3M 7100303964 Cubitrona 3 Grinding Wheel 4 in 1/4 in

Product Description

The 3M 7100303964 is a 4-inch depressed center grinding wheel built around 3M Re-Engineered Precision-Shaped Grain, a proprietary ceramic abrasive technology. The grain features sharp, angular structures that continuously fracture during use, forming new cutting points. This self-sharpening action keeps the wheel running cool and wearing evenly across its service life. The 7100303964 is rated for heavy weld removal and other demanding grinding tasks on metal substrates. It is a rigid bonded wheel intended for use with standard right-angle grinders on fabrication and maintenance work.

This wheel is formulated for use on stainless steel, mild steel, and aerospace alloys, and performs acceptably on most other metal materials. It is suited to heavy industrial fabrication, structural steel work, welding shops, aerospace maintenance, and field repair environments. The depressed center profile allows clearance for flange mounting and access in confined grinding areas. Minimum order quantity is 2 units per pack.

Key Features

• Re-Engineered Precision-Shaped ceramic grain continuously fractures to expose fresh cutting edges, reducing heat buildup and extending wheel life
• Delivers up to 15% higher cut rate compared to the Cubitrona II, reducing time on tool and required downside pressure
• Removes up to 1.5 times more material compared to the Cubitrona II, resulting in fewer wheel changeovers per job
• Specially formulated for stainless steel, mild steel, and aerospace alloys while remaining effective on most other metals
• Depressed center profile provides flange clearance and improves access in tight grinding applications
• Rigid bonded construction supports consistent performance under heavy weld removal loads

Compatibility

Designed for use on stainless steel, mild steel, and aerospace alloys; compatible with standard right-angle grinders accepting 4-inch depressed center grinding wheels.

Installation Notes

Mounting and replacement of grinding wheels should be performed by qualified personnel familiar with abrasive wheel safety. Always power down and disconnect the grinder from its power source before removing or installing a wheel. Inspect the wheel for cracks or damage before each use and never operate above the rated maximum RPM marked on the wheel. Follow applicable ANSI B7.1 safety requirements for the use, care, and protection of abrasive wheels.