12x20 Inch CNC High Power Magnetic Chuck for Surface Grinders and EDM Spark, Fine-Sealed Permanent Magnet Grinder Chuck That Holds Tight Like a Boss, Safe Mechanical Operation, No Power Needed Suction Cup Design for Accurate, Vibration-Free Grinds

12x20 Inch CNC Magnetic Chuck for Precise Surface Grinding
✔️ 12x20 inch CNC magnetic chuck, 1 unit, strong grip

The CNC magnetism grinder chuck is a heavy‑duty workholding device for surface grinders, tool grinders, and EDM setups, often used with a linear slide unit for smooth, repeatable motion. It relies on ceramic magnet design for reliable, long‑lasting hold without power consumption.

✅ Size: 12 in × 20 in × 3 in (305 mm × 508 mm × 76 mm)
✅ Weight: about 192 lb (87 kg)
✅ Magnetic strength: high‑performance magnets with uniform pole spacing
✅ Applications: surface grinders, tool grinders, EDM
✅ Operation: lever‑based mechanical opening/closing, no power needed

💡 What is a magnetic chuck used for in precision grinding and EDM work?

A handy fixture that holds parts securely for accurate, repeatable machining.

- Helps secure workpieces during grinding and EDM without power.
- Reduces vibration and movement for better surface finish.
- Simple lever operation enables quick setup and release.