Description
Introducing the G-PENNY 2.2KW ER20 80mm Water‑Cooled Spindle Motor, the perfect power source for CNC engraving, milling, and router machines. Engineered for high‑speed precision and reliable performance, this spindle delivers consistent torque at both 220 V and 380 V, while its advanced water‑cooling system keeps temperatures low for extended tool life.
Key Highlights
- 2.2 kW (≈3 HP) ER20 collet, 80 mm (3.15″) capacity – ideal for a wide range of cutting tools
- Dual voltage options: 220 V / 380 V for flexible installation worldwide
- Efficient water‑cooling system ensures stable operation at high speeds
- Comes with 4 high‑precision ball bearings for smooth, low‑vibration performance
- Compact, lightweight design fits most CNC engraving, milling and router frames
- Built‑in overload protection and thermal cut‑off for added safety
Technical Specifications
- Power: 2.2 kW (≈3 HP)
- Spindle Speed: 0 – 24 000 RPM (adjustable via controller)
- Collet Size: ER20, 80 mm (3.15″) max tool diameter
- Voltage: 220 V / 380 V, 50 Hz
- Cooling: Closed‑loop water‑cooling (includes pump and reservoir)
- Bearings: 4 × high‑quality ball bearings (pre‑installed)
- Weight: 12 kg (26.5 lb)
- Dimensions: 210 mm × 120 mm × 80 mm (L × W × H)
Benefits for CNC Operators
- Consistent Cutting Power: The 2.2 kW motor maintains torque across the full speed range, reducing tool chatter.
- Extended Tool Life: Water cooling removes heat efficiently, preventing thermal deformation of both spindle and cutting tools.
- Low Vibration: Four precision ball bearings provide smooth rotation, improving surface finish and dimensional accuracy.
- Easy Integration: Dual voltage compatibility simplifies wiring for both single‑phase and three‑phase setups.
- Safety First: Built‑in overload and thermal protection safeguard your machine and workspace.
Installation & Compatibility
The G‑PENNY spindle is designed for quick mounting on standard CNC frames. It includes all necessary mounting brackets and a detailed wiring diagram. Compatible with most CNC routers, engraving machines, and milling centers that accept an ER20 collet and 80 mm tool shank.
Why Choose G‑PENNY?
G‑PENNY is a trusted brand in industrial motion solutions, known for durability, precision engineering, and responsive customer support. When you choose the G‑PENNY 2.2 kW Water‑Cooled Spindle Motor, you invest in a reliable component that maximizes productivity and reduces downtime.






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