Norton 662530-21633 Type 27 Grinding Wheel 9x1/4x7/8 6600 Rpm

Product Description

The NORTON 662530-21633 is a Type 27 depressed center grinding wheel built for metal grinding applications. Part of the NorZon Plus product line, this wheel measures 9 inches in diameter, 1/4 inch thick, and features a 7/8-inch arbor hole. It is rated to a maximum of 6600 RPM. The depressed center design provides clearance for flat and flush grinding work on metal surfaces, making it a reliable choice for fabrication shops, maintenance crews, and trade professionals who work with angle grinders regularly.

This grinding wheel is suited for aggressive metal stock removal on structural steel, weld seams, castings, and similar ferrous materials. The Type 27 profile — sometimes called a raised hub wheel — allows grinding at lower angles to the work surface, which is well suited to flat surface work and weld blending. Licensed tradespeople in ironworking, pipefitting, and general fabrication will find this wheel appropriate for daily production use.

Key Features

• Type 27 depressed center design for flat and flush grinding with clearance
• 9 x 1/4 x 7/8 inches — standard sizing compatible with common angle grinder spindles
• Maximum rated speed of 6600 RPM
• NorZon Plus formulation engineered for metal grinding performance
• Sold individually (each)

Compatibility

Designed as an OEM-style replacement or standard consumable for angle grinders accepting a 7/8-inch arbor and rated for Type 27 grinding wheels up to 9 inches in diameter.

Installation Notes

Type 27 grinding wheels must be mounted by a qualified operator following ANSI B7.1 safety standards and the grinder manufacturer's instructions. Always inspect the wheel for cracks or chips before mounting and never exceed the maximum rated RPM marked on the wheel. Ensure the grinder guard is in place before operation and wear appropriate PPE including a face shield. Disconnect power to the tool before mounting or removing the wheel.