Gear Boxes
Design Attributes
High-load, lightweight gear box geometries and advanced materials are becoming the industry standard. This drives the need for modern manufacturing and inspection technologies for next-generation aircraft, as well as refurbishment of existing platforms.
To ensure optimal performance, gear box design and construction requires a combination of sound engineering, specialized manufacturing knowledge, and expert craftsmanship.
Good engineering practices emphasize the criticality of bearing hole location and size. Correct alignment supports proper gear tooth mesh and helps prevent binding in the gear train. Designing bearing hole sizes to tight tolerances ensures correct bearing fit for the outer races, while allowing the inner races to rotate freely. Optimized gear design software helps determine appropriate gear contact patterns and can reduce time and cost when developing a new gear box.
Specialized manufacturing knowledge is required to grind, shape, hob, or shave gears for high-performance gear trains. Expert craftsmanship is needed to produce internal gears with exceptional accuracy up to AGMA Class 12 and to assemble complex gear boxes. CEF can deliver custom gear boxes with a variety of input, output, and mounting configurations.
Our Gear Box Products Include:
- Bevel
- Helical
- Spur (parallel axis)
- Worm
- Planetary (spur and helical)
- Shaft-mounted gear units and clusters
- Gear carriers
- Radial drive shafts
- Power shafts and torque tubes
Typical Applications
- Aerospace engine and rotorcraft gear boxes
- Defense equipment and airframe assembly structures
- Accessory gear boxes and transmitting members
- PTO gear boxes
- Ventilation
- Electrical power
- Mechanical actuation
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Need a custom gear box for an aerospace or defense platform? Contact CEF Industries to discuss load requirements, packaging constraints, interfaces, and qualification needs.