Norton 66252940523 Surface Grinding Wheel 46 Grit Type 1

Product Description

The NORTON 66252940523 is a Type 1 surface grinding wheel designed for aggressive stock removal on hard ferrous metals and specialty alloys. Built with a ceramic abrasive grain and a vitrified bond, it delivers consistent cut rates and thermal resistance across extended grinding cycles. The wheel measures 7 inches in diameter, 0.5 inches thick, with a 1.25-inch arbor hole, and carries a 46 grit coarse grade with an I hardness code rated at 3,600 RPM. Weighing 1.59 pounds, it is suited for production grinding where wheel life and cut efficiency are priorities. Licensed machinists, tool-and-die makers, and grinding technicians are the primary installers and operators of this wheel.

This wheel is engineered for use on surface grinders, cylindrical grinders, and CNC cutting tool machines. It is specifically suited for grinding 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron. The 5SG Type 1 series designation and vitrified porous bond structure make it a dependable choice for precision surface and cylindrical grinding operations in both job shop and production environments.

Key Features

• Ceramic abrasive grain with vitrified bond for consistent cut rate and extended wheel life
• 46 grit coarse grade for aggressive stock removal on hard ferrous and specialty alloy materials
• Porous wheel structure promotes coolant flow and reduces heat buildup at the grinding interface
• Semi-friable grain construction allows controlled self-sharpening during use
• Type 1 flat wheel profile with no recess, compatible with standard surface and cylindrical grinder arbors
• Maximum operating speed of 3,600 RPM rated by manufacturer

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Suitable material applications include 400 series stainless steel, hard carbon steels, tool steels, titanium, super alloys, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting and dressing should be performed by a qualified machinist or grinding technician following ANSI B11.9 and applicable OSHA abrasive wheel standards. Always verify the machine spindle speed does not exceed the 3,600 RPM maximum rating marked on the wheel before mounting. Inspect the wheel for cracks or chips using a ring test prior to installation, and ensure the arbor hole fits the spindle without forcing. Use proper flanges and blotters as required, and never exceed the rated maximum RPM under any operating condition.