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5 inch radial flap disc with zirconia alumina flaps on fiberglass backing, 40 grit coarse grade, 7/8 inch unthreaded center hole

Pferd

Pferd Z SGP CURVE Flap Disc 5 in 40 Grit 12200 RPM

SKU CH-R621-9AW6Q

A coarse 40 grit zirconia alumina flap disc with a 5 in fiberglass backing runs at 12,200 RPM

  • Product typeCarpet Seam Binders
  • Zirconia alumina grain cuts aggressively through metal
  • Coarse 40 grit removes stock quickly on curves
  • Radial flap design follows contours without gouging
  • High density flaps extend disc life under load
  • Rated for 12,200 RPM on angle grinders

Pferd Z SGP CURVE Flap Disc

The Pferd Z SGP CURVE flap disc is a coated abrasive wheel built for aggressive material removal on metal surfaces. Its zirconia alumina grain and coarse 40 grit rating suit weld blending, edge chamfering and heavy stock removal tasks. The radial flap arrangement and high-density construction provide consistent cutting action across the 5 inch diameter. Professional fabricators and maintenance crews will find it matched to high-speed angle grinders.

Check grinder compatibility before ordering

Verify that your angle grinder accepts a 5 inch disc with a 7/8 inch unthreaded centre hole and can run safely at 12,200 RPM maximum operating speed. The unthreaded hole requires the grinder's standard clamping nut and flange set for secure mounting. Confirm the tool's guard is rated for the disc diameter and that the spindle thread matches the supplied hardware. Do not exceed the marked speed limit.

Fiberglass backing and daily use

A fiberglass backing plate gives the disc structural rigidity while remaining a consumable component that wears with the flaps. The unthreaded 7/8 inch centre hole allows quick disc changes using the grinder's existing lock nut, reducing downtime between jobs. High flap density helps maintain a uniform finish as the abrasive wears, and the curved profile improves contact on contoured workpieces. Expect the backing to erode gradually during normal operation.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 60% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand namePferd
Product typeCarpet Seam Binders

Questions about this item

Does the 5 in Z SGP CURVE flap disc ship with a backing pad or must I buy one separately?

The disc has an unthreaded 7/8 in centre hole and a fiberglass backing plate built in; no separate backing pad is required for mounting.

When should I choose the 40 grit Z SGP CURVE over finer grits in the same series?

Select the 40 grit version for aggressive stock removal on steel and stainless steel where a coarse finish is acceptable.

What does the 12,200 RPM maximum speed mean for daily use on my angle grinder?

It is the highest safe spindle speed; run the grinder at or below this figure to avoid disc failure.

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