Overview. Boston Gear pinion wire is a type of spur gear with a face width of 4 feet, no hub, and no bore. The gear teeth are drawn (formed not generated) over the full length of the pinion wire. Most ...

Gears can change the direction or the speed of movement. As there are teeth around the edge of the gears they grip together and so can withstand a greater force, enabling them to move large items ...

They combine the rolling action and high tooth pressure of spiral bevels with the sliding action of worm gears. This gear type is generally found within the differential of automobiles Internal gears ...