Cargo wheels and traction rollers are used in aircraft power drive assist units for both commercial passenger flights and global air freight carriers. These rollers are essential for efficiently moving cargo, including packages, livestock, and other heavy-weight freight items through the aircraft.
Due to the various items being transported, the rollers would encounter materials such as cleaning agents, fuels, and other chemicals, and exposure to animal waste from livestock, like urine and feces, without losing their grip or bonding capabilities. In addition to heavy loads, the rollers had to withstand extreme temperatures and weather conditions.
The wheel and traction rollers' geometry and materials of construction, such as aluminum wheels and overmolded elastomers, had to be carefully engineered and for compatibility with a wide range of fluids and debris. Complex analysis of materials of construction, adhesion, bonding, and expert manufacturing controls was paramount to success.