Norton 66253246888 Surface Grinding Wheel 14in 60 Grit

Product Description

The NORTON 66253246888 is a Type 5 vitrified aluminum oxide surface grinding wheel engineered for aggressive stock removal on hard and soft ferrous metals, tool steels, stainless, and cast iron. It measures 14 inches in diameter and 2 inches thick, with a 5-inch arbor hole and a single-side recess of 8 inches diameter by 1 inch deep. The 60-grit, K-hardness (medium grade) bond specification — 60K8V32A — delivers a balance of cut rate and wheel life suited to production surface and cylindrical grinding applications. Rated at a maximum of 2320 RPM, this wheel is intended for use by machinists and grinding technicians operating industrial grinding equipment.

The 66253246888 is designed for use on surface grinders and cylindrical grinders in both job shop and production environments. It handles a broad range of materials including 400 series stainless steel, hard and soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron. The Type 5 recessed profile supports coolant flow and reduces thermal loading at the grinding face, making it appropriate for precision flat-surface work and OD grinding where heat control and consistent surface finish are priorities.

Key Features

• Type 5 single-side recess geometry — 8-inch recess diameter, 1-inch recess depth
• 60 grit, K hardness, vitrified bond — specification 60K8V32A
• Aluminum oxide abrasive, medium grade, non-porous structure
• Rated for 2320 RPM maximum operating speed
• Compatible with wide material range including stainless, carbon steels, tool steels, and cast iron
• Blue and gray wheel color consistent with NORTON 32A series identification

Compatibility

Suitable for use with surface grinders and cylindrical grinders. Confirmed material applications include 400 series stainless steel, hard carbon steels, soft carbon steels, tool steels, aluminum, cast iron, ductile iron, and gray iron.

Installation Notes

Grinding wheel mounting and dressing should be performed by qualified personnel following ANSI B7.1 safety standards. Always inspect the wheel for cracks or chips using a ring test before mounting, and never exceed the rated maximum RPM of 2320. Power down and lock out the grinder before changing wheels, and ensure the arbor flange and blotter are properly seated before tightening. A fresh wheel should be trued and dressed before use to ensure concentricity and correct profile.