Mitsubishi's Low-Profile Direct Drive Motor: Direct Control with the Accuracy of a Servo Motor

The TM-RG2M and TM-RU2M are Mitsubishi Electric’s low-profile direct drive motors. These motors allow for the direct control of a load without the use of more traditional mechanical transmission components (gears, belts, chains, etc.). Combining this direct control with the accuracy of a servo motor allows customers to build more compact, efficient, and precise machines. These low-profile motors are a good fit for applications such as index tables, tool changers, and rotary axis for material handling robots.

Key Benefits

• Reduced footprint – Optimize your machine’s center of gravity and stability by minimizing height and weight.
• Hollow shaft – This design feature allows for easy installation of cables and air pipes in the rotating axis.)
• High resolution encoder – Achieve higher productivity with an improved 21 (002C30)/22-bit encoder that reaches 2097152/4194304 pulses per revolution.
• Increased torque with alternate amplifier – By selecting a servo amplifier one class higher for the Low-Profile Direct Drive Motor, the rated torque and maximum torque are increased even further. This option is available for the 004 size.
• Reduced system wear/maintenance – By eliminating mechanical components prone to wear and directly driving the load, the Low-Profile Direct Drive Motor removes the need to perform maintenance or monitor for wear over time.
• Two installation methods – Pilot and table mounting surface types allow for flexible mounting options

Outstanding Performance in a Low-Profile Solution

• Improved speed – The TM-RG2M and TM-RU2M models have a rated speed of 300 rotations per minute, boosting machine productivity.
• Compatibility with larger-capacity servo amplifiers – The 004 sized motor is compatible with larger-capacity amplifiers such as the MR-J4-40B(-RJ) amplifier. Utilizing this option increases rated torque from 4.5 N to 6 N·m, and maximum torque from 13.5 to 18 N·m. This is the ideal solution for heavy loads that require higher torques.
• First-class positioning accuracy – The Low-Profile Direct Drive Motor is capable of being operated as an incremental or absolute positioning device in either an open or closed loop, allowing for extremely precise positioning accuracy.
• Reduced size and weight – Compared to standard direct drive motors, the Low-Profile Direct Drive Motor offers a significant reduction in size. This makes it ideal for customers with tight space restrictions who need a stiff and accurate drive solution.

• Semiconductor / LCD – Coating and vapor deposition systems
• Machine Tool – Index tables and tool changers
• Material Handling Robots – Rotary axis for material handling robots
• Inspection – Rotary axis on XYѲ inspection positioning systems