Nano Surface Modification of Hub Bearing Race Ways for Increasing the Dynamic Load Rating and Decreasing the Friction Loss

2007-01-3735

08/05/2007

Event
Asia Pacific Automotive Engineering Conference
Authors Abstract
Content
UNSM technology increases surface hardness, induces a large amount of compressive residual stress in the subsurface, refines the grain size into 50∼200 nm, and modifies the surface into micro dimple structure which reduces the friction coefficient about 50% simultaneously. In order to show the possibility of weight and friction reduction at Hub bearing application, hardness, roughness, residual stress, surface topology, friction coefficient and wear rate are compared before and after UNSM treatment of test specimens. Two type of rolling contact fatigue test and pin-on-disc test are carried out for test specimens. Finally dynamo test of hub bearing assembly is being carried out. Test results show that UNSM technology can reduce the weight and friction loss of hub bearing and is very effective technology for fuel consumption and CO2 emissions of vehicle.
Meta TagsDetails
DOI
https://doi.org/10.4271/2007-01-3735
Pages
8
Citation
Cho, I., Kim, C., Jin, S., Moon, J. et al., "Nano Surface Modification of Hub Bearing Race Ways for Increasing the Dynamic Load Rating and Decreasing the Friction Loss," SAE Technical Paper 2007-01-3735, 2007, https://doi.org/10.4271/2007-01-3735.
Additional Details
Publisher
Published
Aug 5, 2007
Product Code
2007-01-3735
Content Type
Technical Paper
Language
English