Beefy 3.5kW ER25 Spindle Kit With 4 Ceramic Bearings, Square Spindle, ER25 Collets, And A 4kW 220V Frequency Drive, 300Hz, A True Workhorse Upgrade For Faster, Smoother CNC Router Milling

High-Power 3.5kW ER25 Spindle Kit for CNC Routers
✔️ Water-cooled spindle with 4 ceramic bearings, ER25 collets, 300 Hz drive

This water-cooled spindle kit is a powerful upgrade for CNC routers, mills, engraving machines, and other precision machining setups. It combines a 3.5kW motor with ceramic bearings and ER25 tooling to deliver smoother operation, faster material removal, and longer service life.

✅ 3.5 kW water-cooled spindle motor for fast, smooth cutting
✅ Square spindle design for precise alignment and robust mounting
✅ 4 ceramic bearings for low friction, heat resistance, and long life
✅ Includes ER25 collets for common milling tools
✅ 220V drive with up to 300 Hz speed control for fast tuning
✅ Axial preload and live spindle support for stiffness and accuracy

💡 What is a CNC spindle kit with ceramic bearings used for?

- Handy upgrade for higher-speed engraving and milling on CNC routers - Improves tool life and finish quality with ceramic bearings - Compatible with ER25 tooling and 220V drives for common setups - Great for hobbyist shops and light industrial CNC work