T27 and T29 difference

1. T27 (Flat Shape) —— Flat-Shaped Blades

Shape: Completely flat, polished surface.

Optimal polishing angle: 0°–15°.

Advantages:

Smoothness: Due to the large contact area with the workpiece, it is less likely to leave “pits” or scratches on the surface.

Finishing Tool: Best suited for fine polishing of large flat surfaces, surface cleaning, and weld bead smoothing.

Disadvantages: Material removal rate is slower than that of the T29; not well-suited for cutting heavy metal edges.

2. T29 (Conical/Angled Shape) —— Conical/Angled Flap

Shape: The flap is angled toward the center of the backing plate, resembling a “shallow bowl.”

Optimal grinding angle: 15°–35°.

Advantages:

High Aggressiveness: This angled design allows the abrasive to concentrate its action on the workpiece, resulting in extremely fast material removal rates.

High Efficiency: Suitable for heavy grinding, edge trimming, and removing thick weld beads.

Wider Contact Area: Makes it easier to control the grinding point on curved or irregularly shaped parts.

Disadvantages: If the operator's technique is unsteady, it can easily leave uneven marks on flat surfaces.

II. Product Selection for Trade: How Should Customers Choose?

You can guide customers based on their specific working conditions:

III. Summary and Recommendations

The T29 is currently the best-selling model because it is more durable, highly efficient, and most workers prefer this ''quick and easy'' option.

The T27, on the other hand, is a staple in high-end factories, used for the final leveling step to achieve the ultimate in visual perfection.