Air Cooled Spindle Motor 3.5KW ER20 Square Spindle With Mounting Flange 220V 12A Four Ball Bearings Dustproof Stainless Steel Body Fan Cooling Workhorse For CNC Routers And Milling Machines

High-Power 3.5kW Air-Cooled ER20 Spindle for CNC, Pack: 1pc
✔️ 3.5kW air-cooled ER20 spindle, 220V, single unit

This air-cooled spindle motor is designed for CNC routers and milling machines, delivering strong cutting performance and quiet operation. It uses an ER20 interface and fits standard mounting flanges for quick installation. Ideal for hobbyist to small shop use, where simplicity and reliability matter.

✅ 3.5kW rated power for fast material removal
✅ ER20 square spindle with sturdy mounting flange for quick tool changes
✅ Dustproof stainless steel body with four ball bearings for durability
✅ Fan cooling keeps temps in check without water plumbing

💡 What is a power spindle used for in CNC work? A power spindle drives cutting tools at high RPM for milling and engraving.
- High torque for clean, accurate cuts
- ER20 interface supports standard tooling and quick changes
- Air cooling keeps unit compact and maintenance easy
- Works with VFDs for controlled speed