Bullard 37628 Flap Disc Type 29 80 Grit 4.5 Inch Zirconium

Product Description

The BULLARD 37628 is a Type 29 zirconium flap disc designed for aggressive metal grinding and finishing applications. Built on the Tornado-Z standard profile, this disc delivers consistent stock removal and long service life on ferrous and non-ferrous metals. It measures 4.5 inches in diameter with a 5/8-11 threaded arbor hole and carries an 80-grit zirconium oxide abrasive that cuts fast while resisting heat buildup. Rated to a maximum of 13,300 RPM, it is suitable for use on standard right-angle grinders. Sold individually, with a box quantity of 10 units per case.

This flap disc is used in metal fabrication, welding shops, and general industrial maintenance where surface grinding, blending, and finishing on steel, stainless steel, and similar metals are required. The Type 29 angled profile increases surface contact on flat and contoured workpieces, making it well-suited for both heavy material removal and intermediate finishing passes. It is a common choice for welders, pipefitters, ironworkers, and general metal tradespeople working on structural steel, pipe, and sheet metal.

Key Features

• Zirconium oxide abrasive for fast cutting and extended disc life on metal
• Type 29 standard profile increases contact angle for aggressive stock removal on flat and curved surfaces
• 80-grit rating balances material removal with surface finish quality
• 4.5-inch diameter with 5/8-11 arbor fits standard right-angle grinders
• 13,300 RPM maximum speed rating for safe operation on common grinder models
• Sold individually with box quantity of 10

Compatibility

Designed for use with right-angle grinders accepting a 4.5-inch disc and a 5/8-11 threaded spindle. Suitable for grinding and finishing operations on metal substrates.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with angle grinder safety practices. Verify the grinder spindle speed does not exceed the 13,300 RPM disc rating before mounting. Ensure the grinder is fully powered down and unplugged before mounting or removing the disc. Always use the appropriate guard and personal protective equipment, including a face shield and hearing protection, during operation.

Technical Specifications

• Disc Type: Type 29 Standard Profile
• Abrasive Material: Zirconium Oxide
• Grit: 80
• Diameter: 4.5 inches
• Arbor Size: 5/8-11
• Maximum RPM: 13,300
• Application: Metal Grinding and Finishing
• Box Quantity: 10
• Unit of Measure: Each

Standard Information

• Brand: BULLARD
• Manufacturer Part Number: 37628