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Alpha Ceramica Vitrified Preparation Stage for Wet Granite Polishing

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  • Designed To Handle The Hard Job of Removing Saw and Grinding Marks
  • Ideal for The Bullnose or Profiled Edge
  • Fabricators Love The Aggressiveness, Ease of Use and Long Life
  • Excellent Results On A Consistent Basis
  • Available in Grits of 60, 150 and 300
  • Cost-Effective Investment

$ 71.79 $ 71.79
$ 71.79

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Documents
Ceramica How To Use.pdf Ceramica Vitrified Helpful Hints.pdf Vitrified Bond Diamond Polishing Disc Wet SDS.pdf

Alpha® Ceramica Vitrified Preparation-Stage Discs for Wet Granite Polishing

Alpha® Ceramica Vitrified discs are the aggressive preparation stage of the Ceramica polishing system. A compressed diamond-impregnated pellet in a vitrified plastic bond removes saw and grinding marks fast, protecting the resin discs that follow and extending their life. The discs are ideal for bullnosed and profiled edges, and work very well on all curved edges. Offered in 3", 4", and 5" diameters and #60, #150, and #300 grits — suitable for granite, marble, and porcelain when run wet at 4,000 RPM max.

Features

  • Aggressive preparation stage — removes saw & grinding marks fast
  • Compressed diamond-impregnated pellet in vitrified plastic bond
  • Ideal for bullnosed and profiled edges, plus all curved edges
  • Color-coded by grit: Blue (#60), Yellow (#150), Orange (#300)
  • Three diameters: 3", 4", 5"
  • Long life — about 3× faster material removal than resin discs
Part No. Size Grit Color Max RPM UPC
GP30060V 3" #60 Blue 4,000 749173520167
GP30150V 3" #150 Yellow 4,000 749173520181
GP30300V 3" #300 Orange 4,000 749173510014
GP40060V 4" #60 Blue 4,000 749173520310
GP40150V 4" #150 Yellow 4,000 749173520334
GP40300V 4" #300 Orange 4,000 749173510021
GP50060V 5" #60 Blue 4,000 749173520464
GP50150V 5" #150 Yellow 4,000 749173520488
GP50300V 5" #300 Orange 4,000 749173510038
  1. Mount a backer pad on a central water-feed polisher such as the Alpha® AIR-680 or VSP-320. Use a flexible backer for curves/bullnose, a rigid backer for flat or straight edges.
  2. Start with #60 (Blue) to break the surface and remove saw/grinding marks. For tight inside corners or ogees, switch to a Ceramica Metal disc — vitrified discs work best on convex and broad concave shapes.
  3. Step up to #150 (Yellow) and then #300 (Orange) to bridge into the resin polishing sequence.
  4. Keep center water flowing at all times — Ceramica Vitrified is wet-use only.
  5. Polish at or below 4,000 RPM. Higher speeds will burn the discs.
  6. Hand off to the Ceramica Resin sequence (#150 → #3000), then finish with Ceramica Buff. Bond types can be mixed freely as long as the grit sequence is respected.
Blue (#60 grit) — 3" (76 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP30060V
Part No. GP30060V
UPC 749173520167
Size 3" (76 mm)
Type Wet Vitrified Preparation Disc
Color Blue (#60 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Aggressive removal of saw & grinding marks — preparation stage
Packaged Weight 0.10 lbs
Package Dimensions 3.25" x 3.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Yellow (#150 grit) — 3" (76 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP30150V
Part No. GP30150V
UPC 749173520181
Size 3" (76 mm)
Type Wet Vitrified Preparation Disc
Color Yellow (#150 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Pre-polish bridging between shaping and the resin sequence
Packaged Weight 0.10 lbs
Package Dimensions 3.25" x 3.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Orange (#300 grit) — 3" (76 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP30300V
Part No. GP30300V
UPC 749173510014
Size 3" (76 mm)
Type Wet Vitrified Preparation Disc
Color Orange (#300 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Pre-polish bridging between shaping and the resin sequence
Packaged Weight 0.10 lbs
Package Dimensions 3.25" x 3.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Blue (#60 grit) — 4" (102 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP40060V
Part No. GP40060V
UPC 749173520310
Size 4" (102 mm)
Type Wet Vitrified Preparation Disc
Color Blue (#60 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Aggressive removal of saw & grinding marks — preparation stage
Packaged Weight 0.10 lbs
Package Dimensions 4.25" x 4.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Yellow (#150 grit) — 4" (102 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP40150V
Part No. GP40150V
UPC 749173520334
Size 4" (102 mm)
Type Wet Vitrified Preparation Disc
Color Yellow (#150 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Pre-polish bridging between shaping and the resin sequence
Packaged Weight 0.10 lbs
Package Dimensions 4.25" x 4.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Orange (#300 grit) — 4" (102 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP40300V
Part No. GP40300V
UPC 749173510021
Size 4" (102 mm)
Type Wet Vitrified Preparation Disc
Color Orange (#300 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Pre-polish bridging between shaping and the resin sequence
Packaged Weight 0.10 lbs
Package Dimensions 4.25" x 4.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Blue (#60 grit) — 5" (127 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP50060V
Part No. GP50060V
UPC 749173520464
Size 5" (127 mm)
Type Wet Vitrified Preparation Disc
Color Blue (#60 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Aggressive removal of saw & grinding marks — preparation stage
Packaged Weight 0.20 lbs
Package Dimensions 5.25" x 5.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Yellow (#150 grit) — 5" (127 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP50150V
Part No. GP50150V
UPC 749173520488
Size 5" (127 mm)
Type Wet Vitrified Preparation Disc
Color Yellow (#150 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Pre-polish bridging between shaping and the resin sequence
Packaged Weight 0.20 lbs
Package Dimensions 5.25" x 5.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Orange (#300 grit) — 5" (127 mm) — Hook & Loop — Wet Vitrified Preparation Disc — GP50300V
Part No. GP50300V
UPC 749173510038
Size 5" (127 mm)
Type Wet Vitrified Preparation Disc
Color Orange (#300 grit)
Attachment Hook & Loop
Max RPM 4,000 RPM
Recommended For Pre-polish bridging between shaping and the resin sequence
Packaged Weight 0.20 lbs
Package Dimensions 5.25" x 5.25" x 0.25"
Commodity Code 6804.21.0000
Country of Origin Japan
Property Detail
Application Wet preparation-stage polishing on granite, marble, porcelain
Bond / Construction Compressed diamond-impregnated pellet, vitrified plastic bond
Attachment Hook & loop
Max RPM 4,000
Sizes Offered 3 in (76 mm), 4 in (102 mm), 5 in (127 mm)
Grit Sequence #60 (Blue), #150 (Yellow), #300 (Orange)
Water Center water-feed required (wet-use only)
Removal Rate ~3× faster than resin discs at the same grit
Best On Bullnose, profiled, and convex/broad concave edges
For Tight Inside Curves Use Alpha® Ceramica Metal discs instead
Recommended Tools Alpha® AIR-680 pneumatic polisher, VSP-320 variable-speed polisher
Follow-Up Ceramica Resin (#150→#3000), then Ceramica Buff for final gloss
What materials can I use Ceramica Vitrified on?

