Mitsubishi M80 Low-inertia specifications Motor SJ-VL18.5-05FZT

SJ-VL18.5-05FZT (Mitsubishi Electric)

SJ-VL18.5-05FZT is a Mitsubishi Electric SJ-VL series low-inertia AC spindle motor, designed for high-speed drilling and tapping CNC machines where fast acceleration, low inertia, and short cycle time are critical.

This model is part of the VL high-response spindle family, positioned above small VL units and used in medium-power tapping/drilling machines.

🔧 Key specifications (Mitsubishi VL spindle data)

From Mitsubishi spindle specification tables: (dl.mitsubishielectric.com)

⚙️ What “05FZT” means

• 05 → 5.5 kW short-time rating class
• FZ → internal design / winding revision variant
• T → through-spindle (coolant / tool-through capability)

So:

05FZT = 5.5 kW VL spindle motor with through-spindle capability and revised design

⚙️ Important insight (why this model is special)

Even though the motor is 2.2 kW continuous, it can deliver:

• ⚡ 18.5 kW accel/decel output (standard spindle peak capability)
• ⚡ 22.2 kW actual transient output (drive-dependent peak)

This is what makes VL motors ideal for:

• very fast cycle tapping
• high-speed tool changes
• rapid start/stop machining

🏭 Typical applications

SJ-VL18.5-05FZT is used in:

• CNC tapping machines
• high-speed drilling centers
• compact machining cells
• automated mass-production equipment

It is optimized for:

• 🔁 very fast cycle time
• ⚡ high acceleration response
• 🎯 precision drilling/tapping at up to 15,000 rpm
• 📉 low rotor inertia for quick response

⚖️ Position in Mitsubishi spindle lineup

🧠 Simple explanation

SJ-VL18.5-05FZT is a low-inertia CNC spindle motor designed for fast-cycle drilling and tapping machines, capable of up to 15,000 rpm with very high acceleration performance.