Norton 69014192021 Cbn Surface Grinding Wheel 120 Grit

Product Description

The NORTON 69014192021 is a Type 1A1 cubic boron nitride (CBN) surface grinding wheel designed for precision material removal on hard and hardened steels. Built with a resinoid bond and medium hardness (hardness code T), it delivers controlled stock removal at 120 grit, a fine grade suited for finishing passes and tight-tolerance surface work. The wheel measures 7 inches in diameter, 0.25 inches thick, with a 1.25-inch arbor hole and a superabrasive depth of 0.25 inches. Wet operation is specified, making it appropriate for high-production surface grinding setups where coolant is available. Machinists, tool-and-die makers, and grinding specialists are the primary installers.

This wheel is intended for roughing and cut-off operations on ferrous materials, particularly hardened tool steels, high-speed steels, and superalloys where conventional abrasives wear too quickly. The Type 1A1 flat-wheel profile fits standard surface grinding machines with a 1.25-inch spindle bore. Its 75 concentration CBN formulation balances wheel life with consistent cut rates across extended production runs. No recess and no taper keep setup straightforward on compatible surface grinders.

Key Features

• CBN abrasive material for long wheel life on hardened ferrous workpieces
• 120 grit, fine grade for controlled stock removal and surface finish
• Resinoid bond with medium hardness (T) for stable, consistent grinding action
• Wet operation design requires coolant for optimal performance and wheel longevity
• Type 1A1 flat profile with no recess and no taper for straightforward machine mounting
• 75 CBN concentration balances cut rate with extended service life

Compatibility

Designed for use on surface grinding machines equipped with a 1.25-inch arbor bore accepting a Type 1A1 straight wheel. Confirm spindle speed rating against the machine's maximum RPM before mounting.

Installation Notes

Installation should be performed by a qualified machinist or grinding specialist following ANSI B7.1 safety standards for abrasive wheel mounting. Power down and lock out the grinder before mounting or removing the wheel. Use proper flanges and blotters as specified by the machine manufacturer, and never exceed the wheel's rated maximum operating speed. Ring-test the wheel before mounting to check for cracks or damage.