The REXROTH R911312896 MSK100D-0300-NN-M1-AP0-NNNN is a high-torque synchronous servo motor from the Rexroth MSK / IndraDyn S motor series. It is designed for industrial automation systems that require accurate motion control, strong torque reserve, stable dynamic response, and dependable mechanical integration. This motor is suitable for machine tools, printing machines, packaging lines, plastics machinery, material handling systems, forming equipment, converting machinery, and other servo-driven industrial equipment.
The complete type code MSK100D-0300-NN-M1-AP0-NNNN identifies a motor with MSK100D frame size, 0300 winding, natural convection cooling, multiturn absolute encoder, and shaft with keyway without holding brake. The Rexroth order number R911312896 should be used together with the full model code when checking replacement compatibility, preparing a purchase order, or verifying the motor against an existing machine nameplate.
For weight, the technical reference for the MSK100D frame gives 56.0 kg without holding brake and 59.5 kg with holding brake. Because this model uses the AP0 configuration, it should be treated as a non-brake version, so the recommended net motor weight is approximately 56.0 kg. Some stock or reseller listings show 76.0 kg, but that value is better understood as a packed stock-item logistics reference, not the bare motor mass.
Main Product Information
| Item |
Specification |
| Brand |
REXROTH |
| Order Number |
R911312896 |
| Full Model |
MSK100D-0300-NN-M1-AP0-NNNN |
| Product Family |
MSK / IndraDyn S |
| Product Type |
Synchronous Servo Motor |
| Frame Size |
MSK100D |
| Winding Code |
0300 |
| Cooling Method |
Natural Convection |
| Encoder Type |
Multiturn Absolute Encoder |
| Shaft Design |
Shaft With Keyway |
| Holding Brake |
No |
| Net Weight |
56.0 kg |
| Maximum Speed |
3000 rpm |
| Protection Rating |
IP65 |
| Insulation Class |
F |
Type Code Interpretation
The Rexroth MSK type code contains important configuration information. For replacement work, the complete model should be checked carefully because motors with the same basic frame size may still differ in encoder type, shaft design, brake option, connector arrangement, and machine compatibility.
| Code Section |
Meaning |
| MSK |
Rexroth IndraDyn S synchronous servo motor series |
| 100D |
Motor size 100 with D-length construction |
| 0300 |
Winding variant for this motor frame |
| NN |
Natural convection cooling |
| M1 |
Multiturn absolute encoder configuration |
| AP0 |
Shaft with keyway, without holding brake |
| NNNN |
Standard additional configuration |
The M1 multiturn encoder is one of the most important features of this motor. It allows the servo system to recognize absolute shaft position across multiple revolutions, depending on the drive and parameter configuration. This is useful for machines where restart accuracy, reduced homing time, and controlled recovery after power interruption are important.
Technical Performance Data
The MSK100D-0300-NN configuration is a high-output servo motor variant. According to MSK100D technical data, this motor class provides 48.0 Nm continuous standstill torque at 60 K, 57.0 Nm continuous standstill torque at 100 K, and 187.0 Nm maximum torque. The maximum speed for the MSK100D-0300 version is 3000 rpm. These values make the motor suitable for medium-to-heavy servo axes that require both continuous torque and strong peak torque during acceleration or load changes.
| 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 |
| Thermal Time Constant |
90.0 min |
| Degree of Protection |
IP65 |
| Insulation Class |
F |
Product Weight and Shipping Reference
The REXROTH R911312896 MSK100D-0300-NN-M1-AP0-NNNN should be listed with a net motor weight of approximately 56.0 kg, because the AP0 configuration does not include a holding brake. This is different from brake-equipped MSK100D models, which are typically heavier. The brake version reference weight is approximately 59.5 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 Weight Reference for R911312896 |
Approximately 56.0 kg |
| Reseller Logistics Weight Seen Online |
76.0 kg |
| Practical Gross Weight |
Confirm according to final packing method |
For international shipment, the gross weight may be higher than the motor net weight. Export packing often includes wooden case protection, foam inserts, shaft protection, anti-moisture wrapping, reinforced carton structure, and pallet handling. Therefore, for product listings and Google-indexed product pages, it is better to state net motor weight: approximately 56.0 kg, while noting that the packed shipping weight must be confirmed before shipment.
