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Spur gears or straight-cut gears are the simplest types of gear. They consist of a cylinder or disk with teeth projecting radially. Though the teeth are not straight-sided (but usually of special form to achieve a constant drive ratio, mainly involute but less commonly cycloidal), the edge of each tooth is straight and aligned parallel to the axis of rotation.

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Bottle Crusher is used to crush a plastic bottle with variable sizes like 2 liters, 1 liter, and 500 milliliters. It is available at a very cheap cost for an order contact me at Techdesignhut@gmail.com.

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Tech Design Hut

Hydraulic pumps are used in hydraulic drive systems and can be hydrostatic or hydrodynamic. A hydraulic pump is a mechanical source of power that converts mechanical power into hydraulic energy (hydrostatic energy i.e. flow, pressure). It generates flow with enough power to overcome pressure induced by the load at the pump outlet. When a hydraulic pump operates, it creates a vacuum at the pump inlet, which forces liquid from the reservoir into the inlet line to the pump, and by mechanical action delivers this liquid to the pump outlet and forces it into the hydraulic system.