inspection Guidance
For purchasing, the buyer should request confirmation of the nameplate, shaft condition, encoder feedback, brake function, connector condition, bearing condition, insulation condition, and packing method. This is especially important when buying used or refurbished servo motors.
| Inspection Item | Recommended Check |
|---|---|
| Nameplate | Confirm R911316328 and MSK030B-0900-NN-M1-UG1-NSNN |
| Encoder | Verify M1 feedback and connector condition |
| Holding Brake | Test brake release and holding function |
| Shaft and Keyway | Check for wear, rust, deformation, or impact marks |
| Bearings | Check smooth rotation and abnormal noise |
| Insulation | Perform insulation resistance testing before installation |
| Connectors | Inspect pins, seals, threads, and cable interface |
| Housing | Check for cracks, dents, corrosion, or improper repair |
| Packaging | Protect shaft, encoder connector, brake wiring, and power connector |
SEO-Oriented Product Summary
The REXROTH R911316328 MSK030B-0900-NN-M1-UG1-NSNN synchronous servo motor is a compact IndraDyn S motor for precision industrial automation and motion-control systems. It features an MSK030B frame, 0900 winding, natural convection cooling, M1 multiturn encoder, shaft with keyway, shaft sealing ring, holding brake 1, IP65 protection, and an approximate net product weight of 1.6 kg. With a high-speed 9000 rpm reference, compact construction, 1 Nm holding brake, and accurate encoder feedback, this motor is suitable for packaging machinery, electronics manufacturing, assembly automation, small handling systems, laboratory equipment, textile machinery, printing equipment, and compact servo-driven machine axes. For accurate replacement and procurement, buyers should verify both the Rexroth order number R911316328 and the full model code MSK030B-0900-NN-M1-UG1-NSNN before ordering.
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