An Internal Gear could be described as the contrary of an external gear in that the teeth point towards rather than away from the center, and addendum and dedendum consider invert positions. Internal Gears provide a compact parallel shaft transmission drive with large speed reduction. Used with a typical spur pinion the ratio is the same as that of two exterior gears, however the center distance is much smaller. In cases where it’s important to possess two parallel shafts rotate in the same direction, the inner gear eliminates the use of an idler gear.
Internal Gears possess many advantages when properly applied. One such benefit is reduced planetary gearbox sliding actions. The corresponding working surfaces of the teeth of an internal equipment and pinion are more nearly of the same length than may be the case with an external gear and pinion having the same tooth ratio and tooth length. Therefore the relative slippage of one’s teeth is less regarding the internal. This point presents among the benefits of using Internal Gears. The sliding action of 1 tooth over another causes friction; and as friction outcomes in tooth wear, a reduction in the amount of sliding action is 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 proportions to the apparatus, interference may result. For that reason, the difference in teeth of the pinion to the gear should not be significantly less than 15.
RUSH GEARS inc. provides regular Internal Gears in STEEL, STAINLESS, CAST IRON, BRONZE, Aluminium, DELRIN and nonmetallic (PHENOLIC). We will gladly manufacture made to order Internal Gears to meet your needs.