Internal Gears used in mechanisms such as planetary gear drive
Also, although it is generally too expensive to make helical teeth internal gears, KHK has made it possible to produce them by adopting equipment that can cut them by simply making pinion cutters and not needing helical guides.
Normally, internal gears can be used with the same module spur gears, depending on the number of teeth combinations, but it is necessary to note the possibilities of getting involute, trochoid or trimming interferences. For using KHK’s standard stock gears, please consult the PDF formatted “Technical Information of Internal Gears” section for usable number of teeth combinations.
Internal gears are often used in applications involving planetary gear drives and gear couplings. There are three major types of planetary gear mechanisms: planetary, solar and star types. Depending on the type and the pattern of which shafts act as input and output, many variations of speed transmission ratios and rotational directions are produced.
For more information or enquiries, please do not hesitate to contact your local ELESA+GANTER distributor or visit https://khkgears.net