Norton 66243530523 Type 6 Grinding Wheel 80 Grit

Product Description

The NORTON 66243530523 is a Type 6 straight-cup grinding wheel designed for precision tool grinding and surface grinding applications. It measures 4 inches in diameter with a 2-inch overall thickness and a 3/8-inch face width. The wheel uses aluminum oxide abrasive with a vitrified bond and carries a J hardness code, placing it in the medium grade range. Rated to a maximum of 5,730 RPM, it is suited for bench grinder and pedestal grinder setups used in tool rooms, maintenance shops, and manufacturing environments. Licensed tradespeople and toolroom machinists are the primary installers and operators of this wheel type.

This grinding wheel is suited for tool sharpening, surface dressing, and precision stock removal on harder materials where aluminum oxide abrasive performs effectively. Its non-porous, vitrified-bond construction delivers consistent cutting action and shape retention during use. The white wheel color and 38A80-JVBE specification indicate a friable grain structure engineered for cooler cutting, reducing heat buildup at the workpiece. This makes it a practical choice for grinding high-speed steel tooling, drill bits, and lathe tools in both production and maintenance settings.

Key Features

• Aluminum oxide abrasive with vitrified bond for consistent, controlled stock removal
• J hardness code (medium grade) provides a balance between wheel life and cutting aggressiveness
• Friable grain structure promotes cooler cutting and reduced workpiece heat damage
• Non-porous construction supports dimensional stability and predictable wheel wear
• 5,730 maximum RPM rating suitable for standard bench and pedestal grinder spindle speeds
• 38A80-JVBE specification for straightforward cross-referencing and replacement ordering

Compatibility

Designed as an OEM-style replacement or direct-fit grinding wheel for Type 6 straight-cup wheel applications on bench grinders and pedestal grinders accepting a 4-inch diameter wheel with a 20 mm hole size.

Installation Notes

Grinding wheel mounting and dressing should be performed by qualified personnel following 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 a wheel. Inspect the wheel for cracks or chips using the ring test before installation, and never exceed the maximum RPM stamped on the wheel. A proper flange and wheel blotter must be used, and the wheel should be dressed and trued before putting it into service.