6A2 flat recessed grinding wheels 70x6x3x13x20 A B2-01 100% AC4 D 126

6A2 Diamond Grinding Wheel – Flat Recessed Type | FEPA D126 (125/100 μm)

6A2 flat recessed diamond grinding wheel for heavy 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 where high stock removal is required.
Typical applications include:

• Initial grinding of carbide inserts from solid or after heavy wear
• Preparation of flat surfaces before D107 → D91 sequence
• Grinding of technical glass and brittle materials

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

What it actually does:

Very high material removal with basic geometry formation.
Quickly removes large volumes of material and establishes flat reference surface.

Grain size (D126 ≈ 125/100 μm):

• Very high stock removal rate
• Typical Ra ~ 0.8–1.5 μm
• Leaves deep and aggressive grinding marks

In practice:

This is a heavy roughing wheel.
Used before D107 → D91 → M63 sequence.
Focus is maximum material removal and geometry setup.

Specification:

• Type: 6A2 (flat recessed)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D126 ≈ 125/100 μm (ANSI 120/140)
• 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
• Heavy rough grinding

Do not use for:

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