6A2 flat recessed grinding wheels 70x6x3x18x20 A B2-01 50% AC4 D 126

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

6A2 flat recessed diamond grinding wheel for controlled heavy rough grinding 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 under reduced load conditions.
Typical applications include:

• Heavy rough grinding on low-rigidity machines
• Sharpening of thin or vibration-prone tools
• Operations with limited spindle power or heat sensitivity

What it actually does:

High material removal with smoother and more stable cutting behavior.
Reduces grinding forces while maintaining productivity.

Grain size (D126 ≈ 125/100 μm):

• Very high stock removal rate
• Typical Ra ~ 0.8–1.5 μm
• Prepares surface for D107 → D91 sequence

Concentration 50% means:

• Lower grinding forces
• More open structure → efficient chip evacuation
• Reduced heat generation
• Smoother, more stable grinding process
• Trade-off: reduced tool life vs higher concentrations

In practice:

This is a low-load heavy roughing wheel.
Used when aggressive grinding is required but machine stability is limited.
Balances material removal and process control.

Specification:

• Type: 6A2 (flat recessed)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D126 ≈ 125/100 μm (ANSI 120/140)
• Concentration: 50%
• Body: P / A / S / Ap
  (Pressed / Aluminum / Steel / Aluplast)

Body options:

• Pressed: lighter weight, vibration damping, better surface finish
• Aluminum: lightweight with good rigidity
• Steel: maximum rigidity for heavy-duty grinding
• Aluplast: balanced weight and rigidity

Why 50% concentration:

• Reduced cutting forces
• Improved stability in difficult setups
• Lower risk of thermal damage

Use for:

• Carbide inserts
• Precision tools
• Technical glass
• Controlled heavy rough grinding

Do not use for:

• Maximum productivity grinding
• Finishing operations
• Steel