6A2 flat recessed grinding wheels 150x40x3x20x32 A B2-01 100% ACH M 40

6A2 Diamond Grinding Wheel – Flat Recessed Type | FEPA M40 (40/28 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 transition stage between rough and finishing.
Typical applications include:

• Face grinding of carbide inserts after rough grinding
• Preparation of flat tool 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:

Moderate material removal with initial surface stabilization.
Removes marks from D91 / D107 and prepares surface for finishing sequence.

Grain size (M40 ≈ 40/28 μm):

• Moderate stock removal
• Typical Ra ~ 0.20–0.40 μm
• Transition step before M25 → M20 sequence

In practice:

This is a transition wheel.
Used after rough grinding and before M25.
Focus is stabilizing geometry before finishing.

Specification:

• Type: 6A2 (flat recessed)
• Abrasive: Synthetic diamond (АСН)
• Grit: FEPA M40 ≈ 40/28 μm (ANSI ~400–500)
• 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
• Transition grinding

Do not use for:

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