An internal gear is a gear with teeth formed on the inside of a cylinder or cone.
An internal gear is a gear with teeth formed on the inside of a cylinder or cone. It is commonly used in planetary gear mechanisms. A regular gear is an external gear. The counterpart that meshes with an internal gear is always an external gear. Internal gears do not mesh with each other. Furthermore, the internal gear is always the larger gear, while the meshing external gear is always the smaller gear. The smaller gear is referred to as a pinion. For more details, please contact us.
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【Features】 ○ Gears with teeth formed on the inside of a cylinder or cone ○ Commonly used in planetary gear mechanisms ○ The meshing counterpart is always an external gear, and they do not mesh with each other internally ○ The internal gear is always the large gear, while the meshing external gear is always the small gear ○ We promise high precision products for each individual item ● For more details, please contact us.
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The current chairman (founder) has been involved with gears and started this work nearly 50 years ago. At that time, Japan was on the verge of beginning its period of rapid economic growth. The Tōkaidō Shinkansen and the Tokyo Monorail were inaugurated, and not just gears, but all domestic industries began to experience upward growth. From that day until today, the current chairman has consistently focused on the manufacturing of gears. Over these 50 years, the times have changed significantly. The technology for gear manufacturing and the machinery used for production have continued to evolve. The things around us will continue to change rapidly. However, we at Shinkō Gears will carry on the current chairman's vision and enhance corporate value through gears, regardless of the era.
![[Example] Internal Gear: Titanium Thin-Walled Helical Gear](https://image.mono.ipros.com/public/product/image/e38/2000728875/IPROS86303914304457601376.png?w=280&h=280)
![[Example] Internal Gear: Internal gear of a planetary gear mechanism.](https://image.mono.ipros.com/public/product/image/ef8/2000728889/IPROS78273674370899441963.png?w=280&h=280)
![KANA GUIDE 2026 Gear [Trial Introduction Campaign]](https://image.mono.ipros.com/public/product/image/2126698/IPROS3011130116036260894.png?w=280&h=280)