6A2 flat recessed grinding wheels 70x6x3x18x20 A B2-01 100% AC4 D 151

6A2 Diamond Grinding Wheel – Flat Recessed Type | FEPA D151 (150/125 μm)

6A2 flat recessed diamond grinding wheel for extreme rough sharpening and preparation of flat surfaces.
Designed for carbide inserts, cutting tools and technical glass.

Where it is actually used:

Used for flat surface grinding and insert sharpening at early stage where maximum stock removal is required.
Typical applications include:

• Initial grinding of carbide inserts from solid or after heavy wear
• Heavy reconditioning of flat tool surfaces
• Preparation before D126 → D107 sequence

The recessed design provides clearance and stable access to flat surfaces.

What it actually does:

Extremely aggressive material removal with minimal surface control.
Rapidly removes large volumes of material and establishes initial flat geometry.

Grain size (D151 ≈ 150/125 μm):

• Extreme stock removal rate
• Typical Ra ~ 1.0–2.0 μm
• Leaves deep and pronounced grinding marks

In practice:

This is an extreme roughing wheel.
Used before D126 → D107 → D91 sequence.
Focus is maximum productivity, not surface quality.

Specification:

• Type: 6A2 (flat recessed)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D151 ≈ 150/125 μm (ANSI 100/120)
• Concentration: 100%
• 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 shape:

• Stable flat surface grinding
• Clearance for inserts and small parts
• Reduced interference during sharpening

Use for:

• Carbide inserts
• Precision tools
• Technical glass
• Extreme rough grinding

Do not use for:

• Finishing operations (use D91 → M10)
• Polishing
• Steel