Description
SJ-DJ11/100-01 is a Mitsubishi Electric SJ-DJ series compact & lightweight CNC spindle motor designed for medium-to-heavy machining applications requiring fast spindle response and compact motor construction.
The SJ-DJ family is Mitsubishi’s lightweight spindle motor series optimized for compact machining centers with reduced inertia and improved acceleration characteristics. (mitsubishielectric.com)
🔧 Key specifications (SJ-DJ11/100-01)
| Parameter | Value |
|---|---|
| Series | SJ-DJ |
| Type | Compact & lightweight AC spindle motor |
| Continuous rated output | 7.5 kW |
| Short-time rated output | 11 kW (25% ED) |
| Standard accel/decel output | 11 kW |
| Actual accel/decel output | 13.2 kW |
| Base speed | 1500 rpm |
| Maximum speed | 10,000 rpm |
| Continuous rated torque | 47.7 N·m |
| Frame number | B112 |
| Shaft diameter | Ø48 mm |
| Flange fitting diameter | Ø180 mm |
| Approx. mass | ~61 kg |
| Protection class | IP54 (shaft excluded) |
| Compatible spindle drive | MDS-DJ-SP-200 / MDS-EJ-SP-200 |
These values are listed in Mitsubishi’s official MDS-DJ / MDS-EJ spindle system specification manuals. (mitsubishielectric-cnc.com)
⚙️ What makes the SJ-DJ series different
Standard SJ-D
- Heavier conventional spindle motor
- Higher structural rigidity
- General-purpose machining applications
SJ-DJ
- Compact and lightweight construction
- Lower rotor inertia
- Faster acceleration/deceleration
- Reduced machine weight
- Better suited for compact machining centers
Mitsubishi officially identifies SJ-DJ as a “Compact & lightweight spindle motor” family. (mitsubishielectric.com)
🧠 Code breakdown
| Code part | Meaning |
|---|---|
| SJ-DJ | Compact/lightweight spindle motor series |
| 11 | Power class |
| /100 | 100-frame spindle family |
| -01 | Mechanical/electrical specification revision |
🏭 Typical applications
Used in:
- compact machining centers
- vertical CNC mills
- medium-duty milling systems
- drilling/tapping centers
- production machining lines
📐 Mechanical characteristics
- B112 frame structure
- Precision-balanced rotor
- Lower inertia compared with standard SJ-D motors
- Continuous-duty industrial spindle design
- Optimized for rapid spindle response
⚠️ Important notes
- Not a positioning servo motor
- Not a linear motor
- Requires Mitsubishi spindle drive electronics
- Cooling and bearing maintenance are important at high RPM
- Must be matched with compatible Mitsubishi spindle amplifiers
🧠 Simple explanation
SJ-DJ11/100-01 is a compact and lightweight 11 kW-class CNC spindle motor designed for fast spindle acceleration and medium-to-heavy machining up to 10,000 rpm.