1A1 straight grinding wheels 200x3x20x32 P B2-01 100% ACH M 40

1A1 Diamond Grinding Wheel – FEPA M40 (40/28 μm) | B2-01 Bond

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

What it actually does:

Efficient material removal with initial surface refinement.
Less aggressive than D46, but significantly more productive than micron finishing wheels.

Grain size (M40 ≈ 40/28 μm):

Transition grit between standard diamond grains and micron range.

• Good material removal with improved surface vs D46
• Typical Ra ~ 0.15–0.30 μm
• Prepares surface for M25/M20 stages

More stable and less sensitive than finer grits.

Bond (B2-01):

• Self-sharpening behavior
• Controlled heat generation
• Stable cutting process
• Suitable for semi-rough and semi-finish grinding

In practice:

This is a transition wheel.
Used after rough grinding (D64/D46) to stabilize geometry before M25/M20.
Can replace D46 when better surface quality is required without losing too much productivity.

Specification:

• Type: 1A1 (straight)
• Abrasive: Synthetic diamond (АСН)
• Grit: FEPA M40 ≈ 40/28 μm
• Bond: B2-01 (resin-based)
• Concentration: 100%
• Body: P (pressed composite)
  (Aluminum or Steel on request)

Concentration 100%:

• High cutting stability
• Consistent stock removal
• Long wheel life
• Note: can load under excessive pressure

Body type (P):

• Lightweight design
• Vibration damping
• Improves surface stability
• Limit: lower rigidity vs steel

Use for:

• Carbide semi-rough grinding
• Geometry preparation
• Transition to M25/M20
• Ceramics / glass

Do not use for:

• Steel
• Heavy roughing (better use D64/D91)
• Unstable grinding conditions