Alpha Professional Tools Vextra Disc
Alpha® Vextra™ Flat Diamond Grinding Disc 4-1/2", #35, 7/8" Arbor (VDD4535)The Alpha® Vextra™ flat diamond grinding disc is engineered for grinding steel, stainless steel and non-f errous metals where spark mitigation matters — including explosive (Ex) zones. Its sandwich construction with rubber damping makes the disc light, reduces vibration and noise, and minimizes operator fatigue. Optimized diamond grit and layer arrangement deliver long life and consistent performance — users typically report 50–60× the life of conventional abrasives. This listing is VDD4535: 4-1/2" diameter, #35 grit, 7/8" arbor for high-speed angle grinders.Features Designed to grind steel, stainless steel and non-ferrous metals with spark mitigation Removes rust, burrs, mill scale and paint on metal surfaces without clogging Eliminates epoxy, glues and adhesives cleanly Also runs on natural stone, engineered stone/quartz, wood and rubber Sandwich construction with rubber damping reduces noise and vibration Optimized diamond grit and layer arrangement for consistent, aggressive cut Up to 50–60× the life of conventional abrasive discs Available 4-1/2", 5", and 7" with 7/8" arbor or 5/8"-11 zinc hub .dst-accordion { margin-top: 25px; border: 1px solid #FDDCC5; border-radius: 6px; overflow: hidden; } .dst-accordion-item { border-bottom: 1px solid #FDDCC5; } .dst-accordion-item:last-child { border-bottom: none; } .dst-accordion-toggle { display: none; } .dst-accordion-label { display: flex; justify-content: space-between; align-items: center; padding: 14px 20px; cursor: pointer; font-size: 17px; font-weight: 700; color: #231F20; background: #fff; transition: background 0.2s; } .dst-accordion-label:hover { background: #FFF3EB; } .dst-accordion-label::after { content: '+'; font-size: 22px; font-weight: 700; color: #F15C22; transition: transform 0.3s; } .dst-accordion-toggle:checked + .dst-accordion-label { background: #FFF3EB; } .dst-accordion-toggle:checked + .dst-accordion-label::after { content: '\2212'; } .dst-accordion-content { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; padding: 0 20px; background: #fff; } .dst-accordion-toggle:checked ~ .dst-accordion-content { max-height: 5000px; padding: 15px 20px 20px; } Models / Part Numbers Part No. Diameter Grit Arbor Max RPM UPC VDD4535 4-1/2" #35 7/8" 13,200 RPM 749173670541 VDD453H 4-1/2" #35 5/8"-11 13,200 RPM 749173670558 VDD455H 4-1/2" #50 5/8"-11 13,200 RPM 749173670572 VDD4580 4-1/2" #80 7/8" 13,200 RPM 749173670664 VDD458H 4-1/2" #80 5/8"-11 13,200 RPM 749173670671 VDD5035 5" #35 7/8" 12,200 RPM 749173670220 VDD503H 5" #35 5/8"-11 12,200 RPM 749173670237 VDD5050 5" #50 7/8" 12,200 RPM 749173670244 VDD505H 5" #50 5/8"-11 12,200 RPM 749173670251 VDD5080 5" #80 7/8" 12,200 RPM 749173670589 VDD508H 5" #80 5/8"-11 12,200 RPM 749173670596 VDD7035 7" #35 7/8" 8,400 RPM 749173670602 VDD703H 7" #35 5/8"-11 8,400 RPM 749173670619 VDD7050 7" #50 7/8" 8,400 RPM 749173670626 VDD705H 7" #50 5/8"-11 8,400 RPM 749173670633 VDD7080 7" #80 7/8" 8,400 RPM 749173670640 VDD708H 7" #80 5/8"-11 8,400 RPM 749173670657 VDD4550 4-1/2" #50 7/8" 13,200 RPM 749173670565 How to Use Confirm the disc diameter and arbor match your grinder — this VDD4535 is 4-1/2" with a 7/8" arbor. Mount on a high-speed angle grinder, sander or polisher using