An planetary gearbox Internal Gear may be described as the opposite of an external gear in that the teeth point towards rather than away from the guts, and addendum and dedendum take invert positions. Internal Gears give a compact parallel shaft tranny drive with large swiftness reduction. Used with a standard spur pinion the ratio is the same as that of two exterior gears, however the center distance is much smaller. Where it’s important to possess two parallel shafts rotate in the same path, the inner gear eliminates the use of an idler gear.

Internal Gears possess a number of advantages when properly used. One such advantage is reduced sliding actions. The corresponding working surfaces of one’s teeth of an internal gear and pinion are more nearly of the same size than may be the case with an external gear and pinion getting the same tooth ratio and tooth size. Which means relative slippage of one’s teeth is less regarding the internal. This aspect presents one of the benefits of using Internal Gears. The sliding actions of 1 tooth over another causes friction; and since friction results in tooth wear, a reduction in the quantity of sliding action is certainly desirable.

Internal Gear drives could 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 set position.

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

RUSH GEARS inc. provides standard Internal Gears in STEEL, STAINLESS, CAST IRON, BRONZE, Aluminium, DELRIN and nonmetallic (PHENOLIC). We will gladly manufacture made to purchase Internal Gears to your requirements.