Miter gears are a type of bevel gear, which means they are gears where the shafts intersect at an angle. However, unlike other bevel gears, miter gears specifically have a 90° angle between their shafts and a 1:1 gear ratio. This means they simply change the direction of rotation without affecting the speed.Here are some key characteristics of miter gears:Conical teeth: Miter gears have teeth that are angled, like wedges, rather than straight like spur gears. This allows them to mesh properly with each other at the intersecting angle.Shaft angle: While 90° is the most common angle for miter gears, they can also be designed for other angles, such as 45° or 60°.Gear ratio: Typically, miter gears have a 1:1 gear ratio, meaning they transfer the same rotational speed from one shaft to the other. However, in rare cases, they can be designed with slightly different numbers of teeth for a slightly different gear ratio.Applications: Miter gears are used in various applications where shafts need to be turned at right angles with the same speed. Some common examples include:Gearboxes: They can be used in gearboxes to change the direction of rotation of a shaft within a larger mechanical system.Machines: They are found in various machines, such as printers, mixers, and conveyor belts, to change the direction of rotation of different components.Clocks: Some clocks use miter gears to transfer the motion from the escapement to the hands.Here are some additional points about miter gears:Straight and spiral teeth: Miter gears can have either straight or spiral teeth. Spiral teeth offer smoother operation and reduced noise compared to straight teeth, but they are more complex to manufacture.Materials: Miter gears can be made from various materials, including steel, plastic, and nylon, depending on the application and required strength.Availability: Miter gears are readily available from many gear manufacturers in various sizes and materials.