Internal Gears feature teeth pointing towards the center with addendum and dedendum taking reverse positions. These gears are also designed to provide compact as well as parallel shaft transmission drive with option of greater speed reduction as desired by the operators. These can be used with stock spur pinion also eliminate use of idler gear where two parallel shafts need to be rotated in same direction.

With cylindrical pith surface, these gears come with teeth that are parallel to axis cut from inside rim and are used along with pinion to efficiently carry the load as well as ensure even distribution. Making use of transmitted rotary motion between parallel shafts rotating in same direction, the superior non-binding tooth design provides for smooth as well as noiseless operations. Further, these gears also provide for low sliding as well as high stress loading operations.