Product Overview
The Rexroth R911391203 MSK100B-0200-NN-S1-LP0-NSNN is an MSK permanent-magnet synchronous servo motor intended for accurate closed-loop position, speed and torque control. It combines the MSK100B frame, 0200 winding, natural-convection cooling, S1 single-turn feedback, keyed output shaft and an ATEX-related NSNN design suffix.
This is an order-specific configuration. Material number R911391203 and complete model MSK100B-0200-NN-S1-LP0-NSNN should be checked together. A standard NNNN motor or an increased-concentricity RNNN motor must not be treated as an automatic replacement for this NSNN version.
Product Identification
| Material Number |
R911391203 |
| Complete Model |
MSK100B-0200-NN-S1-LP0-NSNN |
| Product Type |
Synchronous Servo Motor |
| Base Motor |
MSK100B-0200 |
| Cooling |
Natural Convection |
| Encoder |
S1 Optical Single-Turn Hiperface Encoder |
| Connection Code |
L, Fixed Connector Orientation |
| Shaft |
Keyed Shaft with Shaft Sealing Ring |
| Holding Brake |
Without Holding Brake |
| Design |
NSNN, Standard ATEX Design |
Reference Technical Data
| Maximum Speed |
4,100 rpm |
| Continuous Torque at Standstill |
28 Nm |
| Maximum Torque |
102 Nm |
| Continuous Current at Standstill |
14.7 A |
| Maximum Current |
66.2 A |
| Rotor Moment of Inertia |
0.0192 kg·m² |
| Approximate Basic Motor Weight |
34 kg |
These values are reference data for the MSK100B-0200 basic motor. Available continuous output depends on the drive, DC-bus voltage, ambient temperature, mounting, thermal conditions and machine duty cycle.
Configuration and Application Notes
The S1 feedback configuration uses an optical single-turn encoder with Hiperface communication. It identifies absolute angular position within one shaft revolution. The installed drive and feedback cable must support this encoder interface.
The keyed shaft provides positive torque transmission through a suitable keyed coupling. Coupling dimensions, key fit, alignment and permissible bearing loads must be confirmed. Brake code 0 means that this motor has no integrated holding brake and should not be used where a vertical axis relies on a motor brake for load retention.
The NSNN suffix identifies an ATEX-related configuration. The required hazardous-area classification, motor marking, certificates, temperature class, drive restrictions and installation requirements must be confirmed before quotation and operation.
Replacement Checklist
- Confirm R911391203 on the motor nameplate.
- Compare the complete NSNN suffix.
- Verify the S1 encoder and feedback cable.
- Confirm the L connector orientation.
- Check the keyed shaft and coupling.
- Confirm that no integrated brake is required.
- Verify ATEX documentation for the operating area.
Inquiry Information
For an accurate quotation, provide the motor nameplate, machine model, drive-controller model, hazardous-area requirements and required quantity. Preferred inquiry reference: Rexroth R911391203 / MSK100B-0200-NN-S1-LP0-NSNN.
