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2. Belt (mechanical) - Wikipedia

   en.wikipedia.org/wiki/Belt_(mechanical)

   It is midway through the surfaces in film and flat belts and dependent on cross-sectional shape and size in timing and V-belts. Standard reference pitch diameter can be estimated by taking average of gear teeth tips diameter and gear teeth base diameter. The angular speed is inversely proportional to size, so the larger the one wheel, the less ...

3. List of gear nomenclature - Wikipedia

   en.wikipedia.org/wiki/List_of_gear_nomenclature

   Equivalent pitch radius is the radius of the pitch circle in a cross section of gear teeth in any plane other than a plane of rotation. It is properly the radius of curvature of the pitch surface in the given cross section. Examples of such sections are the transverse section of bevel gear teeth and the normal section of helical teeth.

4. List of screw drives - Wikipedia

   en.wikipedia.org/wiki/List_of_screw_drives

   Slot screw drives have a single horizontal indentation (the slot) in the fastener head and is driven by a "common blade" or flat-bladed screwdriver.This form was the first type of screw drive to be developed, and, for centuries, it was the simplest and cheapest to make because it can just be sawed or filed.

5. Cross belt sorter - Wikipedia

   en.wikipedia.org/wiki/Cross_belt_sorter

   The cross-belt sorter operates in several stages: Induction: Items are fed typically at an angle of 30˚ or 45˚ onto the moving sorter through a series of conveyors that accelerate the item to the sorter speed. The cross-belt then activates and the item is inducted to the sorter cell at null relative speed.

6. Timing belt (camshaft) - Wikipedia

   en.wikipedia.org/wiki/Timing_belt_(camshaft)

   Manufacturer-specification timing belts may stretch at high rpm, [citation needed] retarding the cam and therefore the ignition. [12] Stronger aftermarket belts will not stretch and the timing is preserved. [13] When designing the timing belt, a wider belt increases its strength however a narrower belt reduces weight and friction. [14]

7. Toothed belt - Wikipedia

   en.wikipedia.org/wiki/Toothed_belt

   Supercharger drive belt in a dragster. A toothed belt, timing belt, cogged belt, cog belt, or synchronous belt is a flexible belt with teeth moulded onto its inner surface. Toothed belts are usually designed to run over matching toothed pulleys or sprockets. Toothed belts are used in a wide array of mechanical devices where high power ...