6A2 flat recessed grinding wheels 70x6x3x18x20 A B2-01 100% ACH M 20

6A2 Diamond Grinding Wheel – Flat Recessed Type | FEPA M20 (20/14 μm)

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

Where it is actually used:

Used for precision sharpening of flat surfaces and inserts at initial finishing stage.
Typical applications include:

• Sharpening of carbide inserts and indexable tools
• Face preparation of small flat tool surfaces
• Grinding of technical glass and brittle materials

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

What it actually does:

Controlled material removal with initial surface refinement.
Removes marks from previous operations and establishes stable geometry.

Grain size (M20 ≈ 20/14 μm):

• Moderate stock removal with controlled finish
• Typical Ra ~ 0.08–0.20 μm
• Prepares surface for M16 → M10 sequence

In practice:

This is a pre-finishing wheel.
Used before M16 and M10.
Focus is geometry preparation and process stability.

Specification:

• Type: 6A2 (flat recessed)
• Abrasive: Synthetic diamond (АСН)
• Grit: FEPA M20 ≈ 20/14 μm (ANSI ~1000)
• 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
• Pre-finishing

Do not use for:

• Heavy rough grinding
• Final polishing (use M10)
• Steel