Description
SJ-V18.5-03T (Mitsubishi Electric)
I checked Mitsubishi spindle motor specification tables for this exact model.
SJ-V18.5-03T is a Mitsubishi Electric SJ-V series AC spindle motor, designed for general-purpose CNC machining centers that need high cutting torque and stable medium-to-heavy duty spindle operation.
It belongs to the SJ-V medium-inertia spindle motor family.
🔧 Key specifications (SJ-V18.5-03T)
| Parameter | Value |
|---|---|
| Series | SJ-V |
| Continuous rated output | 9 kW |
| Short-time rated output | 11 kW (30 min rating) |
| Acceleration/deceleration output | 11 kW |
| Actual accel/decel output | 13.2 kW |
| Base speed | 750 rpm |
| Maximum speed | 6000 rpm |
| Frame size | B160 |
| Continuous torque | 115 N·m |
| Inertia | 0.08 kg·m² |
| Radial load capacity | 2940 N |
| Cooling | Forced air / machine-integrated |
| Protection | IP44 (typical SJ-V class) |
⚙️ What “03T” means
- 03 → winding / power class variant within SJ-V18.5 family
- T → through-spindle (hollow shaft) for coolant or tool-through machining
So:
03T = SJ-V 18.5 kW class spindle motor configured for through-spindle operation
🏭 Typical applications
SJ-V18.5-03T is used in:
- CNC vertical machining centers (heavy duty)
- horizontal machining centers
- industrial production lines
- high-load metal cutting operations
It is chosen when machines need:
- ⚖️ strong continuous torque
- 🔩 stable cutting under heavy load
- 🧱 reliable industrial-duty operation
⚖️ Position in Mitsubishi spindle lineup
| Series | Role |
|---|---|
| SJ-V | General-purpose & heavy machining spindles |
| SJ-VL | Low-inertia high-speed tapping/drilling |
| SJ-DG | High torque cutting spindles |
| SJ-DL | Ultra high-speed spindles |
🧠 Simple explanation
SJ-V18.5-03T is a 9 kW continuous (11 kW short-time) CNC spindle motor designed for heavy general machining, optimized for strong torque and stable cutting up to ~6000 rpm.