Breaking Down the Type Code for Bosch Rexroth MSK Servo Motors

Bosch Rexroth's MSK IndraDyn S synchronous servo motors are known for their high torque density, precision, and robust design – making them popular in industrial automation for applications ranging from packaging and material handling to machine tools and robotics. Each MSK motor is identified by a detailed type code that specifies its exact configuration and options. Understanding these type codes is critical for engineers and technicians when selecting a replacement or spare, since you cannot swap an MSK motor with just any other MSK model – you must match the exact code to ensure compatibility. In this post, we will break down the type codes for three example MSK motors – MSK040C-0600-NN-M1-UP0-NNNN, MSK061C-0600-NN-M1-UG1-NNNN, and finally the MSK076C-0300-NN-M1-UP1-NNNN. Wake Industrial specializes in MSK motor refurbishment and replacement. For general type code and fault questions be sure to utilize our free chat tool.

 If you need to repair or replace your MSK, contact Wake Industrial today at 1-919-443-0207 or sales@wakeindustrial.com to speak with a sales representative. No automated responses, no hassles, just quick, fair quotes from a real human.

MSK040C-0600-NN-M1-UP0-NNNN: Decoding the Motor Type Code

Key Specs & Features: The MSK040C-0600-NN-M1-UP0-NNNN is a compact yet powerful servo motor. Being a size 040, it is physically much smaller and lighter (around 3.6 kg in weight) than the 076C, but thanks to the 0600 winding and C-length stack, it can achieve high speeds and decent torque. This motor can deliver about 3.1 Nm of continuous torque at standstill (100 K thermal rise) and up to 8.1 Nm of peak torque for short bursts. Its continuous current is ~4.7 A, with a peak current around 12.4 A. The maximum speed of 7,500 RPM allows it to drive fast-moving machinery. Notably, this particular model has no brake (UP0), which is common for applications like conveyor belts, high-speed indexing tables, or robot arm joints where gravity or safety considerations don’t demand a holding brake. The IP65 protection, robust construction, and precision encoder still apply, making the MSK040C suitable for harsh industrial conditions and accurate motion control. Typical uses for an MSK040C servo include packaging machines, small robotics, or material handling systems where its compact size and high speed are advantageous. When replacing this motor, one must obtain the exact MSK040C-0600-NN-M1-UP0-NNNN to match the winding and features – using any other MSK040 variant (say, with a different winding or a brake) could result in mismatched performance or incompatibility with the drive parameters.

First let’s examine the MSK040C-0600-NN-M1-UP0-NNNN, which is a smaller MSK series motor. Breaking down its type code reveals the following

The MSK061C-0600-NN-M1-UG1-NNNN Type Code

Key Specs & Features: The MSK061C-0600-NN-M1-UG1-NNNN can be seen as a “middle child” between our 040 and 076 examples. It offers about 9.0 Nm continuous torque at standstill (100 K) and up to 32.0 Nm peak torque. Its maximum speed with the 0600 winding is around 6,000 RPM. These specs make it a versatile servo suitable for a wide range of tasks – from robotics and handling systems to machine tool feed axes and printing machines. The motor’s frame size and C-length give it a moderate inertia and weight (several kilograms, falling between the light 3.6 kg 040 and the heavy 15 kg 076 – typically the 061C might weigh on the order of ~8–10 kg). Like the other MSKs, it features an IP65 sealed housing (dust and splash-proof), and high-quality construction for reliability in industrial environments. The plain (smooth) shaft on this model might be preferred in applications where precision alignment is needed (e.g. direct coupling to a gearbox or ball screw) and the coupling method doesn’t require a key. With the integrated brake (UG1), this servo is often found in applications where holding the load is critical, such as Z-axes on machines or any axis that back-drives due to gravity or external forces. In summary, the MSK061C-0600-UG1 offers a blend of speed and torque suitable for mid-range motion control tasks, and its type code ensures you know it has the brake and plain shaft needed for such duties.

The MSK061C-0600-NN-M1-UG1-NNNN, represents a mid-sized MSK motor. Its type code can be interpreted as follows:

MSK076C-0300-NN-M1-UP1-NNNN: Interpreting The Type Code

Key Specs & Features: The MSK076C-0300-NN-M1-UP1-NNNN is a high-torque, medium-speed servo motor in the MSK range. With its size 076 frame and 0300 winding, it delivers roughly 12 Nm continuous torque at standstill (100 K thermal rise) and up to 43.5 Nm peak torque for short durations. The maximum speed is around 4700 RPM for this winding. This model’s integrated holding brake and keyed shaft make it well-suited for applications where the load must be held securely at rest – for example, vertical axes or machine tool spindle orientations that require braking when power is removed. The motor’s rotatable connectors (U) and IP65-rated housing allow flexible installation in industrial environments, and its natural convection cooling means no external cooling infrastructure is needed (though one must ensure adequate airflow around the motor). At approximately 15 kg in weight, the MSK076C is the largest of our three examples – a heavy-duty servomotor used in demanding tasks like large robotics, printing presses, or CNC machine axes where high torque is required with precision positioning.

The MSK076C-0300-NN-M1-UP1-NNNN is a larger IndraDyn S servo motor from Bosch Rexroth. Let’s break down each part of this code and what it signifies:

Purchasing and Repair Options

Wake Industrial focuses on minimizing downtime for businesses affected by MSK issues. Our Indramat experts prioritize rapid recovery, providing a large inventory of MSK models, a one-year warranty, and expedited shipping at no additional cost. To find out how Wake Industrial can solve your MSK issues, call 1-919-443-0207 or fill out the quote form at the top of this page to receive a quote NOW.

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Be sure to read our blog on common MSK Fault Codes for more MSK help. And for general type code and fault questions use our free chat tool!