A spur wheel is a type of gear that features straight teeth that are designed to mesh with other spur gears. This type of gear is commonly used in various mechanical applications, from machinery to automotive systems. Some synonyms for spur wheels include spur gears, straight-cut gears, pinion gears, and spur pinions. Each of these terms refers to the same basic type of gear, but may be used in slightly different contexts depending on the specific application. For example, a spur pinion may be used to refer specifically to a small spur gear that meshes with a larger wheel, while straight-cut gears may refer to spur gears that are cut using specific manufacturing techniques.