Description
The Mitsubishi SJ-4-V2.2-03T is a 400V AC spindle motor from Mitsubishi Electric’s SJ-4-V series, used mainly in CNC machine tool spindle applications (milling/turning machines).
Key Specifications (SJ-4-V2.2-03T)
| Specification | Value |
|---|---|
| Series | SJ-4-V Series |
| Motor Type | AC Spindle Motor |
| Rated Output | 2.2 kW (15-min rating) |
| Continuous Output | ~1.5 kW |
| Base Speed | 1500 rpm |
| Maximum Speed | 10,000 rpm |
| Rated Torque | ~9.5 N·m |
| Frame Size | A90 class |
| Flange Size | 174 SQ |
| Shaft Diameter | 28 mm |
| Mass | ~25 kg |
| Protection Class | IP44 |
| Insulation Class | Class F |
| Cooling | Self-cooled / fan-assisted depending on setup |
| Compatible Drive | Mitsubishi MDS-D / MDS-DH spindle amplifiers |
📌 Source: Mitsubishi Electric CNC spindle motor specifications (SJ-4-V series)
Features
- Designed for CNC spindle rotation (not axis servo use)
- Supports high-speed machining up to 10,000 rpm
- Good balance of torque and speed for general machining
- Compact A90 frame suitable for machine tool integration
- Works with Mitsubishi spindle drive systems (MDS series)
- Stable performance in intermittent cutting cycles
Typical Applications
- CNC milling machines (main spindle)
- CNC turning centers (lathe spindle)
- General metal cutting machines
- Precision machining equipment
- Industrial CNC automation systems