The REXROTH R911312762 MSK100D-0300-NN-M1-BP2-NNNN is a high-performance synchronous servo motor from the Rexroth MSK series, designed for demanding motion-control applications where high torque density, accurate positioning, and stable dynamic response are required. As part of the IndraDyn S motor family, this model is commonly used with Rexroth IndraDrive systems in industrial automation equipment, production machinery, converting lines, packaging machines, printing equipment, handling systems, and high-load axis control applications.
This motor belongs to the MSK100D frame size and uses the 0300 winding variant, which is suitable for applications requiring strong torque output with a maximum speed of 3000 rpm. According to Rexroth MSK100D technical data, the MSK100D-0300-NN version 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 listed motor mass is 56.0 kg without holding brake and 59.5 kg with holding brake; for this complete type code with the BP2 brake configuration, the practical product weight should be treated as approximately 59.5 kg.
Basic Product Information
| Item | Description |
|---|---|
| Brand | REXROTH |
| Product Type | Synchronous Servo Motor |
| Product Series | MSK / IndraDyn S |
| Order Number | R911312762 |
| Full Model | MSK100D-0300-NN-M1-BP2-NNNN |
| Frame Size | MSK100D |
| Winding Code | 0300 |
| Cooling Type | Natural Convection |
| Encoder Type | Multiturn Absolute Encoder |
| Shaft / Brake Configuration | BP2 Configuration With Holding Brake |
| Product Net Weight | 59.5 kg With Holding Brake |
| Protection Rating | IP65 |
| Insulation Class | F |
| Maximum Speed | 3000 rpm |
Technical Characteristics
The R911312762 MSK100D-0300-NN-M1-BP2-NNNN is built for servo axes that require both mechanical strength and precise electrical control. The MSK100D frame is larger and heavier than many compact servo motors, making it suitable for machines where higher inertia loads, larger drive mechanisms, and stronger acceleration forces are involved. With a maximum torque rating of 187.0 Nm, this motor can support applications that require high peak torque during acceleration, deceleration, positioning correction, or short overload cycles.
| 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 |
| Rotor Moment of Inertia Without Brake | 0.03500 kg·m² |
| Thermal Time Constant | 90.0 min |
| Sound Pressure Level | Less Than 75 dB(A) |
| Operating Ambient Temperature | 0 to 40 °C |
| Degree of Protection | IP65 |
| Insulation Class | F |
Product Weight and Installation Considerations
The weight of the REXROTH R911312762 MSK100D-0300-NN-M1-BP2-NNNN is an important factor for machine design, installation planning, transportation, and spare-parts handling. The technical data for the MSK100D lists a motor mass of 56.0 kg without brake and 59.5 kg with holding brake. Because this complete model includes the BP2 brake configuration, the recommended listing weight for this product is approximately 59.5 kg.
| Weight Item | Approximate Value |
|---|---|
| Motor Weight Without Holding Brake | 56.0 kg |
| Motor Weight With Holding Brake | 59.5 kg |
| Recommended Product Listing Weight | 59.5 kg |
| Packing Weight | Should Be Confirmed Based on Supplier Packaging |
For logistics, the packing weight should not be assumed to be equal to the net motor weight. Wooden case packaging, protective foam, shaft protection, moisture-proof wrapping, and export pallet structure may significantly increase the final shipping weight. For international B2B supply, it is better to list the motor weight separately from the packing weight and confirm the final gross weight before shipping.
Encoder and Motion-Control Performance
The M1 section in the type code indicates a multiturn absolute encoder configuration. This is valuable for applications where the machine needs to retain position information after power-off or emergency stop events. In automated production lines, a multiturn absolute encoder can reduce homing time, improve repeatability, and support more reliable restart behavior after maintenance or power interruption.
