Spur gear have straight teeth and are the most common type of gear. They are used to transmit motion between two parallel shafts and are known for being highly efficient and producing a lot of power.
Spur gears are available in a variety of materials, including steel, nylon, bronze, and cast iron. A given spur gear's composition and configuration will vary based on its intended use. Spur gears in a hand-held power tool, for example, will need to combine qualities of durability with low weight in order to make the tool effective as well as easy to handle. In large scale milling operations, spur gears are chosen for their qualities of strength, durability and other features that ensure long-term, efficient operation. Depending on the context, noise control may not be a necessary consideration in choosing a spur gear.