the tool's original flange and lock nut (7/8" arbor models) or thread directly onto the spindle (5/8"-11 zinc-hub models). Verify grinder no-load RPM does not exceed the disc Max RPM (13,200 RPM for 4-1/2", 12,200 RPM for 5", 8,400 RPM for 7"). Start with #35 grit for aggressive stock removal (this listing), #50 for general purpose, #80 for finer finish work. Run dry, or feed water at the disc face to keep dust down — the Vextra works wet. For virtually dust-free grinding on stone, pair with an Ecoguard G retrofit and a HEPA vacuum. Note: some metal powders are combustible — confirm material safety before vacuum collection. Inspect the disc before each use; replace if cracked, glazed or worn below useful diamond depth. Specifications by Variant Vextra Flat Diamond Grinding Disc 4-1/2", #35 grit, 7/8" arbor — VDD4535 Part No. VDD4535 UPC 749173670541 Type Vextra Flat Diamond Grinding Disc 4-1/2", #35 grit, 7/8" arbor Max RPM 13,200 RPM Packaged Weight 0.50 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 4-1/2", #35 grit, 5/8"-11 arbor — VDD453H Part No. VDD453H UPC 749173670558 Type Vextra Flat Diamond Grinding Disc 4-1/2", #35 grit, 5/8"-11 arbor Max RPM 13,200 RPM Packaged Weight 0.60 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 4-1/2", #50 grit, 5/8"-11 arbor — VDD455H Part No. VDD455H UPC 749173670572 Type Vextra Flat Diamond Grinding Disc 4-1/2", #50 grit, 5/8"-11 arbor Max RPM 13,200 RPM Packaged Weight 0.60 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 4-1/2", #80 grit, 7/8" arbor — VDD4580 Part No. VDD4580 UPC 749173670664 Type Vextra Flat Diamond Grinding Disc 4-1/2", #80 grit, 7/8" arbor Max RPM 13,200 RPM Packaged Weight 0.50 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 4-1/2", #80 grit, 5/8"-11 arbor — VDD458H Part No. VDD458H UPC 749173670671 Type Vextra Flat Diamond Grinding Disc 4-1/2", #80 grit, 5/8"-11 arbor Max RPM 13,200 RPM Packaged Weight 0.60 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 5", #35 grit, 7/8" arbor — VDD5035 Part No. VDD5035 UPC 749173670220 Type Vextra Flat Diamond Grinding Disc 5", #35 grit, 7/8" arbor Max RPM 12,200 RPM Packaged Weight 0.55 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 5", #35 grit, 5/8"-11 arbor — VDD503H Part No. VDD503H UPC 749173670237 Type Vextra Flat Diamond Grinding Disc 5", #35 grit, 5/8"-11 arbor Max RPM 12,200 RPM Packaged Weight 0.65 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 5", #50 grit, 7/8" arbor — VDD5050 Part No. VDD5050 UPC 749173670244 Type Vextra Flat Diamond Grinding Disc 5", #50 grit, 7/8" arbor Max RPM 12,200 RPM Packaged Weight 0.55 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 5", #50 grit, 5/8"-11 arbor — VDD505H Part No. VDD505H UPC 749173670251 Type Vextra Flat Diamond Grinding Disc 5", #50 grit, 5/8"-11 arbor Max RPM 12,200 RPM Packaged Weight 0.65 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 5", #80 grit, 7/8" arbor — VDD5080 Part No. VDD5080 UPC 749173670589 Type Vextra Flat Diamond Grinding Disc 5", #80 grit, 7/8" arbor Max RPM 12,200 RPM Packaged Weight 0.55 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 5", #80 grit, 5/8"-11 arbor — VDD508H Part No. VDD508H UPC 749173670596 Type Vextra Flat Diamond Grinding Disc 5", #80 grit, 5/8"-11 arbor Max RPM 12,200 RPM Packaged Weight 0.65 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 