1A1 straight grinding wheels 400x5x25x203 A B2-01 100% AC4 D 126

1A1 Diamond Grinding Wheel – FEPA D126 (125/100 μm) | AC4

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

What it actually does:

Aggressive material removal with low surface quality.
Used for initial shaping and bulk stock removal before finer grinding stages.

Grain size (D126 ≈ 125/100 μm):

Coarse diamond grit for heavy-duty grinding.

• Very high stock removal rate
• Typical Ra ~ 0.8–1.5 μm
• Leaves deep scratches

Stable in heavy grinding conditions, not sensitive to feed or depth.

In practice:

This is a roughing wheel / Semi-finishing.
Used as the first grinding step before D107 / D91.
Focus is maximum productivity, not surface finish.

Specification:

• Type: 1A1 (straight)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D126 ≈ 125/100 μm (ANSI 120/140)
• Concentration: 100%
• Body: P / S / Ap
  (Pressed / Steel / Aluplast)

Behavior:

• Maximum cutting aggressiveness
• High productivity
• Low surface quality
• Note: requires multiple follow-up steps

Body options:

• P: vibration damping, lighter
• 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 geometry shaping
• Pre-processing before D107 / D91

Do not use for:

• Finishing
• Polishing
• Steel