Optical Glass Pellets
Diamond Pellets for K9 (BK7) Glass
The workhorse pellet for K9 and BK7 borosilicate optical…
View detailsDiamond Pellets for Sapphire Glass
Diamond pellets formulated for sapphire, used for rough and fine grinding of watch crystals, windows and substrates. The resin bond keeps cutting forces and grinding heat low, reducing edge chipping and subsurface damage.
Optical Glass Pellets
Diamond pellets formulated for sapphire, used for rough and fine grinding of watch crystals, windows and substrates. The resin bond keeps cutting forces and grinding heat low, reducing edge chipping and subsurface damage.
- Typical use
- Sapphire and corundum · hard, brittle stock
- Customisation
- Sapphire is sensitive to chipping. Tell us the crystal orientation, stock to remove and target roughness, and we will adjust grit and concentration accordingly.
- MOQ & lead time
- Standard sizes from stock or 3–7 working days. Custom parts 7–15 working days after drawing approval. Confirmed in writing.
Spec
Typical specifications
| Parameter | Typical range |
|---|---|
| Materials | Sapphire, corundum, alumina ceramics and similar hard-brittle materials |
| Standard grits | W7, W14, W28 |
| Bond | Resin |
| Common diameter | φ4 – φ30 mm |
| Thickness | 2 – 10 mm |
| Machines | Fine grinding machines, lapping plates, manual stations |
| Customisation | Diameter, thickness, grit and concentration matched to your process |
Typical ranges to help you judge fit quickly. The confirmed drawing or sealed sample governs.
Use
Applications
- Grinding of sapphire watch crystals and camera windows
- Fine grinding and thinning of sapphire substrates
- Corundum and alumina ceramic parts
- LED substrate grinding operations
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View detailsNot the right size? It can be made to drawing.
Diameter, thickness, grit, concentration, bond and cavity dimensions are all variables. Send a drawing, a sample or your process data and we will assess before quoting.