7", #35 grit, 7/8" arbor — VDD7035 Part No. VDD7035 UPC 749173670602 Type Vextra Flat Diamond Grinding Disc 7", #35 grit, 7/8" arbor Max RPM 8,400 RPM Packaged Weight 1.15 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 7", #35 grit, 5/8"-11 arbor — VDD703H Part No. VDD703H UPC 749173670619 Type Vextra Flat Diamond Grinding Disc 7", #35 grit, 5/8"-11 arbor Max RPM 8,400 RPM Packaged Weight 1.25 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 7", #50 grit, 7/8" arbor — VDD7050 Part No. VDD7050 UPC 749173670626 Type Vextra Flat Diamond Grinding Disc 7", #50 grit, 7/8" arbor Max RPM 8,400 RPM Packaged Weight 1.15 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 7", #50 grit, 5/8"-11 arbor — VDD705H Part No. VDD705H UPC 749173670633 Type Vextra Flat Diamond Grinding Disc 7", #50 grit, 5/8"-11 arbor Max RPM 8,400 RPM Packaged Weight 1.25 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 7", #80 grit, 7/8" arbor — VDD7080 Part No. VDD7080 UPC 749173670640 Type Vextra Flat Diamond Grinding Disc 7", #80 grit, 7/8" arbor Max RPM 8,400 RPM Packaged Weight 1.15 lbs Commodity Code 6804.21.0000 Country of Origin Korea Vextra Flat Diamond Grinding Disc 7", #80 grit, 5/8"-11 arbor — VDD708H Part No. VDD708H UPC 749173670657 Type Vextra Flat Diamond Grinding Disc 7", #80 grit, 5/8"-11 arbor Max RPM 8,400 RPM Packaged Weight 1.25 lbs Commodity Code 6804.21.0000 Country of Origin Korea Common Specifications Property Detail Type Flat diamond grinding disc, sandwich construction with rubber damping Primary Materials Steel, stainless steel, non-ferrous metals; also stone, quartz, wood, rubber Grits Available #35 (coarse), #50 (medium), #80 (fine) Diameters Available 4-1/2", 5", 7" Arbors Available 7/8" or 5/8"-11 zinc hub Use High-speed angle grinder, sander, or polisher; dry or wet Country of Origin Korea Related & Companion Products Alpha® VFlex™ Flexible Diamond Sanding Disc Alpha® Vexcel™ Rigid Diamond Grinding Disc Alpha® Ecoguard™ G Dust Shroud FAQs How long does the Vextra disc last compared to conventional abrasives?Life depends on application and material, but users typically see 50–60× the life of conventional abrasive discs.Can I use the Vextra disc with water to keep dust down?Yes — the Vextra Flat Diamond Grinding Disc is designed to run wet as well as dry. Feed water at the disc face to suppress dust.How do I eliminate dust during grinding?Alpha offers the Ecoguard G retrofit dust shroud for most 4-1/2" and 5" industrial grinders. Combined with a HEPA vacuum, the Vextra runs virtually dust-free. Note: some metal powders are combustible — verify material safety before vacuum collection.What tools can I use with the Vextra disc?High-speed angle grinders, sanders and polishers. Use the tool's original flange and lock nut on 7/8"-arbor models, or thread the 5/8"-11 zinc-hub models directly onto the spindle.Does Alpha offer a square arbor for the Ecogrinder?A square arbor suitable for the Ecogrinder is available upon request.Which grit should I choose?#35 for aggressive stock removal (this listing). #50 for general-purpose grinding. #80 for finer finish work. Videos Vextra Flat Grinding Discs Documentation 📄 Vextra Grinding Disc Flyer 📄 SDS — Diamond Metal-Bonded Blades, Grinding Wheels & Core Bits ⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.