4B2 dish grinding wheels 125x6x2x10x20x32 A B2-01 50% AC4 D 107

4B2 Diamond Grinding Wheel – Dish Type | FEPA D107 (100/80 μm)

4B2 dish grinding wheel for rough sharpening and preparation of tool face surfaces.
Designed for carbide and other hard brittle materials.

Where it is actually used:

Used for face grinding and sharpening with reduced grinding forces.
Typical applications include:

• Face grinding on machines with limited rigidity
• Sharpening of long or thin tools
• Operations sensitive to heat and vibration

The dish shape provides accurate contact on flat and angular surfaces.

What it actually does:

Controlled material removal with smoother cutting behavior.
Less aggressive than 100% concentration, improving stability and reducing thermal load.

Grain size (D107 ≈ 100/80 μm):

• High stock removal rate
• Typical Ra ~ 0.6–1.2 μm
• Prepares surface for D91 → M63 sequence

Concentration 50% means:

• Lower grinding forces
• More open structure → excellent chip evacuation
• Reduced heat generation
• Smoother and more stable cutting
• Trade-off: shorter tool life vs 100%

In practice:

This is a low-load roughing wheel.
Used when machine rigidity is limited or vibration is present.
Ideal for delicate tools and unstable setups.

Specification:

• Type: 4B2 (dish)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D107 ≈ 100/80 μm (ANSI 140/170)
• Concentration: 50%
• Body: P / A / S / Ap
  (Pressed / Aluminum / Steel / Aluplast)

Body options:

• Pressed: lighter weight, vibration damping, better surface finish
• Aluminum: lightweight with good rigidity, general-purpose solution
• Steel: maximum rigidity for heavy-duty grinding
• Aluplast: balanced weight and rigidity

Why this concentration:

• Reduced cutting forces
• Better control in unstable conditions
• Lower risk of burning

Use for:

• Face grinding
• Tool sharpening
• Low-load rough grinding

Do not use for:

• Maximum productivity grinding
• Finishing operations
• High-pressure grinding