An Internal Gear may be described as the opposite of an external gear in that one’s teeth point towards instead of away from the guts, and addendum and dedendum take reverse positions. Internal Gears give a small parallel shaft transmission drive with large swiftness reduction. Used with a standard spur pinion the ratio is equivalent to that of two exterior gears, but the center distance is a lot smaller. Where it is necessary to possess two parallel shafts rotate in the same direction, the internal gear eliminates the use of an idler gear.

Internal Gears possess many advantages when properly applied. One such advantage is reduced sliding action. The corresponding working areas of one’s teeth of an internal gear and pinion are more almost of the same length than is the case with an exterior gear and pinion having the same tooth ratio and tooth size. Which means relative slippage of the teeth is less in the case of the internal. This aspect presents among the advantages of using Internal Gears. The sliding actions of one tooth over another causes friction; and as friction outcomes in tooth wear, a reduction in the amount of sliding action is definitely desirable.

Internal Gear drives may be operated with the apparatus in a fixed position and the pinion rotating along the pitch line, or the gear may be absolve to rotate with the pinion rotating in a fixed position.

When mating pinions are as well close in size to the apparatus, interference may result. As a result, the difference in teeth of the pinion to the apparatus should not be less than 15.

RUSH GEARS inc. provides regular Internal Gears in STEEL, STAINLESS STEEL, CAST IRON, BRONZE, Light weight aluminum, DELRIN and NON-METALLIC (planetary gearbox PHENOLIC). We will gladly produce made to order Internal Gears to your requirements.