Helical gear

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A screw-shaped gear, also known as a helical gear, is designed for use in applications where quiet operation and smooth transmission of power are required. Unlike spur gears, which have straight teeth that mesh directly with one another, helical gears have interlocking teeth that are angled relative to the gear's centerline. This design feature reduces noise and vibration, making it an ideal choice for use in machinery where quiet operation is important.