1A1 straight grinding wheels 200x3x20x32 P B2-01 100% AC4 D 151

1A1 Diamond Grinding Wheel – FEPA D151 (150/125 μm) | AC4

Straight diamond wheel (1A1) for heavy rough grinding and maximum stock removal.
Designed for carbide, ceramics and other hard brittle materials.

What it actually does:

Very aggressive material removal with minimal surface quality.
Used for initial shaping and removing large amounts of material quickly.

Grain size (D151 ≈ 150/125 μm):

Extra coarse diamond grit for maximum productivity.

• Maximum stock removal rate
• Typical Ra ~ 1.0–2.0 μm
• Leaves deep and visible scratches

Stable under heavy grinding conditions.

In practice:

This is a primary roughing wheel.
Used as the first step in grinding sequence before D126 → D107 → D91.
Focus is speed and material removal, not surface finish.

Specification:

• Type: 1A1 (straight)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D151 ≈ 150/125 μm (ANSI 100/120)
• Concentration: 100%
• Body: P / S / Ap
  (Pressed / Steel / Aluplast)

Behavior:

• Maximum cutting aggressiveness
• Very high productivity
• Lowest surface quality
• Note: requires multiple follow-up steps

Body options:

• P: lighter, better vibration damping
• S: maximum rigidity for heavy grinding
• Ap: balanced performance

Dimensions (D × X × T × H):

• D – outer diameter
• X – diamond layer thickness
• T – total thickness
• H – bore diameter

Use for:

• Carbide rough grinding
• Heavy stock removal
• Initial shaping
• Pre-processing before D126 / D107

Do not use for:

• Finishing
• Polishing
• Steel