Norton 66243529875 Type 11 Grinding Wheel 4 in 60 Grit

Product Description

The NORTON 66243529875 is a Type 11 vitrified aluminum oxide grinding wheel designed for tool grinding and offhand grinding applications. At 4 inches in diameter with a 1/4-inch face width, this wheel operates at a maximum of 5,730 RPM and carries a 60-grit, J-hardness (medium) rating. The vitrified bond provides consistent stock removal on steel and ferrous tooling surfaces. Licensed tradespeople and tool room operators use this wheel on bench and pedestal grinders where controlled material removal and surface accuracy are required.

This wheel is suited for tool room environments, maintenance shops, and light industrial settings where precision tool grinding is performed. The 4-inch diameter and Type 11 flaring-cup configuration make it a practical fit for resharpening cutting tools, drill bits, and similar shop tooling. The non-porous aluminum oxide structure maintains wheel integrity across repeated use cycles at rated speed. A 1-1/4-inch hole size accommodates standard bench grinder spindle arbors common in trade and shop settings.

Key Features

• Type 11 flaring-cup wheel geometry for tool grinding and offhand applications
• Aluminum oxide abrasive with vitrified bond for consistent, controlled cut
• 60 grit, J hardness (medium grade) — specification code 32AA60-JVTR
• Rated to 5,730 RPM maximum operating speed
• Non-porous gray wheel construction resists loading on ferrous materials
• 1-1/4-inch hole size fits standard bench and pedestal grinder arbors

Compatibility

Designed as an OEM-style replacement or direct fitment grinding wheel for bench and pedestal grinders accepting a Type 11 flaring-cup wheel with a 4-inch diameter, 1-1/4-inch hole, and standard arbor configuration.

Installation Notes

Installation should be performed by a qualified tool room operator or maintenance technician following applicable ANSI B7.1 safety standards for the use, care, and protection of abrasive wheels. Always power down and lock out the grinder before mounting or removing the wheel. Inspect the wheel for cracks or chips before installation and perform a ring test as required by standard practice. Never exceed the maximum rated RPM marked on the wheel.