Norton 662528-43193 Type 27 Grinding Wheel 4.5in Zirconia

Product Description

The NORTON 662528-43193 is a Type 27 depressed center grinding wheel designed for aggressive material removal on metal, fabricated steel, and weld seams. Built with a Zirconia Alumina abrasive mineral and Blue Fire Fastcut construction, this wheel delivers a fast, cool cut that extends wheel life and reduces operator fatigue during sustained grinding. It measures 4.5 inches in diameter by 0.25 inches thick with a 5/8-11 inch threaded hub. Weighing 0.25 pounds, it is sold individually and is suited for use with standard 4.5-inch right-angle grinders. Fabricators, ironworkers, pipefitters, and general metal tradespeople rely on this wheel for everyday weld blending and surface conditioning work.

This wheel is a common choice for light to medium fabrication shops, on-site welding and pipe fitting, and structural steel work. The Type 27 depressed center profile provides clearance that allows the wheel to contact workpiece surfaces at a low angle, improving control during weld flush grinding and bevel preparation. The Zirconia Alumina abrasive self-sharpens under pressure, making it effective on mild steel, stainless steel, and other tough alloys where consistent stock removal matters. Minimum order quantity from the supplier is 10 wheels per box.

Key Features

• Type 27 depressed center profile for low-angle contact and improved surface access
• Zirconia Alumina abrasive self-sharpens under load for consistent cut rate
• Blue Fire Fastcut construction delivers fast, cool grinding to reduce heat buildup
• 4.5 x 0.25 x 5/8-11 inch dimensions fit standard right-angle grinders with 5/8-11 spindles
• Lightweight at 0.25 pounds per wheel, reducing spindle load and operator fatigue
• Sold per each with a minimum quantity of 10 per box

Compatibility

Designed for use with 4.5-inch right-angle grinders equipped with a 5/8-11 inch threaded spindle. Consult your grinder manufacturer specifications to confirm maximum allowable wheel thickness and RPM rating before mounting.

Installation Notes

Mounting and use of grinding wheels should be performed by qualified trade personnel familiar with ANSI B7.1 safe use standards for abrasive wheels. Before mounting, inspect the wheel for cracks or damage and verify the grinder spindle speed does not exceed the wheel maximum RPM rating. Always install the proper flanges and tighten the retaining nut securely before operation. Wear appropriate PPE including a face shield, gloves, and hearing protection during use.

Technical Specifications

• Wheel Type: Type 27 Depressed Center
• Diameter: 4.5 inches
• Thickness: 0.25 inches
• Arbor Size: 5/8-11 inches
• Abrasive Mineral: Zirconia Alumina
• Style: Blue Fire Fastcut
• Weight: 0.25 pounds
• Sold As: Each
• Minimum Order Quantity: 10 per box

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 662528-43193