Ceramica Vitrified is designed for all natural stones — granite, marble, and porcelain.

What sizes are available?

Ceramica Vitrified is offered in 3", 4", and 5" diameters.

What does the hook & loop color tell me?

Color codes the grit: Blue = #60, Yellow = #150, Orange = #300.

What is the maximum safe RPM?

Ceramica Vitrified should not exceed 4,000 RPM.

Which polishers does Alpha® recommend?

Central water-feed polishers such as the Alpha® AIR-680 and VSP-320.

What makes Ceramica Vitrified so aggressive?

The compressed diamond-impregnated pellet design exposes fresh diamond as the disc wears, delivering aggressive and long-lasting cutting action.

Can I use Vitrified discs in tight inside curves?

For tight inside areas like internal corners and ogees, use Ceramica Metal discs instead. Vitrified discs are best on convex and broad concave surfaces.

Vitrified vs. Metal — which when?

Vitrified is the most aggressive option and is suited to convex surfaces. Metal offers extra flexibility for concave and convex profiles — especially tight inside curves.

Can I use Ceramica Vitrified dry?

No — Ceramica Vitrified is wet-use only. Always run with center water-feed.

Can I mix Vitrified and Resin in the same sequence?

Yes. Bond types can be mixed freely as long as you respect the grit sequence (low to high).

Can I use Ceramica Vitrified on concrete?

Yes — it works well for breaking the surface of cured concrete that needs smoothing.

Flexible or rigid backer pad?

Flexible backer pads for contoured/curved surfaces; rigid backer pads for flat edges.

No product-specific videos are currently available from the manufacturer or DST.

⚠ WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov. Always wear appropriate PPE.

Specifications

Size 3", 4", 5"
Grit #60, #150, #300