Internal Spur Gear with compact internal meshing structure for enhanced power transmission

1) Descriptions of Internal Spur Gear

From the perspective of compact space transmission, an internal gear is a type of gear whose teeth are distributed along the inner surface of a ring-shaped component. Typically used in conjunction with external gears (such as pinions or planetary gears), it enables power transmission and speed conversion within limited spatial constraints.

2) Features of Internal Spur Gear

Characterised by an ‘internal meshing’ transmission structure, where the outer gear is nested within the inner gear, resulting in a compact overall footprint; Advantages include a reduced centre distance, significantly diminishing the volume of the equipment's transmission system. Furthermore, the direction of tooth surface contact during internal meshing is more optimal, resulting in superior transmission smoothness compared to externally meshed gears of the same specification. Operational noise levels are notably lower (typically 5-10dB quieter than externally meshed gears).

3) Applications of Internal Spur Gear

Suitable for applications with stringent volume constraints, such as planetary gear mechanisms in automotive automatic transmissions (where the inner gear serves as the ring gear), compact reducers (e.g., robotic joint reducers), power tool drive systems, medical devices (e.g., wheelchair drive mechanisms), and micro-transmission modules within precision instruments.

YIZHI MACHINERY which is equipped with a full range of machining capabilities to satisfy customer needs.

Our team has extensive experience in precision gearing systems for numerous industries. We have supplied gears for mining equipment, power tools, hydraulic pumps and the rail transit industry.

The feature products are double helical gear and precision spiral bevel gear, equipped with Hofler Rapid and helix grinding machines, Niles ZE and ZP grinding machines and Gleason Phoenix bevel gear grinding machines. This capability allows us to provide quality customs made gears to domestic and overseas markets.