Description
TM-RBS500J20 is the Mitsubishi Electric TM-RB series secondary-side rotor (magnet ring assembly) for the highest-torque direct-drive motor class. It pairs with TM-RBP500J20 to form a complete CNC rotary direct-drive axis.
š§ Key specifications (TM-RBS500J20)
| Parameter | Value |
|---|---|
| Series | TM-RB |
| Type | Secondary side (rotor / magnet unit) |
| Matching stator | TM-RBP500J20 |
| Rated torque system | 500 NĀ·m class |
| Maximum torque system | ~1250 NĀ·m class |
| Rotor outer diameter | ~Ć260ā300 mm class |
| Rotor inner diameter | Precision H8 fit bore |
| Rotor height | ~100 mm class |
| Mounting | Multiple M6/M8 threaded holes (frame J size) |
| Mass | ~15ā20 kg (approx.) |
| Protection class | IP00 |
| Application | Large CNC rotary tables / heavy-duty 5-axis machines |
āļø What it is
- This is the permanent magnet rotor ring, not a complete motor.
- It generates the magnetic field that interacts with the stator TM-RBP500J20.
- Together they form a very high-torque, gearless direct-drive rotary axis.
ā ļø Handling & installation notes
- Supplied fully magnetized ā extremely strong attraction force
- Requires controlled assembly tooling to prevent:
- sudden magnetic pull-in
- injury risk
- magnet surface damage
- Must maintain a precise air gap with stator (tight CNC tolerance design)
- IP00 design ā must be installed inside a sealed machine enclosure
- Typically requires overhead lifting equipment due to weight
š§ Simple explanation
TM-RBS500J20 is the rotating magnetic core of a 500 NĀ·m class CNC direct-drive motor. It only works as a motor when assembled with TM-RBP500J20.