Norton 66252836664 Surface Grinding Wheel 6in 120 Grit

Product Description

The NORTON 66252836664 is a Type 1 surface grinding wheel engineered for precision flat-surface stock removal on soft carbon steels, tool steels, and super alloys. Built on an aluminum oxide abrasive with a vitrified bond, it delivers consistent cut rates and durable wheel life in wet grinding applications. The wheel measures 6 inches in diameter, 0.5 inches thick, and carries a 1.25-inch arbor hole. Rated at 4140 RPM maximum and graded Fine at 120 grit with a K hardness code, it balances material removal with surface finish quality. Wheel color is white and the semi-friable grain structure supports controlled breakdown during the cut.

This wheel is suited for use on surface grinders, cylindrical grinders, and CNC cutting tool machines in professional tool shops and maintenance environments. The 38A Type 1 series is a recognized configuration for toolroom and production grinding of steels and high-temperature alloys. Its non-porous, non-tapered, no-recess geometry makes it a straightforward drop-in for standard straight-wheel spindle setups. Licensed grinding technicians and tool-and-die machinists are the primary installers in both job shop and production settings.

Key Features

• Aluminum oxide abrasive, semi-friable grain for controlled wheel breakdown
• Vitrified bond provides rigidity and precise form retention during surface grinding
• 120 grit Fine grade delivers smooth surface finishes on steel and super alloys
• K hardness (Medium) balances wheel wear against workpiece material hardness
• Wet operation compatible for coolant-fed CNC and surface grinder setups
• Type 1 straight-wheel geometry with no recess and no taper for direct spindle mounting

Compatibility

Designed for use with surface grinders, cylindrical grinders, and CNC cutting tool machines. Rated for soft carbon steels, tool steels, and super alloys. Arbor hole size of 1.25 inches fits standard straight-wheel spindle configurations.

Installation Notes

Installation should be performed by a qualified machinist or grinding specialist following ANSI B11.9 safe-use guidelines for abrasive wheels. Always inspect the wheel for cracks or chips before mounting and perform a ring test. Power down and lock out the machine before changing wheels. Do not exceed the 4140 RPM maximum speed rating stamped on the wheel.