Description
The Mitsubishi SJ-4-V7.5-13ZT is a 7.5 kW AC spindle motor from the Mitsubishi Electric SJ-4-V series, designed for CNC machine tool spindle applications such as milling and turning centers.
Key Specifications (SJ-4-V7.5-13ZT)
| Specification | Value |
|---|---|
| Series | SJ-4-V Series |
| Motor Type | AC Spindle Motor |
| Rated Output | 5.5 kW (continuous) |
| Short-Time Output | 7.5 kW (30-minute rating) |
| Standard Acceleration Output | 7.5 kW |
| Actual Acceleration Output | 9.0 kW |
| Base Speed | 1500 rpm |
| Maximum Speed | 12,000 rpm |
| Rated Torque | 35.0 N·m |
| Continuous Rated Current | 24 A |
| Frame Size | A112 |
| Flange Size | 204 SQ |
| Shaft Diameter | 32 mm |
| Mass | 60 kg |
| Protection Class | IP44 |
| Cooling | Self-cooled (no fan version) |
| Compatible Drive | Mitsubishi MDS-D / MDS-DH spindle amplifiers |
📌 Source: Mitsubishi Electric SJ-4-V series spindle motor specification data (mitsubishielectric.com)
Features
- Designed for CNC spindle operation (not servo axis motor)
- Higher-performance variant in the SJ-4-V 7.5 kW class
- Supports high-speed machining up to 12,000 rpm
- Strong torque for medium–heavy cutting operations
- Improved bearing specification (high-speed type, “13T” variant)
- Integrated encoder feedback for precise spindle control
- Compact 204 SQ frame for CNC machine tool integration
Typical Applications
- CNC milling machines (main spindle)
- CNC turning centers (lathe spindle)
- High-speed machining centers
- Metal cutting and forming machines
- Industrial CNC automation systems