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2. Spacers and standoffs - Wikipedia

   en.wikipedia.org/wiki/Spacers_and_standoffs

   In general, a spacer is a solid material used to separate two parts in an assembly. Spacers can vary in size from microns to centimeters. They can be made of metal, plastic, glass, and other materials. Shapes include flat sheet, cylindrical and spherical. Two sizes of metal standoffs and one plastic standoff.

3. Washer (hardware) - Wikipedia

   en.wikipedia.org/wiki/Washer_(hardware)

   Often made of nylon, these are also made of teflon, PEEK or other plastics to withstand higher temperatures. Keyed washer A washer with a key to prevent rotation, and is used to lock two nuts in place, without allowing the torque applied to the top nut to cause the bottom nut to also rotate (such as in a threaded headset on a bicycle ).

4. Nylon - Wikipedia

   en.wikipedia.org/wiki/Nylon

   Type 6,6 Nylon 101 is the most common commercial grade of nylon, and Nylon 6 is the most common commercial grade of molded nylon. [ 94 ] [ 95 ] For use in tools such as spudgers , nylon is available in glass-filled variants which increase structural and impact strength and rigidity, and molybdenum disulfide -filled variants which increase ...

5. Balance shaft - Wikipedia

   en.wikipedia.org/wiki/Balance_shaft

   Balance shafts are used in piston engines to reduce vibration by cancelling out unbalanced dynamic forces. The counter balance shafts have eccentric weights and rotate in the opposite direction to each other, which generates a net vertical force. The balance shaft was invented and patented by British engineer Frederick W. Lanchester in 1907.

6. AOL.com - News, Sports, Weather, Entertainment, Local & Lifestyle

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   AOL latest headlines, entertainment, sports, articles for business, health and world news.

7. Coupling - Wikipedia

   en.wikipedia.org/wiki/Coupling

   A beam coupling, also known as helical coupling, is a flexible coupling for transmitting torque between two shafts while allowing for angular misalignment, parallel offset and even axial motion, of one shaft relative to the other. This design utilizes a single piece of material and becomes flexible by removal of material along a spiral path ...

8. Rebar spacer - Wikipedia

   en.wikipedia.org/wiki/Rebar_spacer

   A concrete spacer with a plastic clip in use Concrete spacers in a precast element Diaphragm wall block on rebar for a Diaphragm wall. A rebar spacer is a short, rod-like device used to secure reinforcing steel bars, or rebar, within cast assemblies for reinforced concrete structures. The rebar spacers are fixed before the concrete is poured ...

9. Shaft (mechanical engineering) - Wikipedia

   en.wikipedia.org/wiki/Shaft_(mechanical_engineering)

   The following stresses are induced in the shafts. Shear stresses due to the transmission of torque (due to torsional load). Bending stresses (tensile or compressive) due to the forces acting upon the machine elements like gears and pulleys as well as the self weight of the shaft. Stresses due to combined torsional and bending loads.