This servo motor is suitable for controlled motion axes where position, speed, and torque must be regulated with high accuracy. Typical application scenarios include rotary indexing axes, feed axes, cutting and forming machines, lifting mechanisms, synchronized conveyor systems, robotic auxiliary axes, printing rollers, and packaging machinery. When paired with the correct Rexroth drive and motor cable set, the motor can provide stable feedback, accurate commutation, and strong dynamic performance.
Mechanical and Environmental Reliability
The MSK100D-0300-NN-M1-BP2-NNNN is designed for industrial environments where dust, oil mist, vibration, and frequent duty cycles may be present. The IP65 protection rating makes it suitable for many machine-mounted applications, provided that the connectors, cables, seals, and installation conditions are also correctly selected. The motor’s insulation class F supports reliable operation under appropriate thermal conditions.
| Application Factor | Practical Meaning |
|---|---|
| IP65 Protection | Helps protect against dust and low-pressure water jets under proper installation |
| Natural Cooling | No liquid cooling connection required for standard NN configuration |
| Holding Brake | Helps hold the axis position when the drive is disabled |
| High Peak Torque | Useful for acceleration, braking, and intermittent high-load cycles |
| Multiturn Encoder | Supports absolute position feedback over multiple revolutions |
| Large Frame Size | Suitable for heavier machinery and high-load servo axes |
The holding brake should be understood as a holding device, not as a dynamic service brake for repeated stopping under load. For vertical axes, safety-related loads, or applications involving suspended masses, the complete machine design must include suitable safety measures, braking logic, and mechanical risk assessment.
Application Fields
The REXROTH R911312762 MSK100D-0300-NN-M1-BP2-NNNN can be used in a wide range of industrial automation systems. Its combination of high torque, absolute feedback, brake configuration, and robust enclosure makes it suitable for both OEM equipment and replacement/maintenance projects.
| Industry | Typical Use |
|---|---|
| Packaging Machinery | Main drive axis, sealing axis, rotary indexing axis |
| Printing Machinery | Roller control, web tension control, synchronized feed axis |
| Metalworking Machinery | Feed axis, positioning axis, loading mechanism |
| Plastics Machinery | Extrusion auxiliary drive, cutting unit, winding axis |
| Handling Systems | Lifting, transfer, positioning, gantry movement |
| Assembly Equipment | Servo pressing, rotary tables, automatic stations |
| Converting Machinery | Slitting, winding, laminating, synchronized motion control |
Purchasing and Replacement Notes
When purchasing this motor, the complete order number and full type code should be checked carefully. For Rexroth MSK motors, small differences in encoder type, shaft design, brake option, connector direction, sealing, and winding code can affect compatibility. The safest identification method is to confirm both the order number R911312762 and the full model MSK100D-0300-NN-M1-BP2-NNNN from the motor nameplate or original machine documentation.
| Checkpoint | Why It Matters |
|---|---|
| Order Number R911312762 | Confirms the exact Rexroth material configuration |
| Full Type Code | Prevents mismatch in encoder, brake, shaft, and connector options |
| Drive Compatibility | Must match the Rexroth drive parameter set and motor data |
| Cable and Connector Type | Affects installation and commissioning |
| Brake Option | Important for vertical or holding-load applications |
| Mechanical Mounting | Must match flange, shaft, and coupling requirements |
| Condition | New, refurbished, or used condition affects warranty and service life |
SEO-Friendly Product Summary
The REXROTH R911312762 MSK100D-0300-NN-M1-BP2-NNNN synchronous servo motor is a high-torque industrial motion-control motor for demanding automation systems. With a maximum speed of 3000 rpm, 187.0 Nm maximum torque, multiturn absolute encoder, holding brake configuration, IP65 protection, and an approximate motor weight of 59.5 kg with brake, it is suitable for packaging machines, printing systems, handling equipment, metalworking machinery, plastics processing lines, and other servo-driven production equipment. This model is a strong option for users who require a reliable Rexroth MSK100D servo motor for replacement, machine maintenance, or high-performance industrial automation projects.
