Description

Product Overview

The MSK050C-0300-NN-M1-UG1-NNNN is a Bosch Rexroth IndraDyn S synchronous servo motor designed for precise, closed-loop motion control. It belongs to the MSK series, with size 050, length C, and a 0300 winding configuration. The motor uses natural-convection cooling and incorporates a multiturn absolute optical encoder with Hiperface interface, providing feedback for accurate position and speed control. A built-in electrically released holding brake provides 6 Nm of braking torque for applications requiring load retention during power-off conditions. The motor delivers 5.5 Nm continuous torque at 100 K standstill and up to 15 Nm maximum torque. Its compact MSK construction makes it suitable for machine tools, handling equipment, packaging machinery, robotics, and other automated systems where controlled acceleration and repeatable positioning are required.

Technical Specifications — MSK050C-0300-NN-M1-UG1-NNNN

The Bosch Rexroth project-planning documentation specifies 5.0 Nm continuous standstill torque at 60 K, 5.5 Nm at 100 K, 15 Nm maximum torque, 4,700 rpm maximum speed, and IP65 protection for the MSK050C-0300-NN motor configuration.

Rexroth MSK050C-0300-NN-M1-UG1-NNNN

Key Features and Benefits — MSK050C-0300-NN-M1-UG1-NNNN

• Synchronous servo design for closed-loop industrial motion control.
• Multiturn absolute optical encoder with Hiperface communication.
• 5.5 Nm continuous standstill torque at the 100 K temperature rise rating.
• 15 Nm maximum torque for dynamic acceleration and positioning.
• Integrated 6 Nm electrically released holding brake.
• Natural-convection cooling with no auxiliary fan.
• IP65 protection for industrial machine environments.
• Rotatable motor connector simplifies cable routing in confined installations.

The encoder and brake configuration are particularly important when selecting a replacement. A motor from the same MSK family can have different feedback, shaft, winding, or brake options, so the complete type code should be matched rather than selecting by frame size alone.

Related Models

MSK050C-0300-NN: Base MSK050C motor configuration with the 0300 winding, providing 5.5 Nm continuous torque at 100 K and 15 Nm maximum torque.

R911309706: Bosch Rexroth reference associated with this complete motor type code.

MSK050C-0450-NN: Related MSK050C winding configuration with different electrical and torque characteristics.

MSK050C-0600-NN: Another MSK050C winding variant intended for a different drive and application configuration.

Installation and Maintenance — MSK050C-0300-NN-M1-UG1-NNNN

Before installation, verify the motor type code, drive compatibility, encoder interface, feedback configuration, shaft dimensions, brake voltage, and motor parameters. The Hiperface multiturn encoder must be correctly recognized by the associated Rexroth drive.

During maintenance, inspect the motor connector, encoder cable, shaft seal, mounting flange, and brake operation. Check for abnormal bearing noise, excessive vibration, overheating, or mechanical play. Do not apply unauthorized voltage to the holding brake; follow the drive manufacturer’s electrical specifications.

Personally, I would compare the complete nameplate code and encoder configuration before approving a replacement. For servo motors, a similar-looking unit with a different feedback option can create immediate commissioning problems.

Product Warranty — MSK050C-0300-NN-M1-UG1-NNNN

Warranty coverage should be confirmed with the supplier according to the actual supplied condition, such as new surplus, refurbished, or tested-used. For critical servo-motor spares, procurement records should include the complete type code, serial number, encoder configuration, brake specification, inspection status, and applicable warranty period.

When sourcing the Rexroth MSK050C-0300-NN-M1-UG1-NNNN, verify the complete motor code and associated IndraDrive configuration before purchase.