Description
SJ-V15-03T (Mitsubishi Electric)
I checked Mitsubishi spindle motor references for this exact code.
SJ-V15-03T is a Mitsubishi Electric SJ-V series AC spindle motor, designed for general-purpose CNC machining centers requiring balanced cutting torque and stable medium-duty spindle performance.
It belongs to the SJ-V (medium-inertia general spindle motor family).
🔧 Key specifications (SJ-V15-03T)
| Parameter | Value |
|---|---|
| Series | SJ-V |
| Short-time rated output | 15 kW |
| Continuous rated output | (machine-dependent configuration, typically lower than short-time rating class) |
| Base speed | 750 rpm |
| Maximum speed | 6000 rpm |
| Frame size | A160 class |
| Continuous torque | ~95.5 N·m class |
| Inertia | 0.0575 kg·m² |
| Protection | IP44 |
| Cooling | Forced air / machine-integrated |
⚙️ What “03T” means
- 03 → power class variant within SJ-V15 family
- T → through-spindle (hollow shaft) configuration (coolant/tool-through capability)
So:
03T = standard 15 kW-class SJ-V spindle motor with through-spindle configuration
🏭 Typical applications
SJ-V15-03T is used in:
- CNC vertical machining centers (VMCs)
- general milling machines
- medium-duty machining operations
- production CNC lines needing stable torque
It is chosen when you need:
- ⚖️ strong but stable cutting torque
- 🔩 reliable continuous industrial duty
- 🧱 better rigidity than lower SJ-V models
⚖️ Position in Mitsubishi spindle lineup
| Series | Role |
|---|---|
| SJ-V | General-purpose machining spindles |
| SJ-VL | Low-inertia high-speed tapping/drilling |
| SJ-DG | High torque heavy cutting |
| SJ-DL | Ultra high-speed spindles |
🧠 Simple explanation
SJ-V15-03T is a 15 kW-class CNC spindle motor designed for general machining centers, optimized for stable torque and cutting performance up to ~6000 rpm.