STEELOX POLIFAN PFF Flap Disc

STEELOX POLIFAN PFF Flap Disc, Grinding and finishing on steel and stainless steel

The STEELOX POLIFAN PFF flap disc is engineered for demanding tasks on steel and stainless steel. Grinding, deburring, finishing: it handles it all without losing performance.

Its construction of overlapping abrasive flaps ensures consistent material removal and a clean surface, even on complex geometries.

Built to last, the PFERD POLIFAN PFF reduces tool changes and improves productivity both on-site and in the workshop.

What is the PFERD STEELOX POLIFAN PFF flap disc?

The STEELOX POLIFAN PFF flap disc is a rotary abrasive designed by PFERD for grinding and finishing on steel and stainless steel. It combines material removal and surface smoothing into a single tool.

The PFF designation refers to the flat geometry of the disc (Flat Face). The flaps are arranged flat, perpendicular to the axis of rotation. This configuration promotes maximum surface contact with the workpiece.

PSF technology and flat geometry: operating principles

PFERD integrates its PSF (Polymer Special Fiber) technology into this disc. The polymer binder that holds the abrasive grain is more flexible than a traditional binder. The result: the grain remains active longer before becoming clogged.

The grain used is zirconia alumina, a self-sharpening abrasive. With each pass, new sharp edges are exposed. The service life of the disc is significantly longer than a standard corundum flap disc.

The flat geometry (PFF) differs from the conical geometry (PFX or PSF-INOX):

• Wide, uniform contact → homogeneous finish on large flat surfaces
• Reduced working pressure → less risk of marking stainless steel
• Ideal for finishing and light deburring work

The disc can be used at 90° to the surface, which distinguishes it from conical discs that perform better at an angle. It is compatible with standard angle grinders.

Technical specifications of the POLIFAN PFF STEELOX

The POLIFAN PFF STEELOX is a flap disc designed for grinding and finishing on steel and stainless steel. Its flat flap design (PFF type) ensures progressive contact and consistent material removal.

Zirconia grain: performance and longevity

The abrasive used is zirconia grain, recognized for its hardness and natural self-sharpening properties. It remains effective much longer than a standard alumina grain on hard materials.

This grain is particularly suitable for stainless steels and carbon steels. It withstands high contact pressures without dulling prematurely.

Dimensions and operating speeds

The POLIFAN PFF STEELOX is available in common diameters from 115 mm to 180 mm, with a standard 22.23 mm bore. It fits standard angle grinders on the market.

The maximum operating speed is 80 m/s (13,300 rpm for 115 mm), in accordance with EN 13743 standards. Never exceed the speed indicated on the disc.

Product	Abrasive	Type	Target Materials	Main Use
POLIFAN PFF STEELOX	Zirconia	Flat flaps (PFF)	Steel, Stainless Steel	Aggressive grinding + finishing
POLIFAN PSF (Pferd)	Special Alumina	Flat flaps (PSF)	Mild steel	Finishing and light deburring
Cubitron II 967A (3M)	3M precision abrasive	Conical flaps	Stainless steel, titanium	High-performance grinding
POLIFAN SGP ZIRCONIA (Pferd)	Zirconia	Conical flaps (SGP)	Steel, Stainless Steel, Cast iron	Heavy-duty grinding

Applications: on which materials and tasks should you use the POLIFAN PFF STEELOX?

The POLIFAN PFF STEELOX is designed to work on steel, stainless steel, and their alloys. It is a versatile flap disc, tailored for aggressive grinding and finishing operations in a single pass.

Steel, stainless steel, and alloys: compatibility and performance

Its composition is free of iron, sulfur, and chlorine. This is a decisive factor for stainless steel: there is no risk of contamination or corrosion induced by the tool.

On carbon steel, it removes material quickly while leaving a clean surface. On stainless steel, it respects the metal's integrity and is suitable for parts intended to remain visible.

Typical tasks:

• Deburring MIG/TIG welds
• Sanding weld seams
• Stripping oxidized surfaces
• Finishing before surface treatment or painting
• Grinding chamfers and sharp edges

Product	Compatible Materials	Stainless contamination-free	Main Use
POLIFAN PFF STEELOX	Steel, stainless, alloys	✔ Yes	Combined grinding + finishing
Standard POLIFAN PFF	Steel only	✘ Not guaranteed	General steel grinding
Classic zirconia flap disc	Steel, cast iron	✘ No	Intensive material removal
Ceramic flap disc (e.g., Klingspor SMT 624)	Steel, stainless, titanium	✔ Yes	High performance, long life

The STEELOX is the clear choice whenever stainless steel is involved or specifications prohibit any metallic contamination. It is the logical choice for boilermaking, stainless steel piping, and metal construction.

