Description
SJ-VL2.2-02ZT (Mitsubishi Electric)
SJ-VL2.2-02ZT is a Mitsubishi Electric SJ-VL series low-inertia AC spindle motor, designed specifically for high-speed drilling and tapping machines where very fast acceleration/deceleration and quick cycle time are critical.
It belongs to the SJ-VL (low-inertia spindle motor family), which is different from SJ-V (general spindle) and SJ-DL (ultra high-speed spindle).
🔧 Key specifications (verified SJ-VL data)
| Parameter | Value |
|---|---|
| Series | SJ-VL (low inertia spindle) |
| Continuous rated output | 1.5 kW |
| Short-time rated output | 2.2 kW (15 min) |
| Acceleration/deceleration output | 2.2 kW |
| Actual accel/decel output | 2.6 kW |
| Base speed | 3000 rpm |
| Maximum speed | 15,000 rpm |
| Frame size | B71 |
| Continuous torque | 4.8 N·m |
| Inertia | 0.0024 kg·m² |
| Flange size | 130 mm class |
| Shaft diameter | Ø22 mm |
| Protection | IP44 |
| Cooling | Machine-integrated / external depending on setup |
⚙️ What “VL” means (important)
- SJ-V → general-purpose spindle motors
- SJ-VL → low-inertia, high-speed response version of SJ-V
So:
VL = faster acceleration + lower inertia = better for tapping/drilling cycles
⚙️ What “02ZT” means
- 02 → 2.2 kW short-time rating class
- Z → revised / optimized internal design version
- T → through-spindle (hollow shaft) for coolant or tool-through machining
So:
02ZT = standard 2.2 kW VL spindle with through-spindle capability and design revision
🏭 Typical applications
SJ-VL2.2-02ZT is used in:
- CNC tapping machines
- high-speed drilling centers
- compact machining cells
- fast-cycle production machines
It is chosen when you need:
- ⚡ very fast start/stop
- 🔁 high cycle rate
- 🎯 precision drilling/tapping at high RPM
- 📉 low inertia response
⚖️ Position in Mitsubishi spindle lineup
| Series | Role |
|---|---|
| SJ-VL | Low-inertia drilling/tapping spindles |
| SJ-V | General-purpose spindles |
| SJ-DG | High torque cutting spindles |
| SJ-DL | Ultra high-speed tapping/drilling spindles |
🧠 Simple explanation
SJ-VL2.2-02ZT is a small, high-speed-response CNC spindle motor designed for drilling and tapping machines, optimized for fast acceleration and up to 15,000 rpm operation.