1A1 straight grinding wheels 300x5x40x51 P B2-01 100% AC4 D 91

1A1 Diamond Grinding Wheel – FEPA D91 (80/63 μm) | AC4

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

What it actually does:

Efficient material removal with acceptable surface quality.
Positioned between rough grinding and semi-finish operations.

Grain size (D91 ≈ 80/63 μm):

Medium-coarse diamond grit for stable grinding.

• Higher removal rate with better surface than D126/D151
• Typical Ra ~ 0.3–0.8 μm
• Prepares surface for D46 / M40 stages

Good balance between productivity and control.

In practice:

This is a fine grinding wheel in roughing range.
Used when you need controlled removal without deep scratches.
Often replaces coarser grits to reduce finishing time.

Specification:

• Type: 1A1 (straight)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D91 ≈ 80/63 μm (ANSI 170/200)
• Concentration: 100%
• Body: P / S / Ap
  (Pressed / Steel / Aluplast)

Behavior:

• Stable cutting process
• Controlled material removal
• Reduced scratch depth vs coarse grits
• Note: still requires finishing steps

Body options:

• P: vibration damping, better surface
• S: maximum rigidity
• Ap: balanced performance

Dimensions (D × X × T × H):

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

Use for:

• Carbide fine grinding
• Controlled stock removal
• Preparation before D46 / M40
• Ceramics / glass

Do not use for:

• Polishing
• Final finishing
• Steel