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PFERD has introduced the POLIFAN PSF Z-TRIM flap disc. These versatile new universal flap discs have a light-weight composite backing that can be trimmed to extend service life and reduce time consuming disc changes. The composite backer and flap arrangement help reduce vibration and noise levels. Produced with a higher density of zirconia-coated material (Zirconia alumina Z) than standard PSF flap discs, these discs provide long service life, an improved surface finish, and a soft, cushioned, contamination-free grinding effect in applications ranging from surface grinding, weld grinding, blending, chamfering, and deburring on steel and stainless steel (INOX).
Their zirconia self-sharpening abrasive grain produces high stock-removal rates throughout the life of the disc, along with a long service life. In addition, the high-density flap arrangement, with an increased amount of coated material vs. conventional flap arrangement, facilitates reduced vibration and noise levels, along with flexible grinding action and superior results on irregular shapes.
POLIFAN PSF Z-TRIM flap discs perform on all power outputs, though high-powered angle grinders will achieve optimal results. They are available in 4 ½ in. and 5 in. diameter with either a 7/8 in. plain arbor hole, or a 5/8-11 thread for threaded spindles, in grit sizes of 40, 60, and 80. The 5/8-11 thread quick-change version is made with a zinc hub.
Related Glossary Terms
- abrasive
abrasive
Substance used for grinding, honing, lapping, superfinishing and polishing. Examples include garnet, emery, corundum, silicon carbide, cubic boron nitride and diamond in various grit sizes.
- arbor
arbor
Shaft used for rotary support in machining applications. In grinding, the spindle for mounting the wheel; in milling and other cutting operations, the shaft for mounting the cutter.
- backing
backing
1. Flexible portion of a bandsaw blade. 2. Support material behind the cutting edge of a tool. 3. Base material for coated abrasives.
- chamfering
chamfering
Machining a bevel on a workpiece or tool; improves a tool’s entrance into the cut.
- grinding
grinding
Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.
- surface grinding
surface grinding
Machining of a flat, angled or contoured surface by passing a workpiece beneath a grinding wheel in a plane parallel to the grinding wheel spindle. See grinding.
