Description
Product Introduction & Engineering Value
A servo motor failure in a production machine rarely happens at a convenient time. The MSK040C-0600-NN-M1-UG1-NNNN is designed for motion systems where controlled acceleration, positioning accuracy, and predictable replacement compatibility matter. This motor belongs to the Rexroth IndraDyn S MSK family, built for integration with IndraDrive servo controllers.
For maintenance teams managing legacy automation equipment, matching the complete type code is critical. Encoder type, brake configuration, winding, and mechanical options must align with the original installation to avoid commissioning problems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bosch Rexroth |
| Product Family | IndraDyn S MSK Series |
| Motor Type | Permanent magnet synchronous servo motor |
| Frame Size | MSK040C |
| Winding Code | 0600 |
| Maximum Speed | 7,500 rpm |
| Maximum Torque | 8.1 Nm |
| Peak Current | 12.4 A |
| Continuous Torque (60K) | 2.7 Nm |
| Cooling Method | Natural convection |
| Feedback Device | M1 optical multiturn absolute Hiperface encoder |
| Holding Brake | UG1 electrically released brake |
| Protection Class | IP65 motor housing |
| Shaft Design | Smooth shaft with shaft seal ring |
Specifications are based on published MSK040C-0600-NN-M1-UG1-NNNN technical references and catalog data.
Field Application & The “Trench” Experience
A packaging equipment manufacturer experienced intermittent axis faults on a high-speed indexing station. The original servo motor had exceeded its service life after years of continuous operation. The engineering team initially considered a lower-cost substitute, but the machine OEM documentation required the exact MSK040C configuration because the controller stored motor-specific feedback parameters.
The replacement MSK040C-0600-NN-M1-UG1-NNNN was installed, encoder identification completed, and the holding brake function was verified before returning the axis to production.
Typical applications include:
- High-speed indexing axes in automated packaging machines
- Precision feed axes on CNC processing equipment
- Material handling robots requiring brake-controlled vertical positioning
- Semiconductor or electronics assembly positioning stages

MSK040C-0600-NN-M1-UG1-NNNN

MSK040C-0600-NN-M1-UG1-NNNN
Transparency SOP: QA & Testing
Every MSK040C-0600-NN-M1-UG1-NNNN unit should go through controlled inspection before being released for industrial service.
Inspection process:
- Visual examination
- Check housing condition, connectors, shaft condition, and nameplate accuracy.
- Verify the complete type code matches R911306061 configuration.
- Electrical testing
- Measure winding resistance and insulation condition.
- Confirm encoder communication where test equipment is available.
- Operational verification
- Rotate the shaft manually for mechanical abnormalities.
- Test brake engagement and release operation.
- Verify servo feedback response.
For New Surplus inventory, authenticity checks focus on OEM labeling, storage condition, and traceability. Refurbished units require additional functional testing before shipment.
Veteran’s Tech Trap Guide
⚠️ Trap 1: Ignoring the encoder configuration
The M1 feedback option is not interchangeable with every MSK motor variant. Replacing it with a different encoder version can create drive initialization faults or require parameter changes.
PRO TIP: Always compare the full motor type code, not only “MSK040C-0600.”
⚠️ Trap 2: Forgetting the holding brake
The UG1 option includes an electrically released holding brake. A machine designed for vertical loads may lose position protection if the brake wiring or control logic is incorrect.
⚠️ Trap 3: Incorrect motor parameter download
Rexroth servo systems depend heavily on motor identification data. Loading parameters from a similar-looking motor can result in incorrect current limits, torque behavior, or alarm conditions.
Dynamic FAQ
Q1. Is MSK040C-0600-NN-M1-UG1-NNNN an original Bosch Rexroth motor?
Yes. This type code identifies a Bosch Rexroth IndraDyn S MSK synchronous servo motor. The associated material number is R911306061.
Q2. What is the difference between UG0 and UG1 versions?
The UG1 version includes an integrated electrically released holding brake, while UG0 is the version without the holding brake.
Q3. Can this motor directly replace another MSK040C motor?
Only if the complete type code matches application requirements. Encoder type, brake option, winding, and mechanical configuration must be checked before replacement.
Q4. Does the motor require external cooling?
No. The MSK040C-0600-NN-M1-UG1-NNNN uses natural convection cooling under its standard configuration.
Q5. What warranty is normally provided for New Surplus or refurbished stock?
Warranty terms depend on supplier inspection procedures and sales conditions. Industrial buyers should request serial traceability, testing records, and warranty coverage before purchase.
Q6. What controller families are commonly paired with this motor?
This motor is typically integrated with Bosch Rexroth IndraDrive servo systems designed for MSK series synchronous motors.




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