Description
SJ-2B4002T (Mitsubishi Electric)
SJ-2B4002T is a Mitsubishi Electric SJ-B series built-in AC spindle motor, used in compact CNC machine tools and small spindle applications. It belongs to the older SJ-2B built-in spindle motor family, typically used for light-duty, low-power machining or auxiliary spindle setups.
š§ Verified model position (official data)
From Mitsubishi SJ-B series specifications:
SJ-2B4002T is listed as a built-in spindle motor with the following characteristics.
āļø Key technical specifications
| Parameter | Value |
|---|---|
| Series | SJ-B (Built-in spindle motor) |
| Model | SJ-2B4002T |
| Continuous rated output | 0.4 kW |
| Short-time rated output | 0.75 kW (15 min) |
| Acceleration/deceleration output | 0.75 kW |
| Actual accel/decel output | 0.9 kW |
| Base speed | 3000 rpm |
| Max speed | 10,000 rpm |
| Drive unit | MDS-D2-SP-20 |
| Cooling | Typically air/liquid depending on machine design |
š§ Model code meaning
| Code part | Meaning |
|---|---|
| SJ | Mitsubishi spindle motor family |
| 2B | SJ-B built-in spindle series (small frame class) |
| 4002 | 0.4 kW class motor variant |
| T | terminal/connector configuration variant |
āļø What this motor is used for
SJ-2B4002T is designed for:
- small CNC machining centers
- light milling / drilling spindles
- auxiliary spindles in multi-spindle machines
- precision low-load cutting
- high-speed light-duty applications
āļø Where it stands in Mitsubishi spindle lineup
| Series | Role |
|---|---|
| SJ-2B | small built-in spindle motors (low power) |
| SJ-BG | modern high-speed built-in spindles |
| SJ-DG | high-torque cutting spindles |
| SJ-DL | external high-speed spindle motors |
š§ Simple explanation
SJ-2B4002T is a small 0.4 kW built-in spindle motor designed for light CNC machining, high-speed rotation, and low cutting load applications.