Custom Sector Gear

Jack Lie CNC machining expert

Specialize in CNC milling , CNC turning, 3D printing, urethane casting, rapid tooling, injection molding, metal casting,


A Sector gear is a gear that has teeth cut along a section of its circumference only. The remaining portion of the gear has no teeth, so it is smooth.

Sector gears can be applied to applications where less than 360° is required, such as value actuators that only require 90° to open or close. Such configuration may save material, space, and manufacturing costs. Spur, helical, bevel, and/or even worm gears may be used as sector gears. 

Typical applications: the aircraft radar because sector gears can scan forward of the plans, the X-ray machine with dual sector gears.

Runsom is a manufacturer of sector gears in wide kinds of materials including aluminum, steel, stainless steel, etc.

Let Runsom supply you with available solutions to your gear projects! We welcome the challenge!