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Alpha PVA VP Style 4-1/2" Dry Polishing Discs
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At a Glance
Quick Decision Guide
Disc Size
4-1/2"
Grit
40
Finish
Extra Coarse
Maximum RPM
13,200
Arbor
5/8"-11
Thickness
3/8"
Polishing Method
Dry
Quantity
1 Disc
Why Choose This Product
Key Benefits
Dry Polishing
Polishes and refines surfaces without requiring water
Broad Material Use
Works on stone, stainless steel, aluminum, ceramic, wood and other metals
Non-Clogging Design
4-1/2" discs resist clogging during polishing and material removal
Five Grit Options
Progresses from 40 extra coarse through 600 extra fine
High-Speed Performance
Rated for speeds up to 13,200 RPM
Direct Attachment
5/8"-11 disposable zinc hub fits compatible power tools
Product Information
Product Details
Specifications
Brand
Alpha®
Part Number
SPVA45WH
UPC
749173040344
Product Type
PVA Polishing Disc
Size
4-1/2"
Thickness
3/8"
Grit
40
Finish
Extra Coarse
Abrasive
Silicon Carbide
Bond
Polyvinyl Alcohol
Arbor
5/8"-11
Hub Type
Disposable Zinc Hub
Maximum RPM
13,200
Polishing Method
Dry
Compatible Tools
Polishers, Sanders & Grinders
Suitable Materials
Softer Stone, Marble, Limestone, Travertine, Granite, Aluminum & Stainless Steel
Additional Applications
Ceramic, Wood, Other Metals, Paint, Rust & Coating Removal
Clog Resistance
Designed Not to Clog
Quantity
1 Disc
About This Product
Dry Polishing for Stone and Metal Surfaces
Alpha® PVA VP Style Polishing Discs are high-speed dry polishing discs designed for softer stone, marble, limestone, travertine, granite, aluminum, and stainless steel. On stainless steel, the system can produce a semi-mirror finish while providing fast material refinement without requiring water.
Silicon Carbide Abrasive with PVA Bond
Each disc combines silicon carbide abrasive with a polyvinyl alcohol bond for fast polishing and long service life. The 4-1/2" discs are designed to resist clogging and can also be used for applications such as paint, rust, and coating removal.
Five Grits from Extra Coarse to Extra Fine
The 4-1/2" PVA VP Style range includes 40, 80, 220, 400, and 600 grit options, progressing from extra coarse through extra fine. The grit range supports material removal, surface refinement, and progressive polishing across stone, metal, ceramic, wood, and other compatible materials.
5/8"-11 Hub for High-Speed Power Tools
These variants feature a 5/8"-11 disposable zinc hub for direct attachment to compatible polishers, sanders, and grinders. Each 4-1/2" disc is 3/8" thick and rated for a maximum speed of 13,200 RPM.
Product Resources
Documentation & Downloads
Common Questions
Frequently Asked Questions
What materials can Alpha PVA VP Style Polishing Discs be used on?
The discs are designed for softer stone, marble, limestone, travertine, granite, aluminum, and stainless steel. Alpha also lists ceramic, wood, and other metals as additional applications.
Can PVA VP Style discs be used for dry polishing?
Yes. The PVA VP system is designed as a high-speed dry polishing system, so water is not required during polishing.
What grit options are available?
The 4-1/2" discs are available in 40 grit Extra Coarse, 80 grit Coarse, 220 grit Medium, 400 grit Fine, and 600 grit Extra Fine.
What tools are compatible with these polishing discs?
They can be used with compatible polishers, sanders, and grinders. These variants use a 5/8"-11 disposable zinc hub.
What is the maximum RPM for the 4-1/2" discs?
Each 4-1/2" PVA VP Style disc is rated for a maximum speed of 13,200 RPM.
Can these discs remove paint, rust, and coatings?
Yes. Alpha lists paint, rust, and coating removal among the additional applications for PVA VP discs, and the 4-1/2" discs are designed to resist clogging.
Can PVA VP discs polish stainless steel?
Yes. The PVA VP polishing system can be used on stainless steel and is designed to produce a semi-mirror finish through progressive polishing.