Superior Abrasives A020556 Psa Disc 20 in 40 Grit Zirconia

Product Description

The SUPERIOR ABRASIVES A020556 is a pressure-sensitive adhesive (PSA) abrasive disc built for heavy material removal on platen grinders. This disc measures 20 inches in diameter and uses 40-grit zirconia alumina abrasive, placing it in the coarse grade range for aggressive stock removal. The X-weight cloth backing provides the rigidity and durability needed for high-pressure grinding applications. The blue disc carries no vacuum holes and is rated for flexible use, making it suited to both flat and contoured surface work. Licensed abrasive technicians and industrial grinding operators are the primary installers and end users of this product.

This disc is designed for use on platen grinders in professional and industrial settings. It performs across a broad range of materials including ferrous metals, stainless steel, non-ferrous metals, exotic alloys, composite materials, and plastics. Its coarse 40-grit cut makes it a first-stage disc for surface preparation, weld blending, or heavy deburring. The PSA mount allows for quick disc changes on compatible platen grinder platens, reducing downtime in production environments.

Key Features

• 20-inch diameter PSA disc for platen grinder applications
• 40-grit zirconia alumina abrasive for aggressive, coarse-grade stock removal
• X-weight cloth backing for high-pressure rigidity and durability
• Flexible construction suitable for flat and contoured surfaces
• Compatible with ferrous metals, stainless steel, non-ferrous metals, exotic alloys, composites, and plastics
• No vacuum holes - designed for solid platen grinding surfaces

Compatibility

Designed for use on platen grinders. Rated for material applications including composite material, exotic alloy, ferrous metal, non-ferrous metal, plastic, and stainless steel. Maximum operating speed is 1720 RPM.

Installation Notes

This disc is installed by industrial grinding operators or abrasive equipment technicians. Before mounting, confirm the platen grinder is fully powered down and locked out per applicable LOTO procedures. Clean the platen surface of debris and old adhesive residue before applying the PSA disc to ensure full contact and prevent slippage. Never exceed the rated maximum speed of 1720 RPM during operation.