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  2. Grinding wheel - Wikipedia

    en.wikipedia.org/wiki/Grinding_wheel

    Grinding wheels are wheels that contain abrasive compounds for grinding and ... grain size of grinding wheels are 10-24 (coarse), 30-60 (medium), 80-200 (fine), and ...

  3. Concrete grinder - Wikipedia

    en.wikipedia.org/wiki/Concrete_grinder

    All concrete grinders use abrasives to grind or polish such as diamond tools or silicon carbide.The diamond tools used for grinding most commonly are diamond grinding cup wheels, other machines may use diamond segments, mounted on varies plates, slide on diamond grinding shoes and for polishing are usually circular Resin diamond polishing pads.

  4. Nominal Pipe Size - Wikipedia

    en.wikipedia.org/wiki/Nominal_Pipe_Size

    Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...

  5. Concrete pump - Wikipedia

    en.wikipedia.org/wiki/Concrete_pump

    This pump requires steel or flexible concrete placing hoses to be manually attached to the outlet of the machine and feed the concrete to the place of application. The length of the hoses varies, typical hose lengths are 3.0, 3.8, 7.6, and 15.2 metres (10, 12.5, 25, and 50 ft), depending on the diameter.

  6. Centerless grinding - Wikipedia

    en.wikipedia.org/wiki/Centerless_grinding

    A schematic diagram of the centerless grinding process. Centerless grinding is a machining process that uses abrasive cutting to remove material from a workpiece. [1] Centerless grinding differs from centered grinding operations in that no spindle or fixture is used to locate and secure the workpiece; [2] the workpiece is secured between two rotary grinding wheels, and the speed of their ...

  7. Grinding (abrasive cutting) - Wikipedia

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

    The tolerances that are normally achieved with surface grinding are ±2 × 10 −4 inches (5.1 μm) for grinding a flat material and ±3 × 10 −4 inches (7.6 μm) for a parallel surface. [ 4 ] The surface grinder is composed of an abrasive wheel, a workholding device known as a chuck , either electromagnetic or vacuum, and a reciprocating table.

  8. Lapping - Wikipedia

    en.wikipedia.org/wiki/Lapping

    The lap or lapping plate in this machine is 30 cm (12 in) in diameter, about the smallest size available commercially. At the other end of the size spectrum, machines with 2.4-to-3.0-metre-diameter (8 to 10 ft) plates are not uncommon, and systems with tables 9 m (30 ft) in diameter have been constructed.

  9. Bench grinder - Wikipedia

    en.wikipedia.org/wiki/Bench_grinder

    Grinding is prohibited on the side of a typical (disk-shaped) bench grinder wheel, which is designed for grinding on the periphery only. Grinding on the side of a wheel can cause the wheel to explode. Some tool and cutter grinders have cup-shaped wheels designed to do grinding on the side.

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