Norton 66252939834 Surface Grinding Wheel 120 Grit 7in

Product Description

The NORTON 66252939834 is a Type 1 surface grinding wheel designed for precision material removal on ferrous and specialty alloy workpieces. Built from white aluminum oxide abrasive with a vitrified bond, this wheel delivers consistent, controlled cutting action across a fine 120-grit surface. The semi-friable grain structure allows dulled abrasive particles to fracture and expose fresh cutting edges, maintaining a sharp wheel face over extended use. At 7 inches in diameter and 1/4 inch thick with a 1-1/4 inch arbor hole, it fits standard surface grinder spindles and is rated to a maximum of 3600 RPM. Licensed grinding technicians and machinist-level trades install and dress this wheel as part of precision surface finishing operations.

This wheel is suited for surface grinding applications on soft carbon steels, tool steels, and super alloys. It is designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. The fine grit and medium hardness rating make it well matched to finish-pass operations where tight tolerances and smooth surface finishes are required. The non-porous, non-tapered, no-recess Type 1 flat wheel profile supports flat and horizontal spindle surface grinder setups common in tool rooms and production grinding environments.

Key Features

• White aluminum oxide abrasive for consistent performance on tool steels and super alloys
• Vitrified bond provides rigid wheel structure and resistance to heat and coolant
• Semi-friable grain continuously self-sharpens to maintain cutting efficiency
• 120 grit fine grade suited for finish grinding and tight tolerance work
• Non-porous, no-recess Type 1 flat wheel profile fits standard surface grinder arbors
• Rated to 3600 RPM maximum operating speed

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines as stated by the manufacturer. Fits spindles with a 1-1/4 inch arbor bore. Intended for material applications including soft carbon steels, tool steels, and super alloys.

Installation Notes

Grinding wheel installation and dressing should be performed by qualified personnel following ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always power down and lock out the machine before mounting or removing the wheel. Inspect the wheel for cracks or chips using the ring test before mounting, and never exceed the maximum rated RPM of 3600. Use proper flanges and blotters as required by the machine manufacturer and applicable safety codes.