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Rexroth R911316297 MSK070E-0300-NN-S2-UG1-RNNN Servo Motor
| Place of Origin | Germany |
| Brand Name | REXROTH |
| Certification | CE |
| Model Number | MSK070E-0300-NN-S2-UG1-RNNN |
Product Overview
The Rexroth R911316297, complete model MSK070E-0300-NN-S2-UG1-RNNN, is an IndraDyn S synchronous servo motor configured for applications requiring substantial torque, precise EnDat feedback and increased mechanical concentricity.
Unlike standard NNNN versions, this motor carries the RNNN increased-concentricity design. RNNN does not identify an ATEX configuration. The motor also has a plain shaft, an electrically released holding brake and a rotatable electrical connector.
Configuration Highlights
- MSK070E frame with 0300 winding
- Natural-convection cooling
- Optical single-turn EnDat 2.1 encoder with 2048 signal periods
- Plain output shaft with shaft sealing ring
- Electrically released holding brake
- Rotatable electrical connector
- RNNN increased-concentricity design
- IP65 motor protection when correctly installed
Technical Specifications
| Material Number | R911316297 |
| Complete Model | MSK070E-0300-NN-S2-UG1-RNNN |
| Motor Type | Permanent-Magnet Synchronous Servo Motor |
| Cooling | Natural Convection |
| Encoder | S2 Optical Single-Turn EnDat 2.1, 2048 Signal Periods |
| Electrical Connection | Rotatable Connector, Approximately 240 Degrees |
| Shaft | Plain Shaft With Shaft Sealing Ring |
| Holding Brake | Electrically Released, 23 Nm Reference Holding Torque |
| Continuous Standstill Torque at 100 K | 25.0 Nm |
| Continuous Standstill Current at 100 K | 16.7 A |
| Maximum Torque | 65.0 Nm |
| Maximum Current | 49.3 A |
| Pole Pairs | 6 |
| Special Design | RNNN - Increased Concentricity |
| Protection Class | IP65 |
| Net Weight | Approximately 17.8 kg |
| Packed Gross Weight | To Be Confirmed |
Model Code Interpretation
MSK070E defines the motor frame and E-length construction. 0300 is the winding designation. NN identifies natural-convection cooling. S2 specifies an optical single-turn EnDat 2.1 encoder. In UG1, U indicates a rotatable connector, G indicates a plain shaft with sealing ring, and 1 identifies the holding-brake option. RNNN specifies increased concentricity.
EnDat Feedback and Increased Concentricity
The S2 encoder provides single-turn absolute feedback through an EnDat 2.1 interface. The replacement drive and feedback cable must support this encoder protocol; a Hiperface-equipped motor is not a direct feedback-equivalent replacement.
The RNNN version is intended for applications requiring improved concentricity characteristics. Mechanical replacement should preserve the original RNNN design instead of substituting a standard NNNN motor based only on torque or frame size.
Typical Applications
This configuration is suitable for printing cylinders, precision rollers, converting equipment, demanding feed axes and other mechanisms where smooth rotation, accurate feedback and controlled static holding are important.
Replacement Checklist
- Confirm R911316297 and the complete RNNN type code.
- Verify the S2 EnDat 2.1 encoder and compatible feedback cable.
- Check the plain shaft, shaft seal and coupling dimensions.
- Confirm the holding-brake connection and controller logic.
- Verify the increased-concentricity requirement.
- Check drive current capacity and stored motor parameters.
Related Models
Relevant comparisons include other MSK070E-0300 configurations with NNNN or RNNN design, different encoder codes and different brake options. MSK071E-0300 motors belong to a related frame range but have different mechanical and electrical characteristics.
Inquiry and Supply Notes
Provide the motor nameplate, R911 material number, drive model, EnDat feedback-cable number, power-cable number, brake requirements, coupling data and controller project information. Packed gross weight should be confirmed from the actual shipping arrangement.
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