1A1 straight grinding wheels 300x5x40x127 P B2-01 100% AC4 D 107

1A1 Diamond Grinding Wheel – FEPA D107 (100/80 μm) | AC4

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

What it actually does:

Fast material removal with better control than coarser grits.
Used for shaping and transition to finer grinding stages.

Grain size (D107 ≈ 100/80 μm):

Coarse diamond grit for high productivity grinding.

• High stock removal rate
• Typical Ra ~ 0.6–1.2 μm
• Leaves visible grinding marks

More controlled than D126/D151, but still far from finishing.

In practice:

This is a roughing / early fine grinding wheel.
Used after very coarse grits or as a starting point for carbide grinding.
Prepares surface for D91 → D46 → M40 sequence.

Specification:

• Type: 1A1 (straight)
• Abrasive: Synthetic diamond (AC4)
• Grit: FEPA D107 ≈ 100/80 μm (ANSI 140/170)
• Concentration: 100%
• Body: P / S / Ap
  (Pressed / Steel / Aluplast)

Behavior:

• Aggressive cutting
• High productivity
• Stable grinding process
• Note: requires follow-up finishing

Body options:

• P: vibration damping, lighter
• S: maximum rigidity for heavy load
• 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
• Stock removal
• Initial geometry shaping
• Pre-processing before D91 / D46

Do not use for:

• Finishing
• Polishing
• Steel