Guidelines for choosing our products

The grinding wheel body: resin or metal?

Using resin‑based binders and bodies represents a technological leap. Unlike traditional rigid aluminum or metal supports, resin provides a dynamic behavior that optimizes contact between the abrasive surface and the workpiece.

The resin body:

• Dampens vibrations
• Reduces weight by up to 60 % compared with metal
• Decreases wear on spindle bearings
• Lowers overheating of the workpiece
• Its elasticity allows for uniform contact pressure
• Requires less power for start‑up and braking

Abrasive Belt: Diamond or Borazon?

Diamond: the best abrasive for material removal on hard and difficult‑to‑machine materials. Ideal for machining carbide, tungsten‑carbide (widia), ceramics, glass, graphite, and ferritic steels.

Borazon (cubic boron nitride – CBN): has a hardness lower than that of diamond but superior thermal stability. It is the best abrasive for machining steel and cast iron.

Resin‑based binder

The resin‑based binder holds the abrasive grains together. It works well for both dry and wet machining, depending on the grain size. It can be formulated to be soft, hard, or anywhere in between.

A high‑quality binder ensures:

• Perfect grain distribution to eliminate imbalance and vibration
• High resistance to thermal deformation
• Stability when in contact with oils and coolants
• Ability to absorb micro‑impacts

Concentration

The amount, measured in carats, of diamond or borazon (CBN) contained in the abrasive belt.

The most commonly used concentrations are C50 (low), C75 (medium), and C100 or C125 (high).

Choosing the proper concentration allows for much higher material‑removal rates per unit time, improved surface roughness, and yields that far exceed average performance.

Grain size

The grain of the wheel—the size of the diamonds or borazon (CBN) present in the tool’s working belt—determines the specific material removal, finishing, or machining that can be achieved on the target surface.

Here’s a guide to typical applications:

• B25 – B30  polishing and lapping
• B40   fine finishing and polishing
• B46   finishing
• B64 – B76  low material removal
• B91 – B107   medium material removal
• B126  high material removal
• B252  maximum material removal

Shape and size

The shape of the body, the position of the abrasive layer, and its geometry all contribute to effective machining. Diabor manufactures wheels according to drawings or customer specifications, offering a wide range of diameters, thicknesses, and belts. Contact us for a free consultation.