Description
The Mitsubishi SJ-4-V22-15T is a 400V AC spindle motor from the SJ-4-V series, designed for CNC machine tool spindle applications such as milling and turning centers.
Key Specifications (SJ-4-V22-15T)
| Specification | Value |
|---|---|
| Series | SJ-4-V Series |
| Motor Type | AC Spindle Motor |
| Rated Output | 18.5 kW (continuous rating) |
| Short-Time Output | 22 kW (30-minute rating) |
| Acceleration Output | 22 kW standard, ~26.4 kW peak |
| Continuous Torque | 118 N·m |
| Rated Current | 46 A |
| Base Speed | 1500 rpm |
| Maximum Speed | 6000 rpm |
| Frame Size | B160 |
| Shaft Diameter | 55 mm |
| Flange Size | 250 SQ |
| Inertia | 0.08 kg·m² |
| Protection Class | IP44 |
| Cooling | Self-cooled |
| Drive Compatibility | Mitsubishi MDS-D / MDS-DH spindle amplifiers |
📌 Source: Mitsubishi Electric SJ-4-V series specification tables (MDS-D/DH2 & MDS-E/EH manuals)
Features
- Designed for CNC spindle operation (not servo axis motor)
- High power output (18.5 kW class) for heavy machining
- Strong torque (118 N·m) for stable cutting performance
- High-speed capability up to 6000 rpm
- Built-in encoder feedback for precise spindle control
- Heavy-duty B160 frame for large machine tools
Typical Applications
- Large CNC milling machines (main spindle)
- CNC turning centers (lathe spindle)
- Heavy-duty machining centers
- Metal cutting and forming equipment
- Industrial CNC production systems