6A2 flat recessed grinding wheels 150x40x3x20x32 A B2-01 100% AC4 D 91

6A2 Diamond Grinding Wheel – Flat Recessed Type | FEPA D91 (80/63 μm)

6A2 flat recessed diamond grinding wheel for 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 rough stage.
Typical applications include:

• Initial grinding of carbide inserts and indexable tools
• Preparation of flat surfaces before micron sequence
• Grinding of technical glass and brittle materials

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

What it actually does:

Productive material removal with basic geometry control.
Establishes flatness and removes material before finer grinding stages.

Grain size (D91 ≈ 80/63 μm):

• High stock removal rate
• Typical Ra ~ 0.4–1.0 μm
• Leaves visible grinding marks

In practice:

This is a starting wheel for flat grinding.
Used before M63 → M40 → M25 sequence.
Focus is material removal and geometry setup.

Specification:

• Type: 6A2 (flat recessed)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D91 ≈ 80/63 μm (ANSI 170/200)
• 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
• Initial grinding

Do not use for:

• Fine finishing (use M63 → M10)
• Polishing
• Steel