Description
The Mitsubishi SJ-4-V3.7-03T is a 400V AC spindle motor from the Mitsubishi Electric SJ-4-V series, used in CNC machine tool spindle applications such as milling and turning centers.
Key Specifications (SJ-4-V3.7-03T)
| Specification | Value |
|---|---|
| Series | SJ-4-V Series |
| Motor Type | AC Spindle Motor |
| Rated Output | 3.7 kW (15-minute rating) |
| Continuous Output | 2.2 kW |
| Base Speed | ~1500 rpm |
| Maximum Speed | up to 10,000 rpm |
| Rated Torque | ~14 Nm |
| Frame Size | 174 SQ |
| Flange Diameter | 150 mm |
| Shaft Diameter | 28 mm |
| Mass | ~30 kg |
| Protection Class | IP44 |
| Encoder | Absolute encoder (machine-tool feedback type) |
| Cooling | Self-cooled / fan-assisted (system dependent) |
| Drive Compatibility | Mitsubishi MDS-D / MDS-DH spindle drives |
š Source: Mitsubishi CNC spindle motor specification tables (SJ-4-V series)
Features
- Designed specifically for CNC spindle rotation (not axis servo use)
- 3.7 kW short-time power for machining load peaks
- Stable torque delivery for cutting operations
- High-speed capability up to 10,000 rpm
- Integrated encoder feedback for precise spindle control
- Compact industrial frame for CNC machine integration
Typical Applications
- CNC milling machines (main spindle)
- CNC turning centers (lathe spindle)
- Metal cutting and machining centers
- Industrial machine tool spindles
- General-purpose CNC manufacturing systems