The YM Series Pre-Grinders are specialized metallurgical sample preparation machines designed for efficient specimen pre-grinding before polishing. These industrial-grade machines feature advanced vacuum-based working principles and larger grinding components for superior performance in material testing laboratories.

Water flows through a pipe into the rotating grinding wheel. The eccentric force throws water under the grinding disc, creating a vacuum that securely holds the abrasive paper during operation. When rotation stops, the vacuum releases, allowing easy removal of the abrasive paper.

• Larger 250mm diameter grinding wheels for enhanced efficiency
• Vacuum-based abrasive paper holding system for secure operation
• Multiple speed options (400-780 rpm) for various material types
• Water-cooled operation prevents sample overheating
• Easy abrasive paper replacement with automatic release system
• Robust construction with industrial-grade motors (0.2KW-0.55KW)

Ideal for metallurgical laboratories, material testing facilities, quality control departments, and research institutions requiring precise sample preparation for hardness testing, microstructural analysis, and material characterization.