Mitsubishi M80 Spindle Motor 200V SJ-D7.5/100-01

SJ-D7.5/100-01 is a Mitsubishi Electric SJ-D series AC spindle motor used in CNC machine tools to drive the main spindle (cutting tool rotation).

🔧 Key specifications (SJ-D7.5/100-01)

⚙️ What it is used for

This motor is used to:

• Rotate CNC machine spindles
• Drive cutting tools for:
  • heavy milling
  • drilling
  • tapping
• Provide higher torque for tougher cutting loads

Compared to 3.7 kW and 5.5 kW versions, this is used in heavier machining applications.

🧠 Code breakdown

• SJ-D → spindle motor series
• 7.5 → rated power (7.5 kW)
• /100 → frame / design speed class
• -01 → mechanical/electrical design variant

📐 Typical characteristics

• Larger rotor and stator than lower-power SJ-D models
• Higher torque at mid and low speeds (better for heavy cutting)
• Precision-balanced for vibration stability at high RPM
• Designed for CNC machining centers requiring stronger spindle load capacity
• Integrated into spindle via belt or direct-coupled configurations depending on machine design

⚠️ Important notes

• Not a servo motor (does not control axis position)
• Not a linear motor (no rail/coil system)
• Requires Mitsubishi spindle drive/inverter system
• Proper cooling and bearing maintenance are critical due to higher load class

🧠 Simple explanation

SJ-D7.5/100-01 is a 7.5 kW CNC spindle motor that spins the machine’s cutting tool with higher torque for heavier machining operations.