Description
The Mitsubishi SJ-4-V22-18ZT is a high-power AC spindle motor (11 kW class) from Mitsubishi Electric’s SJ-4-V series, used in CNC machine tool spindle applications such as milling and turning centers.
Key Specifications (SJ-4-V22-18ZT)
| Specification | Value |
|---|---|
| Series | SJ-4-V Series |
| Motor Type | AC Spindle Motor |
| Rated Output | 11 kW (continuous rating) |
| Short-Time Output | 15 kW (30-minute rating) |
| Acceleration Output | 15 kW standard, ~18 kW peak (system dependent) |
| Continuous Torque | 70.0 N·m |
| Rated Current | 44 A |
| Base Speed | 1500 rpm |
| Maximum Speed | 8000 rpm |
| Frame Size | A160 |
| Flange Size | 250 SQ |
| Inertia | 0.0575 kg·m² |
| Protection Class | IP44 |
| Encoder | Absolute encoder (machine-tool feedback type) |
| Cooling | Self-cooled |
| Drive Compatibility | Mitsubishi MDS-D / MDS-DH spindle amplifiers |
📌 Sources: Mitsubishi Electric SJ-4-V series spindle motor specification tables
Features
- Designed specifically for CNC spindle drive (not servo axis motor)
- High continuous power (11 kW class) for heavy machining
- Strong torque output for stable cutting performance
- High-speed capability up to 8000 rpm
- Built-in encoder feedback for precise spindle control
- Heavy-duty A160 frame for machine tool integration
Typical Applications
- CNC milling machines (main spindle)
- CNC turning centers (lathe spindle)
- Heavy machining centers
- Metal cutting and forming machines
- Industrial CNC production equipment