Norton 66253049112 Grinding Wheel 9 Inch 70 Grit Type 35

Product Description

The NORTON 66253049112 is a Type 35 tool grinding wheel designed for precision grinding of cutting tools and workpieces requiring a controlled, medium-grade cut. Built with aluminum oxide abrasive and a vitrified bond, this wheel delivers consistent stock removal and a repeatable surface finish. It carries a J hardness code, placing it in the medium range of wheel hardness, and runs at a maximum of 2,550 RPM. At 9 inches in diameter with a 2-1/32 inch face width, it is sized for bench and pedestal grinders used in tool-and-die, maintenance, and metalworking environments. Licensed tradespeople and toolroom machinists are the primary installers and operators.

This wheel is suited for tool sharpening, reconditioning, and surface grinding applications in industrial and commercial shop settings. The aluminum oxide abrasive is appropriate for grinding high-speed steel, carbon steel, and ferrous alloys. The porous structure of the wheel aids in chip clearance and heat dissipation during extended grinding operations. The gray color and vitrified bond are consistent with standard toolroom grinding wheel construction. This is a single-unit package intended for bench or pedestal grinder use where a 4-15/16 inch hole size is required.

Key Features

• Aluminum oxide abrasive for reliable grinding of ferrous metals and high-speed steel
• Vitrified bond construction for consistent wheel structure and controlled wear
• Porous wheel design promotes chip clearance and reduces heat buildup
• J hardness code (medium) balances wheel life with cutting action
• 9 inch diameter with 2-1/32 inch face width for bench and pedestal grinder applications
• Maximum rated speed of 2,550 RPM for safe operation within grinder speed limits

Compatibility

Designed for bench and pedestal grinders accepting a 9 inch diameter wheel with a 4-15/16 inch arbor hole. Verify that the grinder's rated RPM does not exceed 2,550 RPM before mounting.

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. Before mounting, inspect the wheel for cracks or chips using the ring test, and confirm the machine's maximum operating speed does not exceed the 2,550 RPM rating stamped on the wheel. Always power down and lock out the grinder before changing wheels. Use proper flanges and blotters as required by the machine manufacturer and applicable safety standards.