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A Prevailing Torque Nut with Incorporated Washer: A Solution for Rear and Front Axle Fastening
ISSN: 0148-7191, e-ISSN: 2688-3627
Published October 02, 2012 by SAE International in United States
Annotation ability available
Wheel hubs typically are set in vehicles through nuts with self-locking feature to assure safety. That feature may be done by an external component like a cotter pin, a deformable element incorporated to the nut like polyamide or metallic insert or some controlled mechanical deformation applied right on nut body.
Nuts with some self-locking elements are being used in order to eliminate cotter pins from the system. However, during the maintenance of vehicles, some disadvantages appear like damage in thread axle due disassembling, considering controlled mechanical deformation nuts or the replacement of nut with polyamide insert to assure self-lock featuring.
This paper presents a solution to replace a fastening in a current front and rear wheel-hub for a passenger vehicle. The study is made comparing a current solution, a controlled mechanical deformed nut - stover type - from a polyamide insert nut and an innovative prevailing torque nut with incorporated washer.
The solution presents a fastener that does not require any element or post process to get a self-locking feature and allows its reutilization. The incorporated washer provides system maintenance cost reduction, has the advantage to be reused without axle's thread damage disassembling and is error proof during assembling against a missing washer in the system.
|Technical Paper||Investigation of a Plastic Component Interface Design & Assembly|
|Ground Vehicle Standard||Road Vehicles - Wheels for Commercial Vehicles and Multipurpose Passenger Vehicles - Fixing Nuts - Test Methods|
|Ground Vehicle Standard||Disc Wheel and Hub or Drum Interface Dimensions - Truck and Bus|
Citationde Faria, J., de Souza, M., Sigoli, P., and Savoy, J., "A Prevailing Torque Nut with Incorporated Washer: A Solution for Rear and Front Axle Fastening," SAE Technical Paper 2012-36-0288, 2012, https://doi.org/10.4271/2012-36-0288.
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