Weha makes six distinct cup wheel designs — and choosing the wrong one costs you time, money, and surface quality. This guide breaks down every Weha cup wheel by what it does, when to use it, and how it fits into your grinding sequence so you can buy with confidence.
The Six Weha Cup Wheels at a Glance
| Cup Wheel | Bond Type | Best For | Grits | Wet/Dry |
|---|---|---|---|---|
| Flap Diamond | Diamond flap | Polish removal, honed/leathered prep | 60, 120 | Both |
| Resin Filled | Resin | Controlled intermediate grinding | Coarse, Medium, Fine | Both |
| Blitz Resin Filled | High-concentration resin | High-volume production grinding | Coarse, Medium, Fine | Both |
| Pitbull Hybrid | Hybrid resin | Chip-free shaping, bevel & radius work | 30, 50, 100 | Both |
| Blitz Cluster | Cluster segment | Aggressive stock removal, epoxy/mesh removal | 50/60 | Both |
| Rubber Diamond | Rubber-isolated | Contoured edges, fatigue reduction | Coarse, Medium | Both |
The Standard Grinding Sequence
- Aggressive stock removal — Blitz Cluster or Pitbull 30 grit
- Shaping and polish removal — Flap Diamond (60 grit) or Pitbull (50 grit)
- Intermediate grinding — Resin Filled or Blitz Resin Filled (Coarse → Medium → Fine)
- Finish grinding on contours — Rubber Diamond (Coarse → Medium)
- Polishing — Polishing pads
Weha Flap Diamond Cup Wheel — Best for Polish Removal & Honed Finish Prep
The Weha 4" Flap Diamond Cup Wheel is the go-to for removing polish from granite, marble, and engineered stone surfaces. 60 grit for heavy polish removal and surface leveling. 120 grit for lighter refinement before polishing pads.
Weha Resin Filled Diamond Cup Wheel — Best for Controlled Intermediate Grinding
The Weha 4" Resin Filled Diamond Cup Wheel is the workhorse of the grinding sequence — smooth, chip-free material removal with consistent surface control. Available in Coarse, Medium, and Fine.
Weha Blitz Resin Filled Cup Wheel — Best for High-Volume Production Shops
The Weha Blitz 4" Resin Filled does the same job as the standard Resin Filled but with higher diamond concentration and a circular segment pattern for faster cutting and longer service life.
Weha Pitbull Hybrid Resin Cup Wheel — Best for Chip-Free Shaping & Bevel Work
The Weha Pitbull Hybrid fills the gap between aggressive metal-bond grinding and gentle resin polishing. 30 grit for heaviest stock removal. 50 grit for general shaping. 100 grit for finer shaping and honed finish creation.
Weha Blitz Cluster Cup Wheel — Best for Aggressive Stock Removal
The Weha Blitz Cluster is the most aggressive cup wheel in the lineup — built for fiberglass mesh removal, epoxy removal, and fast edge shaping. Available in 4" and 5" at 50/60 grit.
Weha Rubber Diamond Cup Wheel — Best for Contoured Edges & Fatigue Reduction
The Weha 4" Rubber Diamond Cup Wheel uses a rubber-isolated diamond matrix that flexes to follow contoured edges and reduces operator fatigue during extended grinding runs.
Quick Decision Guide
- Removing polish, creating honed/leathered finish → Flap Diamond
- Intermediate grinding, everyday fabrication → Resin Filled
- High-volume production grinding → Blitz Resin Filled
- Chip-free shaping, bevel & radius work → Pitbull Hybrid
- Aggressive stock removal, mesh/epoxy removal → Blitz Cluster
- Contoured edges, fatigue reduction → Rubber Diamond
Pro Tool Haus is a certified distributor of Weha products. Questions about which cup wheel is right for your application? Contact us directly.