Norton 66252835093 Surface Grinding Wheel 46 Grit 6 in

Product Description

The NORTON 66252835093 is a Type 1 surface grinding wheel designed for precision stock removal on flat surfaces using surface grinders, cylindrical grinders, and CNC cutting tool machines. It measures 6 inches in diameter, 0.5 inches thick, with a 1.25 inch arbor hole. The abrasive grain is aluminum oxide bonded in a vitrified bond matrix, rated K hardness (medium) at a coarse 46 grit. The specification code 32AA46-KVTR identifies the exact wheel formulation for shops that cross-reference grinding wheel specs. Maximum operating speed is 4140 RPM. Licensed grinding technicians and toolroom machinists are the primary installers of this wheel type.

This wheel is suited for surface and cylindrical grinding applications on hard carbon steels, soft carbon steels, and tool steels. The vitrified bond provides a rigid, porous structure that allows coolant penetration and efficient swarf clearance, making it appropriate for both wet and dry surface grinding setups. The 6 inch diameter and coarse 46 grit combination is commonly used for aggressive material removal passes before finishing operations. It fits standard surface grinder spindle configurations accepting a 1.25 inch arbor hole.

Key Features

• Aluminum oxide abrasive grain for effective cutting action on ferrous materials including tool steels
• Vitrified bond construction provides a rigid, porous wheel structure for good coolant flow and swarf removal
• 46 grit coarse grade suited for high stock removal grinding passes
• K hardness code (medium) balances wheel wear against cutting efficiency on a range of steel hardness levels
• Type 1 straight wheel profile with no recess, compatible with standard surface grinder and cylindrical grinder spindles
• Maximum operating speed rated at 4140 RPM

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines accepting a Type 1 straight wheel with a 1.25 inch arbor hole and 6 inch diameter. Recommended material applications include hard carbon steels, soft carbon steels, and tool steels per the 32AA46-KVTR specification.

Installation Notes

Wheel mounting and dressing should be performed by a qualified grinding machine operator or toolroom machinist familiar with ANSI B7.1 safety requirements for the use, care, and protection of abrasive wheels. Always power down and lock out the grinder before mounting or removing a wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the maximum RPM stamped on the wheel or stated in the product specification. Ensure the machine spindle speed does not exceed 4140 RPM for this wheel.