Norton 66243428214 Internal Grinding Wheel 60 Grit

Product Description

The NORTON 66243428214 is a Type 1 internal grinding wheel designed for precision ID grinding operations in machine shop and industrial maintenance environments. Built with aluminum oxide abrasive and a vitrified bond, it delivers consistent stock removal on ferrous metals and hard alloys. The wheel measures 2 inches in diameter by 1/2 inch thick with a 3/8 inch arbor hole, and is rated to a maximum of 16,235 RPM. At medium grade with K hardness, it balances cutting aggression and wheel life for typical bore finishing work. Machinists and tool-and-die technicians are the primary installers of this wheel type.

This wheel is suited for internal grinding applications on cylindrical bore grinders and tool-post grinders in both job shop and production settings. Its compact 2 inch diameter makes it appropriate for small-bore work where a reduced wheel size is required to access the workpiece interior. The 60 grit specification positions it for general-purpose stock removal rather than fine finishing. It is a common choice for maintenance machinists performing bearing seat cleanup, bushing bore sizing, and similar precision grinding tasks on machine components.

Key Features

• Aluminum oxide abrasive construction suited for ferrous metals and hard alloys
• Vitrified bond provides rigidity and consistent form holding during grinding
• Medium grade, K hardness for balanced material removal and wheel durability
• 60 grit for general-purpose stock removal applications
• No-recess Type 1 straight wheel profile for standard ID grinding spindles
• 16,235 maximum RPM rating supports standard internal grinding spindle speeds

Compatibility

Designed as an OEM-style replacement or standard consumable for internal grinding spindles accepting a 3/8 inch arbor hole and a 2 inch diameter Type 1 straight wheel.

Installation Notes

Grinding wheels must be installed and dressed by a qualified machinist or grinding machine operator following ANSI B11.9 and OSHA 29 CFR 1910.215 standards. Always perform a ring test before mounting to check for cracks, and inspect the arbor flanges for damage or contamination before installation. Never exceed the maximum RPM marked on the wheel, and ensure the machine guard is in place before starting the spindle. Power down and lock out the grinder before changing wheels.