Comparison: POLIFAN PFF STEELOX vs. other flap discs on the market

The Pferd POLIFAN PFF STEELOX stands out for its specific design for steel and stainless steel. Here is how it compares to common alternatives.

Product	Manufacturer	Compatible Materials	Abrasive	Key Strength	Limit
POLIFAN PFF STEELOX	Pferd	Steel, stainless	Zirconia alumina	High material removal + neat finish	Not suitable for aluminum
POLIFAN PFF ALUMINIUM	Pferd	Aluminum, non-ferrous metals	Special Alumina	Prevents clogging on aluminum	Ineffective on hard steel
Standard Flap Disc	Norton / 3M	General steel	Aluminum oxide	Low entry price	Shorter service life
Ceramic flap disc	Klingspor / Mirka	Stainless steel, titanium	Ceramic grain	Very long service life	Higher cost

The zirconia alumina grain of the STEELOX offers a good balance between cutting aggressiveness and longevity, superior to classic aluminum oxide.

Compared to ceramic discs, it remains more accessible while covering the majority of common uses on steel and stainless steel.

Its PFF format (flat) ensures maximum contact surface, ideal for large flat areas, an advantage over conical discs (PSF) for finishing work.

The result: a versatile, durable, and precise disc, particularly suited for grinding and finishing tasks in the workshop or on site.

Usage and safety tips for the POLIFAN PFF flap disc

The STEELOX POLIFAN PFF flap disc is designed for grinding and finishing on steel and stainless steel. A few simple rules will help you achieve the best results while working safely.

Always verify that the maximum permissible speed indicated on the disc is compatible with your machine before mounting the tool. Never exceed this limit.

Always wear your personal protective equipment: safety glasses or face shield, cut-resistant gloves, hearing protection, and a leather apron if necessary.

Work with an attack angle of 15° to 25° to the surface. This angle optimizes material removal and preserves the life of the abrasive flaps.

Let the disc work without forcing it. Excessive pressure heats the workpiece, accelerates wear, and degrades the finish quality.

Compatible machines and recommended settings

The POLIFAN PFF fits standard angle grinders. Here are the key points to check before use:

• Spindle diameter: M14 (most common on portable grinders)
• No-load speed: comply with the maximum speed indicated on the disc (typically 12,200 rpm for Ø 125 mm)
• Safety guard: mandatory, correctly positioned toward the operator
• Rotation direction: check the rotation direction arrow printed on the disc

On stainless steel, prefer light pressure and smooth movement to avoid overheating and the risk of heat-induced corrosion.

After use, store the disc away from moisture and impact. A damaged or cracked disc must be discarded immediately.

FAQ - STEELOX POLIFAN PFF Flap Disc

1. On which materials can the STEELOX POLIFAN PFF flap disc be used?

The STEELOX POLIFAN PFF is designed to work on steel and stainless steel.

Its iron-, sulfur-, and chlorine-free construction makes it compatible with stainless steels without risk of contamination or corrosion.

2. What is the difference between a flat flap disc (PFF) and a conical disc (PFR)?

The flat disc (PFF) offers a wider contact surface. It is ideal for work on flat surfaces and finishing large areas.

The conical disc (PFR) facilitates work at an angle and is better suited for welds and hard-to-reach areas.

3. Which grain should be chosen according to the application?

The grain determines the abrasive's aggressiveness:

• Grain 40-60: rapid material removal, deburring, heavy grinding
• Grain 80-120: intermediate grinding, surface preparation
• Grain 120-180: fine finishing, satin finishing, preparation before surface treatment

4. Is the STEELOX POLIFAN PFF compatible with all angle grinders?

Yes, provided the grinder's maximum speed is compatible with the speed indicated on the disc.

Always verify that the disc diameter matches your grinder's size (115, 125, or 180 mm depending on the model).

5. What is the service life of the STEELOX POLIFAN PFF compared to a standard disc?

Thanks to its POLIFAN design with zirconia corundum or alumina flaps, the STEELOX offers a longer service life than entry-level flap discs.

The self-sharpening of the flaps maintains efficient cutting throughout the life of the disc, which reduces frequent changes.

6. Can this disc be used for stainless steel satin finishing?

Yes. With a fine grain (120 to 180), the STEELOX POLIFAN PFF achieves a consistent satin finish on stainless steel.

This is a common application in boilermaking, professional kitchens, and the food industry.