Functional Characteristics
The R911312896 motor is built for demanding industrial motion tasks where a standard low-torque servo motor is not sufficient. Its large MSK100D frame and 0300 winding allow it to deliver high torque output while maintaining controlled servo behavior. The natural convection cooling design also simplifies installation compared with motors requiring external fan or liquid cooling systems.
| Feature |
Practical Benefit |
| High Maximum Torque |
Supports acceleration, deceleration, and intermittent high-load cycles |
| Multiturn Absolute Encoder |
Helps maintain position information across multiple revolutions |
| Natural Convection Cooling |
Reduces installation complexity where standard cooling is sufficient |
| Shaft With Keyway |
Provides positive mechanical torque transmission |
| No Holding Brake |
Suitable for horizontal or externally secured axes |
| IP65 Protection |
Suitable for many machine-mounted industrial environments |
| 3000 rpm Maximum Speed |
Supports medium-speed high-torque servo applications |
| Large Frame Construction |
Suitable for heavier mechanical transmission systems |
The absence of a holding brake is not a disadvantage if the application does not require the motor itself to hold a vertical or suspended load. For vertical axes, hoisting mechanisms, or axes with gravity-driven movement risk, a brake-equipped motor or an external safety brake should normally be considered.
Application Areas
The REXROTH R911312896 MSK100D-0300-NN-M1-AP0-NNNN is suitable for applications where the servo axis must handle high torque, precise motion, and repeated industrial duty cycles. It can be used both as a replacement motor and as part of a machine retrofit project, provided that the drive system, cables, mechanical interface, and encoder configuration are compatible.
| Industry |
Typical Application |
| Packaging Machinery |
Main drive axis, rotary station, cutting unit, heavy feed system |
| Printing Machinery |
Roller drive, web handling, synchronized motion axis |
| Machine Tools |
Feed axis, rotary table, automatic tool or workpiece handling |
| Plastics Machinery |
Extrusion support axis, winding unit, cutting and trimming mechanism |
| Metal Forming Equipment |
Positioning axis, feed system, press auxiliary movement |
| Material Handling |
Conveyor drive, transfer unit, gantry or indexing system |
| Converting Machinery |
Slitting, laminating, winding, and tension-related control |
| General Automation |
Heavy-duty servo replacement and machine modernization |
Installation and Compatibility Notes
When replacing an existing Rexroth motor, it is important to verify the complete order number and type code. A similar-looking MSK100D motor may not be interchangeable if the encoder, brake, shaft, or connection configuration is different. The order number R911312896 and the model MSK100D-0300-NN-M1-AP0-NNNN should be checked against the original motor nameplate and machine documentation.
| Compatibility Check |
Why It Matters |
| Order Number R911312896 |
Confirms the exact Rexroth material reference |
| Full Type Code |
Prevents encoder, brake, shaft, or configuration mismatch |
| Encoder Type |
Must match the servo drive feedback interface and parameters |
| Brake Configuration |
This model has no holding brake |
| Shaft Type |
Keyway shaft must match the coupling or mechanical transmission |
| Drive Controller |
Must be compatible with the motor data and parameter set |
| Cable Set |
Power and encoder cables must match the motor connection system |
| Machine Axis Design |
Load direction and safety requirements must be reviewed |
Procurement and Quality Inspection Guidance
For industrial spare-parts purchasing, this motor should be identified by both the Rexroth order number R911312896 and the full model code MSK100D-0300-NN-M1-AP0-NNNN. If purchasing a used or refurbished unit, the supplier should confirm testing status, encoder feedback condition, shaft condition, bearing condition, insulation resistance, connector condition, and packaging protection.
| Inspection Item |
Recommended Check |
| Nameplate |
Must match R911312896 and MSK100D-0300-NN-M1-AP0-NNNN |
| Shaft and Keyway |
Check for wear, impact marks, corrosion, or deformation |
| Encoder Feedback |
Confirm encoder signal and compatibility with the drive |
| Bearings |
Check noise, rotation smoothness, and mechanical play |
| Insulation |
Test insulation resistance before installation |
| Connectors |
Inspect pins, threads, seals, and cable interface |
| Housing |
Check for cracks, heavy dents, or repainting over damage |
| Packing |
Use shaft protection and shock-resistant export packaging |
SEO-Oriented Product Summary
The REXROTH R911312896 MSK100D-0300-NN-M1-AP0-NNNN synchronous servo motor is a high-torque IndraDyn S motor for demanding industrial automation and motion-control systems. It features a MSK100D frame, 0300 winding, natural convection cooling, multiturn absolute encoder, shaft with keyway, no holding brake, IP65 protection, and an approximate net product weight of 56.0 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, converting systems, material handling equipment, and other high-load servo applications. For accurate replacement, the buyer should confirm both the order number R911312896 and the full model code MSK100D-0300-NN-M1-AP0-NNNN before purchase.
