Mitsubishi M80 Spindle Motor 200V SJ-D18.5/80-01

SJ-D18.5/80-01 is a Mitsubishi Electric SJ-D series AC spindle motor used in CNC machine tools to drive the main spindle (cutting tool rotation).

This is a very high-power spindle motor class in the SJ-D family.

🔧 Key specifications (SJ-D18.5/80-01)

⚙️ What it is used for

This motor drives CNC spindles for:

• heavy-duty milling
• large material removal
• high torque cutting at low speeds
• industrial production machining

It is used in:

• large machining centers
• heavy CNC milling machines
• industrial high-load spindle systems

🧠 Code breakdown

• SJ-D → spindle motor series
• 18.5 → rated output (18.5 kW)
• /80 → compact high-torque frame design
• -01 → mechanical/electrical revision

📐 Typical characteristics

• One of the highest torque-density SJ-D spindle motors
• Optimized for heavy cutting rather than high-speed finishing
• Strong low-speed torque stability
• Rigid rotor design for vibration resistance under load
• Used with CNC spindle assemblies (belt-driven or direct-coupled depending on machine design)

⚠️ Important notes

• Not a servo motor (no positioning control role)
• Not a linear motor
• Requires Mitsubishi spindle drive system (typically MDS series or equivalent)
• Cooling and bearing lubrication are critical due to high thermal load

🧠 Simple explanation

SJ-D18.5/80-01 is an 18.5 kW CNC spindle motor designed for very heavy cutting operations, delivering high torque in a compact frame for industrial machining.