Norton 66253117874 Cutoff Wheel 9in Aluminum Oxide Type 1

Product Description

The NORTON 66253117874 is a Type 1 (01/41) aluminum oxide cutoff wheel designed for stationary abrasive cutting tools. It measures 9 inches in diameter with a 0.063-inch thickness and a 1-1/4-inch arbor hole. The resinoid bond and aluminum oxide abrasive grain make this wheel well-suited for aggressive cutting on steel, including very hard steels in the Rc 55-68 range. It carries a maximum operating speed of 4,025 RPM and is rated to the ML-109 specification. This non-reinforced Type 1 flat wheel is used by machinists, fabricators, and tool-room technicians who require precise cutoff work on bench or pedestal-mounted stationary grinders.

This cutoff wheel is intended for stationary tool use, not handheld angle grinders. It is appropriate for cutting steel workpieces, including high-hardness tool steels and die steels in the Rc 55-68 hardness range. The aluminum oxide grain and resinoid bond deliver consistent cut quality across repetitive production-cutting operations common in machine shops, fabrication facilities, and maintenance environments.

Key Features

• Aluminum oxide abrasive grain rated for steel and very hard steels (Rc 55-68)
• Type 1 (01/41) flat wheel profile for straight cutoff applications
• Resinoid bond provides durability during stationary machine use
• Non-reinforced construction sized for stationary bench and pedestal grinders
• ML-109 specification compliance
• Maximum operating speed of 4,025 RPM

Compatibility

Designed for use with stationary abrasive cutoff machines and pedestal or bench grinders accepting a 9-inch diameter, Type 1 wheel with a 1-1/4-inch arbor hole. Not rated for handheld angle grinder use.

Installation Notes

Installation should be performed by a qualified operator familiar with abrasive wheel safety per ANSI B7.1 standards. Always power down and lock out the machine before mounting or removing the wheel. Inspect the wheel for cracks or chips before each use and perform a ring test on non-reinforced wheels. Never exceed the maximum RPM stamped on the wheel or listed by the manufacturer.