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2. Flapwheel - Wikipedia

   en.wikipedia.org/wiki/Flapwheel

   Early radial flapwheel, for use with an electric drill. A flapwheel and the related flap disk is an abrasive disk, used for metal finishing. Unlike the simpler flat disks, made from a circular flat sheet of a coated abrasive, a flapwheel is made of multiple overlapping small pieces or 'flaps', bonded to a central hub.

3. Grinding wheel - Wikipedia

   en.wikipedia.org/wiki/Grinding_wheel

   The wheel type (e.g. cup or plain wheel below) fit freely on their supporting arbors, the necessary clamping force to transfer the rotary motion being applied to the wheels side by identically sized flanges (metal discs). The paper blotter shown in the images is intended to distribute this clamping force evenly across the wheels surface.

4. Norton Abrasives - Wikipedia

   en.wikipedia.org/wiki/Norton_Abrasives

   Norton Company was founded in 1885 by a group of ceramists and entrepreneurs from Worcester, Massachusetts. The group set out to manufacture the first mass-produced, precision-made grinding wheel to fulfill the burgeoning U.S. manufacturing industry's growing need for abrasives. [1] In 1990 it was purchased by Saint-Gobain of France.

5. Surface grinding - Wikipedia

   en.wikipedia.org/wiki/Surface_grinding

   The components of a surface grinding machine are an abrasive wheel, a workholding device known as a chuck, and a reciprocating or rotary table. The chuck holds the material in place by two processes: ferromagnetic pieces are held in place by a magnetic chuck, while non-ferromagnetic and nonmetallic pieces are held in place with vacuum or ...

6. Grinding (abrasive cutting) - Wikipedia

   en.wikipedia.org/wiki/Grinding_(abrasive_cutting)

   A cylindrical grinder has a grinding (abrasive) wheel, two centers that hold the workpiece, and a chuck, grinding dog, or other mechanism to drive the work. Most cylindrical grinding machines include a swivel to allow the forming of tapered pieces. The wheel and workpiece move parallel to one another in both the radial and longitudinal directions.

7. Semi-trailer aerodynamic device - Wikipedia

   en.wikipedia.org/wiki/Semi-trailer_aerodynamic...

   Semi-trailer aerodynamic devices are devices affixed to semi-trailers, for the purpose of reducing aerodynamic drag caused by air turbulence.The two major types of device in use are trailer skirts (or side skirts), affixed to the underside of trailers, and trailer tails (or boat tails, or rear fairings), affixed to the rear.