Internal Spur Gears Manufacturers

An internal spur gear, in combination with a standard spur-gear pinion, provides a compact drive mechanism for tranmitting motion between parallel shafts that rotate in the same direction. The internal gear is a whell that has teeth cut on the inside of its rim and the pinion is housed inside the wheel. The driving and driven members rotate in the same direction at relative speeds inversely propotional to the number of teeth. Gears having their teeth along an inner surface of a hollow cylinder.