3M 7100139230 Ceramic Cutoff Wheel 4.5 in Angle Grinder

Product Description

The 3M 7100139230 is a ceramic abrasive cutoff wheel designed for use with angle grinders in metal cutting applications. Built with a resinoid bond and a black ceramic grain, it measures 4.5 inches in diameter and 0.045 inches thick, with a 7/8-inch arbor hole for standard angle grinder spindle fitment. The thin kerf profile reduces material loss and heat buildup during cuts. At 0.08 pounds, this wheel is lightweight and well-suited for repetitive cutting tasks in fabrication, maintenance, and field service work. It is typically installed and used by machinists, pipefitters, ironworkers, and maintenance technicians.

This wheel is intended for use with 4.5-inch angle grinders in both shop and field environments. Typical applications include cutting ferrous metals, structural steel, pipe, rod, and similar stock materials. The ceramic abrasive grain maintains a sharper cutting edge longer than conventional aluminum oxide, making it a practical choice for high-volume cutting in industrial and trade settings. This is a single-wheel package sold in a minimum order quantity of 50 units.

Key Features

• Ceramic abrasive grain for extended cut life and cooler cutting action
• 0.045-inch thin kerf reduces material waste and heat generation
• Resinoid bond provides durability under load and impact
• 7/8-inch arbor hole fits standard angle grinder spindles
• Lightweight at 0.08 pounds for reduced operator fatigue during extended use
• Black wheel color for easy identification on the job site

Compatibility

Designed for use with 4.5-inch angle grinders equipped with a 7/8-inch arbor spindle. Verify grinder RPM rating meets or exceeds the maximum RPM marked on the wheel before installation.

Installation Notes

Cutoff wheels must be installed and operated by trained personnel following ANSI B7.1 safety standards for abrasive wheels. Always power down and disconnect the angle grinder before mounting or removing a wheel. Inspect the wheel for cracks or damage before each use and never operate a damaged wheel. Use the appropriate guard for cutoff wheel operations as required by the tool manufacturer and applicable OSHA standards.