Description
The Mitsubishi SJ-4-V11-18T is a 11 kW AC spindle motor from the Mitsubishi Electric SJ-4-V series, used in CNC machine tool spindle applications (milling and turning centers).
Key Specifications (SJ-4-V11-18T)
| Specification | Value |
|---|---|
| Series | SJ-4-V Series |
| Motor Type | AC Spindle Motor |
| Rated Output | 7.5 kW (continuous) |
| Short-Time Output | 11 kW (30-minute rating) |
| Acceleration Output | 11 kW (standard), up to 13.2 kW peak |
| Base Speed | 1500 rpm |
| Maximum Speed | 6000 rpm |
| Continuous Rated Torque | 47.7 N·m |
| Rated Current | 23 A |
| Frame Size | B112 |
| Flange Size | 204 SQ |
| Inertia | 0.03 kg·m² |
| Protection Class | IP44 |
| Voltage | 3-phase 400V |
| Compatible Drive | Mitsubishi MDS-D / MDS-DH spindle amplifiers |
📌 Source: Mitsubishi Electric SJ-4-V series spindle motor specification data (MDS-D/DH Series Specifications Manual) /
Features
- Designed for CNC spindle operation (not servo axis motor)
- High short-time power (11 kW) for heavy cutting loads
- Strong torque output for stable machining performance
- Built-in encoder feedback for precise spindle control
- Suitable for medium–large CNC machine tools
- Reliable operation under continuous industrial duty
Typical Applications
- CNC milling machines (main spindle)
- CNC turning centers (lathe spindle)
- Heavy machining centers
- Metal cutting and forming equipment
- Industrial CNC production systems