100mm Zirconium Flap Disc (4") — Abracs Type 29

Abracs 100mm zirconium flap disc for grinding, blending and finishing steel in one pass on a 4 inch angle grinder. Overlapping zirconium flaps wear away as you work to expose fresh abrasive, so the disc cuts consistently from new to worn rather than glazing over. Where a grinding disc removes material and leaves you to finish afterwards, a flap disc takes the weld down and leaves a blended surface in the same operation.

Choosing a grit
40 (coarse) for fast stock removal, knocking down heavy welds and rough edges. 60 (medium) is the general-purpose choice, balancing removal against finish. 80 (fine) for blending, cleaning up and final finishing before paint or polish.

Size
100mm x 16mm bore (4")

Brand
Abracs

Abrasive
Zirconium

Type
F29 conical flap disc

Working angle
Best used at 15° to 25° to the surface — the conical face is designed for contours and edges

Backing
Lightweight fibreglass, which absorbs vibration and adds strength

Standard
Manufactured to O.S.A. safety standards, EN 13743

Maximum speed
15,300 RPM / 80 m/s

Materials
Stainless steel, mild steel, sheet metal and high grade steel

Uses
Weld blending and dressing, deburring, edge chamfering, removing rust, scale and old paint, and surface finishing before coating.

Fits
16mm bore. Check your grinder takes a 16mm arbor before ordering, as some 100mm grinders are fitted for 22mm discs instead.

Also known as 4 inch flap disc, type 29 flap disc, zirconium flap wheel, sanding flap disc or grinding flap disc.