The bond holds the diamond grains in place. Three main types are used in diamond grinding wheels: resin, vitrified, and metal. Here’s what goes into each.

Resin Bond

• Base: resin material
• Added: metals and metal oxide powder
• Plus: conventional abrasive powder

Vitrified Bond

More complex than resin. Built from three raw material groups:

• Plasticity materials — loess, clay, bentonite
• Barren materials — fluorite, quartz
• Accelerating melting materials — borax glass, talc, feldspar

Metal Bond

• Base: metal powder or alloy powder
• No resin or ceramic filler involved

Comparison Table

Type	Bond Feature	Grinding Behavior	Applications
Resin Bond	Good elasticity, moldable into complex shapes, good polishing performance. Poor heat resistance, poor acid/alkali resistance, weaker grain retention.	Good self-sharpening, resists loading, high efficiency, low grinding temperature and roughness.	Tungsten carbide, PCD, PCBN tools, PDC, optical glass polishing
Vitrified Bond	Good shape retention, chemically stable, heat/water/oil/acid/alkali resistant, strong grain holding.	Longer life than resin, sharp and efficient, resists heat and loading, easy to control accuracy, easy to dress.	PCD and PCBN tools, tungsten carbide, engineering ceramics
Metal Bond — Bronze	High strength, tough, durable, strong grain holding, poor self-sharpening.	High wear resistance, handles heavy loads, but easy to load up and hard to dress.	Glass, ceramic, stone
Metal Bond — Electroplated	Thin single abrasive layer, high grain density, sharp cutting edge.	No dressing needed, but no re-dressing possible; shorter life.	Complex geometries, profiled abrasives

Choosing a bond isn’t just about the material you’re grinding — it’s about balancing wheel life, precision, and how much dressing your process can tolerate.

Need help picking a bond for your application? Reach out to ZY Industrial at tanya@zyindustrial.com.