Gears serve as essential mechanisms in a wide range of mechanical equipment, helping to transmit torque, adjust rotational speeds, transfer power, distribute load and more. Used in necessary applications such as automobiles, energy systems, aerospace and industrial equipment, gears must be able to operate for long periods without maintenance. While gears can be made from a diverse assortment of materials, carbon and alloy steel offer superior benefits in terms of strength, durability and cost efficiency. As a remarkably recyclable material, steel may also be a preferable choice for environmentally conscious manufacturers.

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Standardized methods, like AGMA 2001-D04 or ISO 6336 for the calculation of the load carrying capacities of gears are intentionally conservative to ensure broad applicability in industrial practice. However, new applications and higher requirements often demand more detailed design calculations nowadays; for example: long operating lives in wind power gearboxes or fewer gear stages and higher speeds in e-mobility applications result in higher load cycles per tooth in a gearbox.