4-1/2" Zirconia Resin Fiber Discs
4-1/2" Zirconia Resin Fiber Discs — Premium Metal Grinding
USA1 Abrasives 4-1/2" Zirconia Resin Fiber Discs are engineered for demanding metalworking applications where aluminum oxide wears out too quickly. Zirconia alumina abrasive is sharper and more durable than aluminum oxide, delivering superior cut rate and longer disc life on stainless steel, hardened steel, and other tough metals. The most popular angle grinder size. 7/8" arbor hole. Sold in packs of 25 discs.
Technical Specifications
- Abrasive Material: Zirconia alumina
- Backing: Heavy fiber
- Arbor Hole: 7/8"
- Diameter: 4-1/2"
- Package Size: 25 discs per pack
- Available Grits: 24, 36, 50, 60, 80
- Compatible Tools: 4-1/2" angle grinders
Key Features & Benefits
- Zirconia Abrasive: Sharper than aluminum oxide, more durable — outlasts standard discs on hard metals
- Self-Sharpening: Grains fracture under pressure to expose fresh cutting edges
- Extended Disc Life: Significantly longer life than aluminum oxide on stainless and hard metals
- Heavy Fiber Backing: Rigid backing withstands aggressive angle grinder use
- Pack of 25: Economical supply for production use
Recommended Applications
- Stainless steel grinding and weld blending
- Hardened metal stock removal
- Scale and rust removal on tough metals
- Heavy deburring on metal fabrications
Grit Selection Guide
- 24-36 Grit: Aggressive stock removal and weld grinding
- 50-60 Grit: General grinding and blending
- 80 Grit: Surface conditioning on hard metals
Zirconia Power. Longer Disc Life. Built for Hard Metals. 25 Discs Per Pack.